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You searched for: Journal name Colloids and surfaces Remove constraint Journal name: Colloids and surfaces Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019
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1. 1D/2D MnWO4 nanorods anchored on g-C3N4 nanosheets for enhanced photocatalytic degradation ofloxacin under visible light irradiation

Author:
Lakshmi Prabavathi S.; Saravanakumar K.; Gcina Mamba; Muthuraj V.
Source:
Colloids and surfaces 2019 v.581 pp. 123845
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; carbon nitride; carbonates; catalysts; chemical composition; chlorides; energy-dispersive X-ray analysis; hot water treatment; irradiation; light; nanocomposites; nanorods; nanosheets; ofloxacin; optical properties; photocatalysis; pollutants; pollution control; scanning electron microscopy; sulfates; transmission electron microscopy; ultrasonic treatment
Abstract:
... Herein, MnWO₄ nanorods coupled with g-C₃N₄ nanosheets were fabricated by a simple hydrothermal method, followed by an ultrasonication method. Morphological features, chemical composition, optical properties and crystallographic information of the prepared materials were obtained using SEM-EDX, TEM, XRD, XPS, FT-IR, UV–vis DRS, and PL techniques. The synthesized MnWO₄@g-C₃N₄ nanocomposite displayed ...
DOI:
10.1016/j.colsurfa.2019.123845

2. 3,3′-Diindolylmethane nanoencapsulation improves its antinociceptive action: Physicochemical and behavioral studies

Author:
Juliane Mattiazzi; Marcel Henrique Marcondes Sari; Taíne de Bastos Brum; Paulo César Oliveira Araújo; Jéssica Mendes Nadal; Paulo Vítor Farago; Cristina Wayne Nogueira; Letícia Cruz
Source:
Colloids and surfaces 2019 v.181 pp. 295-304
ISSN:
0927-7765
Subject:
Primula; X-ray diffraction; adjuvants; adults; analgesic effect; animal models; differential scanning calorimetry; dose response; encapsulation; hot plate test; inflammation; infrared spectroscopy; males; mice; nanocapsules; nociception; oils; pain; scanning electron microscopy; therapeutics; thermal stability; thermogravimetry
Abstract:
... This study aimed to characterize the physicochemical properties of 3,3′-diindolylmethane (DIM)-loaded nanocapsules (NCs) as well as the antinociceptive effect using distinct animal models (hot plate test, formalin-induced nociception and complete Freud’s adjuvant induced paw inflammation). The DIM-loaded NCs (composed by primula oil and ethylcellulose) were characterized using differential scannin ...
DOI:
10.1016/j.colsurfb.2019.05.063

3. 3D bioprinting and in vitro study of bilayered membranous construct with human cells-laden alginate/gelatin composite hydrogels

Author:
Pengchao Liu; Hongzhou Shen; Yin Zhi; Jiawen Si; Jun Shi; Lihe Guo; Steve Guofang Shen
Source:
Colloids and surfaces 2019 v.181 pp. 1026-1034
ISSN:
0927-7765
Subject:
alginates; biomimetics; bioprinting; calcium chloride; cell viability; crosslinking; ears; encapsulation; epithelial cells; gelatin; humans; hydrogels; hydrogen; in vitro studies; loss modulus; medicine; mesenchymal stromal cells; nose; phenotype; storage modulus; temperature; tissue engineering
Abstract:
... Extrusion-based 3D bioprinting of cell-laden hydrogels is a potential technology for regenerative medicine, which enables the fabrication of constructs with spatially defined cell distribution. However, the limited assessment of rheological behaviors of hydrogel before printing is still a major issue for the advancement of 3D bioprinting. In this work, we systematically investigated the rheologica ...
DOI:
10.1016/j.colsurfb.2019.06.069

4. A 3D network structured reduced graphene oxide/PtRu alloyed composite catalyst in-situ assembled via particle-constructing method

Author:
Yucheng Ji; Min Hou; Yan Zheng; Wanyi Chen; Zhaoqun Wang
Source:
Colloids and surfaces 2019 v.561 pp. 292-300
ISSN:
0927-7757
Subject:
catalysts; catalytic activity; colloids; electrons; graphene; graphene oxide; methanol; microparticles; nanosheets; oxidation; polystyrenes; thermodynamics
Abstract:
... Polystyrene (PS) microspheres are wrapped by reduced graphene oxide (rGO) nanosheets based on the thermodynamically driven heterocoagulation method, and in order to acquire PS/rGO@PtRuNPs composite particles, the resultant PS/rGO composite particles should be used as matrix to deposit Pt-Ru alloyed nanoparticles (PtRuNPs), taking unique advantages of both alloying effect and the 3D structure. A di ...
DOI:
10.1016/j.colsurfa.2018.10.056

5. AMOT130/YAP pathway in topography-induced BMSC osteoblastic differentiation

Author:
Xuan Liu; Wenqing Hou; Lei He; Fangping Han; Mengjie Lu; Xiaobo Lu; Ke Duan; Tailin Guo; Jie Weng
Source:
Colloids and surfaces 2019 v.182 pp. 110332
ISSN:
0927-7765
Subject:
actin; biocompatible materials; bone marrow; cell differentiation; gene expression; nanotubes; osteoblasts; physiological transport; rats; stems; titanium; titanium dioxide; translation (genetics)
Abstract:
... Micro/nano-topography (MNT) is an important variable affecting osseointegration of bone biomaterials, but the underlying mechanisms are not fully understood. We probed the role of a AMOT130/YAP pathway in osteoblastic differentiation of bone marrow mesenchymal stems cultured on titanium (Ti) carrying MNTs. Ti surfaces with two well-defined MNTs (TiO2 nanotubes of different diameters and wall thick ...
DOI:
10.1016/j.colsurfb.2019.06.061

6. ATR-FTIR spectroscopy and thermogravimetry characterization of water in polyelectrolyte-surfactant hydrogels

Author:
Vojtěch Enev; Petr Sedláček; Sabína Jarábková; Tomáš Velcer; Miloslav Pekař
Source:
Colloids and surfaces 2019 v.575 pp. 1-9
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; anionic surfactants; dextran; drying; evaporation; hydrogels; hydrogen; models; thermogravimetry
Abstract:
... Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and thermogravimetric analysis (TGA) were evaluated as useful techniques to study bulk and hydration water in hydrogels. Hydrogels formed by cationized dextran (DEAE-dextran) and anionic surfactants were used as model materials. The IR technique was applied both on fresh samples and on dehydrating samples during the eva ...
DOI:
10.1016/j.colsurfa.2019.04.089

7. Accelerated endothelialization and suppressed thrombus formation of acellular vascular grafts by modifying with neointima-inducing peptide: A time-dependent analysis of graft patency in rat-abdominal transplantation model

Author:
Atsushi Mahara; Takahiro Sakuma; Naoto Mihashi; Toshiyuki Moritan; Tetsuji Yamaoka
Source:
Colloids and surfaces 2019 v.181 pp. 806-813
ISSN:
0927-7765
Subject:
aorta; endothelial cells; in vitro studies; integrins; ligands; miniature swine; models; peptides; rats; thrombosis
Abstract:
... Acellular blood vessels have clinical potential as tissue-engineered vascular grafts. However, neointima is hard to form on their luminal surface. We recently reported the integrin α4β1 ligand peptide (Arg-Glu-Asp-Val) conjugated with a repetitive Pro-Hyp-Gly sequence as luminal surface modifier. By using this peptide, excellent patency of tissue-engineered small-caliber long-bypass grafts in mini ...
DOI:
10.1016/j.colsurfb.2019.06.037

8. Acceleration of tungsten doping on vanadium dioxide (VO2) by alkali species

Author:
Chika Takai-Yamashita; Masafumi Ando; Hadi Razavi-Khosroshahi; Masayoshi Fuji
Source:
Colloids and surfaces 2019 v.567 pp. 1-6
ISSN:
0927-7757
Subject:
X-ray diffraction; ammonia; colloids; phase transition; semiconductors; sodium hydroxide; temperature; tungsten; vanadium
Abstract:
... The monoclinic vanadium dioxide, VO2(M), undergoes reversible phase transition from monoclinic (semiconductor) to tetragonal (metal), which exhibits a good thermochromic property. VOSO4, as a vanadium source, is easy to handle produces VO2(M) under mild condition in the presence of alkali species. In this study, the effects of the additions of NH4HCO3, NH3·H2O, and NaOH on the VO2 crystal formatio ...
DOI:
10.1016/j.colsurfa.2019.01.022

9. Acetylcysteine-decorated Prussian blue nanoparticles for strong photothermal sterilization and focal infection treatment

Author:
Suya Cai; Jun Qian; Sen Yang; Liangju Kuang; Daoben Hua
Source:
Colloids and surfaces 2019 v.181 pp. 31-38
ISSN:
0927-7765
Subject:
Staphylococcus aureus; secretion; lipids; cell membranes; near infrared radiation; mammals; drug resistance; irradiation; tissues; bacterial infections; Escherichia coli; cytotoxicity; bacterial adhesion; heat; subcutaneous injection; biofilm; mucus; coprecipitation; nanoparticles; bacteria
Abstract:
... The major challenge in bacterial infection in clinical settings is the development of antimicrobial materials in the treatment of drug-resistant bacteria. Herein, we report a new strategy for efficient near-infrared radiation (NIR) photothermal sterilization and focal infection treatment by acetylcysteine-modified Prussian blue nanoparticles (AC-PB). Specifically, AC-PB is fabricated as a multifun ...
DOI:
10.1016/j.colsurfb.2019.05.007

10. Achieving high adsorption capacity and ultrafast removal of methylene blue and Pb2+ by graphene-like TiO2@C

Author:
Wei Gan; Xin Shang; Xuan-Hua Li; Jian Zhang; Xucheng Fu
Source:
Colloids and surfaces 2019 v.561 pp. 218-225
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; colloids; heavy metals; human health; hydrogen bonding; lead; metal ions; methylene blue; moieties; pollution control; surface area; wastewater; water pollution
Abstract:
... Water pollution from heavy metal ions and organic have threatened human health and the removal of those pollutions from wastewater has become a critical issue around the world. Herein, we synthesized the ultrathin, high surface area graphene-like TiO₂@C adsorbent via a simple solvothermal process. Benefiting from the unique structure, abundant active functional groups and high surface area (417 m² ...
DOI:
10.1016/j.colsurfa.2018.10.079

11. Acid hydrolysis behavior of insoluble protein-rich fraction extracted from Chlorella protothecoides

Author:
Laixin Dai; Corina L. Reichert; Jörg Hinrichs; Jochen Weiss
Source:
Colloids and surfaces 2019 v.569 pp. 129-136
ISSN:
0927-7757
Subject:
Chlorella; acid hydrolysis; functional properties; gel electrophoresis; hydrochloric acid; hydrolysates; hydrophobicity; light microscopy; microalgae; nitrogen; polypeptides; protein aggregates; solubility; storage proteins; zeta potential
Abstract:
... Microalgae are valuable sources of proteins due to their ability to accumulate high levels of nitrogen in their cells’ interior. Similar to plant-derived proteins though, many microalgae proteins are not structural but storage proteins and consequently have low aqueous solubility limiting their use in food, pharmaceutical or personal care applications. Since a number of studies had previously show ...
DOI:
10.1016/j.colsurfa.2019.02.064

12. Acid-free synthesis of polyaniline nanotubes for dual removal of organic dyes from aqueous solutions

Author:
Wael A. Amer; Mohamed M. Omran; Mohamad M. Ayad
Source:
Colloids and surfaces 2019 v.562 pp. 203-212
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; ammonium persulfate; aniline; aqueous solutions; colloids; energy-dispersive X-ray analysis; heat production; methyl orange; methylene blue; models; nanotubes; nitrogen; oxidants; oxidation; pH; polymers; scanning electron microscopy; sorption isotherms; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... Polyaniline nanotubes (PANI-NTs) were prepared by a green approach via the aniline oxidation using ammonium peroxydisulfate as an oxidant in the presence of methyl orange (MO) as a structure-guiding agent without any acid for the dual removal of anionic and cationic dyes from aqueous solutions. The structure, morphology and the physicochemical properties of the synthesized PANI-NTs were examined b ...
DOI:
10.1016/j.colsurfa.2018.10.081

13. Acoustic characterisation of pH dependant reversible micellar casein aggregation

Author:
M.J. Francis; Z.J. Glover; Q. Yu; M.J. Povey; M.J. Holmes
Source:
Colloids and surfaces 2019 v.568 pp. 259-265
ISSN:
0927-7757
Subject:
acoustics; casein; colloids; dispersions; isoelectric point; micelles; models; pH; particle size; particle size distribution; zeta potential
Abstract:
... Ultrasound and light-based measurements were used to monitor changes in agitated and quiescent solution characteristics such as particle size distribution during casein aggregation and redistribution in a model colloidal system. The precipitation of casein micelles was controlled by adjusting the pH of the solution to alter the stability of the micelles. The studied dispersions were prepared at hi ...
DOI:
10.1016/j.colsurfa.2019.02.026

14. Action of Vipoxin and its separated components on monomolecular film of Dilauroylphosphatidylcholine at the air/water interface

Author:
K. Mircheva; S.D. Petrova; Tz. Ivanova; I. Panaiotov; K.T. Balashev
Source:
Colloids and surfaces 2019 v.562 pp. 196-202
ISSN:
0927-7757
Subject:
air; atomic force microscopy; colloids; kinetics; liquid-air interface; neurotoxins; protein subunits
Abstract:
... The growing research interest about neurotoxin Vipoxin is inspired by its intriguing heterodimeric structure and the resulting interactions between Vipoxin’s basic catalytic subunit and the acidic regulatory subunit.In this paper we studied the enzymatic action of Vipoxin and its individual components on Dilauroylphosphatidylcholine (DLPC) monolayers at air-water interfaces. We applied the classic ...
DOI:
10.1016/j.colsurfa.2018.11.040

15. Activated biochar with iron-loading and its application in removing Cr (VI) from aqueous solution

Author:
Rao He; Xingzhong Yuan; Zhongliang Huang; Hou Wang; Longbo Jiang; Jing Huang; Mengjiao Tan; Hui Li
Source:
Colloids and surfaces 2019 v.579 pp. 123642
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; Populus; X-ray diffraction; X-ray photoelectron spectroscopy; activation energy; adsorbents; adsorption; aqueous solutions; bamboos; biochar; calcium carbonate; chromium; coprecipitation; electrostatic interactions; iron; models; pH; porosity; sorption isotherms; surface area; wastewater
Abstract:
... New biochar-based materials were synthesized via iron salt loading on biochar (derived from bamboo and poplar) or activated biochar and were used for Cr (VI) removal from aqueous solution. Surface morphology structure characterizations revealed that KOH-activated biochar possessed a large surface area and porosity with uniform distribution of iron particles on the biochar’s surface. In particular, ...
DOI:
10.1016/j.colsurfa.2019.123642

16. Activated carbon supported MnO2 for catalytic degradation of reactive black 5

Author:
Hayarpi S. Saroyan; Anastasia Arampatzidou; Dimitra Voutsa; Nikolaos K. Lazaridis; Eleni A. Deliyanni
Source:
Colloids and surfaces 2019 v.566 pp. 166-175
ISSN:
0927-7757
Subject:
activated carbon; catalysts; catalytic activity; colloids; hydrogen peroxide; manganese; manganese dioxide; nanoparticles; surface area; synthesis
Abstract:
... In the present work, a commercial activated carbon was impregnated with MnO2 through a facile and efficient one-pot synthesis method. The impregnated carbon was characterized for the Mn content, the textural characteristics, the surface chemistry and the efficiency for removal and degradation of RB5. The MnO2 nanoparticles with an average size of 35 nm, were homogeneously dispersed in the carbon m ...
DOI:
10.1016/j.colsurfa.2019.01.025

17. Acute heavy metal toxicity test based on bacteria-hydrogel

Author:
Yue Zhang; Tingting Ren; Junhui He; Hua Tian; Binbin Jin
Source:
Colloids and surfaces 2019 v.563 pp. 318-323
ISSN:
0927-7757
Subject:
bacteria; bioassays; biosensors; colloids; encapsulation; enzyme activity; heavy metals; hydrogels; metal ions; shelf life; toxicity; toxicity testing; viability
Abstract:
... Toxicity test sensor for heavy metal ions is developed in this work. It founds that toxic heavy metal ions leads both bacterial enzymatic activity and viability. Moreover, the hydrogel encapsulation of bacteria was performed to achieve two purposes: (1) to enhance the viability/activity of the biological sensing agent and thus prolong the shelf life of biosensors based on bacteria; and (2) to furt ...
DOI:
10.1016/j.colsurfa.2018.12.016

18. Additive-based stability assessment of biologically designed CuO and GSH-CuO nanospheres and their applicability as Nano-biosensors

Author:
Noor-ul Ain; Naila Safdar; Azra Yasmin
Source:
Colloids and surfaces 2019 v.178 pp. 66-73
ISSN:
0927-7765
Subject:
Berberis lycium; X-ray diffraction; absorbance; additives; ascorbic acid; catalytic activity; catechin; copper nanoparticles; cupric oxide; emulsions; glutathione; hydrogen peroxide; mixing; nanospheres; pH; particle size; peroxidase
Abstract:
... Uncapped and Glutathione capped Cupric oxide nanospheres were synthesized by the interaction of Berberis lycium (Bl) root extract with corresponding salt solution. CuO nanospheres were best optimized by mixing 2% Bl extract solution with 1 mM CuSO4·5H2O (pH 11, 90 °C) Reduced glutathione (0.25 mM) in solution form was added in respective emulsion after 24 h. Synthesis of nanospheres was ensured by ...
DOI:
10.1016/j.colsurfb.2019.02.048

19. Adhesion mediated transport of bacterial pathogens in saturated sands coated by phyllosilicates and Al-oxides

Author:
Zhi-neng Hong; Jun Jiang; Jiu-yu Li; Ren-kou Xu; Jing Yan
Source:
Colloids and surfaces 2019 v.181 pp. 215-225
ISSN:
0927-7765
Subject:
Escherichia coli; Staphylococcus aureus; aluminum oxide; bacteria; chemical interactions; coatings; hydrophobicity; ionic strength; kaolinite; montmorillonite; pH; pathogens; porous media; prediction; quartz; soil
Abstract:
... The current knowledge of bacterial migration is mainly derived from work using bare or Fe-coated quartz sands as porous media. However, mineral coatings on quartz by phyllosilicates and Al-oxides prevail in natural soils, and their effect on bacterial transport remains unknown. Herein, we systematically explored the transport of two bacterial pathogens (Escherichia coli and Staphylococcus aureus) ...
DOI:
10.1016/j.colsurfb.2019.05.044

20. Adhesion, proliferation, and osteogenic differentiation of human mesenchymal stem cells on additively manufactured Ti6Al4V alloy scaffolds modified with calcium phosphate nanoparticles

Author:
Ekaterina A. Chudinova; Maria A. Surmeneva; Alexander S. Timin; Timofey E. Karpov; Alexandra Wittmar; Mathias Ulbricht; Anna Ivanova; Kateryna Loza; Oleg Prymak; Andrey Koptyug; Matthias Epple; Roman A. Surmenev
Source:
Colloids and surfaces 2019 v.176 pp. 130-139
ISSN:
0927-7765
Subject:
adhesion; alkaline phosphatase; alloys; biocomposites; bone formation; calcium phosphates; cell growth; cell proliferation; colloids; contact angle; electrophoresis; humans; hydrophilicity; light scattering; melting; mesenchymal stromal cells; mineralization; nanoparticles; polyethyleneimine; scanning electron microscopy; zeta potential
Abstract:
... In the present study, biocomposites based on 3D porous additively manufactured Ti6Al4V (Ti64) scaffolds modified with biocompatible calcium phosphate nanoparticles (CaPNPs) were investigated. Ti64 scaffolds were manufactured via electron beam melting technology using an Arcam machine. Electrophoretic deposition was used to modify the scaffolds with CaPNPs, which were synthesized by precipitation i ...
DOI:
10.1016/j.colsurfb.2018.12.047

21. Adjustable optical transmittance of superhydrophobic carbon soot coatings by in-situ single-step control of their physicochemical profile

Author:
Karekin D. Esmeryan; Carlos E. Castano; Yulian I. Fedchenko; Reza Mohammadi; Ilko K. Miloushev; Krassimir A. Temelkov
Source:
Colloids and surfaces 2019 v.567 pp. 325-333
ISSN:
0927-7757
Subject:
X-ray photoelectron spectroscopy; aerosols; air flow; carbon; chemical bonding; coatings; colloids; combustion; environmental impact; fossil fuels; global warming; hydrophobicity; light transmission; nanoparticles; rapeseed oil; scanning electron microscopy; soot; transmittance; wastes
Abstract:
... Soot aerosol formation in the ambient atmosphere, due to inappropriate and incomplete incineration of various fossil fuels or waste materials, has been considered as one of the major anthropogenic contributions to the global warming. However, despite of their adverse environmental impact, the soot nanoparticles are extremely useful in many practical applications if deposited as coatings, since the ...
DOI:
10.1016/j.colsurfa.2019.01.048

22. Adsorption and desorption of Pb2+ on magnetic Mn2O3 as highly efficient adsorbent: Isotherm, kinetic and thermodynamic studies

Author:
Parastoo Jamshidi; Farzaneh Shemirani
Source:
Colloids and surfaces 2019 v.571 pp. 151-159
ISSN:
0927-7757
Subject:
X-ray diffraction; adsorbents; adsorption; ambient temperature; desorption; detection limit; iron oxides; lead; magnetic properties; magnetism; manganese oxides; nanocomposites; scanning electron microscopy; solid phase extraction; solvents; standard deviation; surface area; thermodynamics; transmission electron microscopy; vegetables
Abstract:
... This article focuses on adsorption and desorption of Pb²⁺ on a novel adsorbent consisting of Mn₂O₃ and Fe₃O₄. The adsorbent was prepared through combining Sol-Gel and precipitation methods to in-situ magnetization. Decreasing preparation time, synthesizing at room temperature, not using organic solvents are advantages of the presented approach. The characterizations were done by X-ray diffraction, ...
DOI:
10.1016/j.colsurfa.2019.02.043

23. Adsorption behavior of mixed dodecane/n-valeric acid collectors on low-rank coal surface: Experimental and molecular dynamics simulation study

Author:
Zechen Liu; Yangchao Xia; Qingteng Lai; Maoyan An; Yinfei Liao; Yongtian Wang
Source:
Colloids and surfaces 2019 v.583 pp. 123840
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; absorption; adsorption; coal; collectors; contact angle; energy; hydrophilicity; hydrophobicity; lipophilicity; moieties; molecular dynamics
Abstract:
... In this investigation, a mixed collector (MC) of dodecane and n-valeric acid was used to improve low rank coal flotation. Fourier transformation infrared spectroscopy (FTIR) measurements and contact angle measurements were conducted to explain flotation responses. Furthermore, using a molecular dynamics (MD) simulation, the changes of water/collector (dodecane or MC)/coal systems were studied befo ...
DOI:
10.1016/j.colsurfa.2019.123840

24. Adsorption behaviors and mechanisms of quaternary ammonium salt collectors on quartz samples with different particle sizes

Author:
Hao Jiang; Wenping Han; Chen Zhao; Huifeng Luo; Guoyuan Xiang
Source:
Colloids and surfaces 2019 v.581 pp. 123748
ISSN:
0927-7757
Subject:
adsorption; ammonium salts; carbon; collectors; fluorescence; particle size; quartz; quaternary ammonium compounds; sorption isotherms
Abstract:
... In this study, the flotation behavior of quartz samples with different particle sizes was systematically studied by conducting a microflotation experiment wherein different quaternary ammonium salt (QAS) collectors were used. The mechanism of QAS adsorption on the surfaces of the quartz samples was revealed by adsorption experiments and micro-polarity characteristics at the quartz-water interface. ...
DOI:
10.1016/j.colsurfa.2019.123748

25. Adsorption behaviour of Eriochrome Black T from water onto a cross-linked β-cyclodextrin polymer

Author:
Xia Li; Xiao-Juan Nie; Yu-Nuo Zhu; Wen-Chao Ye; Yu-Lin Jiang; Shi-Long Su; Bi-Ting Yan
Source:
Colloids and surfaces 2019 v.578 pp. 123582
ISSN:
0927-7757
Subject:
adsorption; beta-cyclodextrin; crosslinking; electrostatic interactions; endothermy; epichlorohydrins; models; pH; polymers; sorption isotherms; temperature; thermodynamics; triazoles
Abstract:
... In this paper, a new β-cyclodextrin polymer (β-CDBEP) was successfully prepared by derivatizing with 1H-benzotriazole followed by cross-linking with epichlorohydrin. The adsorption behaviour of β-CDBEP for anionic Eriochrome Black T (EBT) was studied by batch experiments. The results showed that the highest adsorption capacity was obtained in acidic medium (pH = 5), and the pseudo-second-order mod ...
DOI:
10.1016/j.colsurfa.2019.123582

26. Adsorption kinetics of halloysite nanotube and modified halloysite at the Palm oil-water interface and Pickering emulsion stabilized by halloysite nanotube and modified halloysite nanotube

Author:
Pegah Sadeh; Iman Najafipour; Mohsen Gholami
Source:
Colloids and surfaces 2019 v.577 pp. 231-239
ISSN:
0927-7757
Subject:
adsorption; contact angle; diffusivity; emulsions; halloysite; hydrophilicity; hydrophobicity; nanoparticles; nanotubes; oil-water interface; surface tension
Abstract:
... In this study, the interfacial tension behavior of halloysite nanotube (HNT) as a hydrophilic nanoparticle and modified APTES-HNT as a hydrophobic nanoparticle at the palm oil-water interface was investigated. The result of this study was used to determine the stability and potential formation of Pickering emulsion as a novel dispersed system. The diffusion coefficients at the initial and late sta ...
DOI:
10.1016/j.colsurfa.2019.05.034

27. Adsorption mechanism of carboxymethyl cellulose onto mesoporous mustard carbon: Experimental and theoretical aspects

Author:
Kaman Singh; Ashok Kumar; Shikha Awasthi; Sarvesh Kumar Pandey; Prashant Mishra
Source:
Colloids and surfaces 2019 v.581 pp. 123786
ISSN:
0927-7757
Subject:
Gibbs free energy; adsorption; beverages; carbon; carboxymethylcellulose; ceramics; coatings; detergents; drilling; energy; food industry; hydrogen bonding; industrial applications; oils; pH; pharmaceutical industry; polymers; porous media; spectrophotometers; surface area; theoretical models; urea
Abstract:
... Carboxymethyl cellulose (CMC) is a versatile polymer for several industrial applications such as oil drilling, detergents, food and beverage, papers, ceramics, coatings, and other promising utilization. However, the deficiency for exploring the binding mechanism of the CMC onto the solid surfaces in aqueous system retards its applications. Herein, the binding aspect of CMC onto mesoporous mustard ...
DOI:
10.1016/j.colsurfa.2019.123786

28. Adsorption of 3-Aminoacetanilide from aqueous solution by chemically modified hyper-crosslinked resins: Adsorption equilibrium, thermodynamics and selectivity

Author:
Tao Wang; Chunhui Shen; Nan Wang; Jianjun Dai; Zongtang Liu; Zhenghao Fei
Source:
Colloids and surfaces 2019 v.575 pp. 346-351
ISSN:
0927-7757
Subject:
adsorbents; adsorption; aqueous solutions; endothermy; hydrochloric acid; models; pH; porosity; resins; sorption isotherms; surface area; thermodynamics
Abstract:
... Herein a series of chemically modified hyper-crosslinked resins were prepared and the four resins had been employed to remove 3-Aminoacetanilide from aqueous solution. Pore size and BET specific surface area of the four resins were improved by characterization, and specific surface area size was SAMR > PRLMR > TAMR > IDLMR. The results showed that Freundlich model could fit the adsorption isotherm ...
DOI:
10.1016/j.colsurfa.2019.05.029

29. Adsorption of Pb2+ and Cd2+ onto Spirulina platensis harvested by polyacrylamide in single and binary solution systems

Author:
Xiaolu Sun; Haiyan Huang; Yaqun Zhu; Yingying Du; Lunguang Yao; Xincheng Jiang; Pengcheng Gao
Source:
Colloids and surfaces 2019 v.583 pp. 123926
ISSN:
0927-7757
Subject:
Arthrospira platensis; Fourier transform infrared spectroscopy; adsorbents; adsorption; cadmium; cations; energy-dispersive X-ray analysis; heavy metals; industrial wastewater; lead; metal ions; microalgae; models; pH; polyacrylamide; scanning electron microscopy; sorption isotherms; wastewater treatment
Abstract:
... This study examined the feasibility and characteristics of microalgae waste treatment using a mixture of Spirulina platensis and polyacrylamide (SP-PAM) as an adsorbent system for removing Pb²⁺ and Cd²⁺ from simulated wastewater in single and binary solution systems. Multiple techniques, including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), energy-dispersiv ...
DOI:
10.1016/j.colsurfa.2019.123926

30. Adsorption of U(VI) on montmorillonite in the presence of ethylenediaminetetraacetic acid

Author:
Wanqiang Zhou; Jingyi Wang; Jiangang He; Xiaoyu Yang; Yanlin Shi; Xiangyun Wang; Chunli Liu
Source:
Colloids and surfaces 2019 v.583 pp. 123929
ISSN:
0927-7757
Subject:
EDTA (chelating agent); X-ray photoelectron spectroscopy; adsorption; groundwater; infrared spectroscopy; migratory behavior; models; montmorillonite; pH; radioactive pollution; reflectance spectroscopy; uranium
Abstract:
... The adsorption, diffusion and migration behaviors of uranium may be highly influenced by organics in natural environments. Ethylenediaminetetraacetic acid (EDTA) is one of the most important small organics in groundwaters, especially at the radioactive contaminated sites. In this work, we studied U(VI) adsorption on montmorillonite in the presence of EDTA with batch method. Our results indicated t ...
DOI:
10.1016/j.colsurfa.2019.123929

31. Adsorption of amino acids at clay surfaces and implication for biochemical reactions: Role and impact of surface charges

Author:
Chang Zhu; Qian Wang; Xiaoxiao Huang; Jiena Yun; Qiaoli Hu; Gang Yang
Source:
Colloids and surfaces 2019 v.183 pp. 110458
ISSN:
0927-7765
Subject:
adsorption; chemical reactions; clay; clay minerals; electrostatic interactions; glycine (amino acid); isomers; zwitterions
Abstract:
... Almost all clay minerals carry an abundance of surface charges. The role and impacts of surface charges during adsorption of amino acids and biochemical reactions are of great importance while currently remain elusive, which are to be tackled in this study by first-principles density functional calculations. A wide range of surface charges (−0.42˜ + 0.42 C m⁻²) have been considered. Distribution o ...
DOI:
10.1016/j.colsurfb.2019.110458

32. Adsorption of arsenic by activated charcoal coated zirconium-manganese nanocomposite: Performance and mechanism

Author:
Yuwei Yin; Tingting Zhou; Hanjin Luo; Junjie Geng; Wenyi Yu; Zhongjie Jiang
Source:
Colloids and surfaces 2019 v.575 pp. 318-328
ISSN:
0927-7757
Subject:
activated carbon; adsorption; anions; arsenic; bicarbonates; chlorides; drinking water; fluorides; manganese; manganese dioxide; nanocomposites; nitrates; oxidation; phosphates; pollution; sorbents; sulfates; surface area; toxicity; zirconium; zirconium oxide
Abstract:
... As(III) is more toxic and harder to remove than As(V) though they are always co-exist in water. In order to effectively eliminate pollution of arsenic and explore the adsorption mechanism, a novel-innovative hydrated zirconium oxide (ZrO(OH)₂) and manganese dioxide (MnO₂) coated modified activated charcoal (Zr/Mn/C) prepared via a co-precipitation-hydrothermal method. Results showed that As(III) c ...
DOI:
10.1016/j.colsurfa.2019.04.093

33. Adsorption of bovine serum albumin at oil-water interface in the presence of polyelectrolytes and nature of interaction forces

Author:
A.W. Zaibudeen; John Philip
Source:
Colloids and surfaces 2019 v.566 pp. 38-47
ISSN:
0927-7757
Subject:
adsorption; biocompatibility; bovine serum albumin; colloids; droplets; electrolytes; electrophoresis; emulsions; extended shelf life; hydrodynamics; hydrophobicity; magnetite; molecular weight; nanoparticles; octane; oil-water interface; oils; polyacrylic acid; quaternary ammonium compounds; zeta potential
Abstract:
... Here we report the adsorption behavior of protein at an oil-water interface, that is covered with polyelectrolytes (PE) and the interaction forces involved. The weak and strong PE’s used are poly(acrylic acid), PAA and poly(diallyldimethylammonium chloride), PDDA, respectively. The protein and oil used are bovine serum albumin (BSA) and octane droplets in water, containing superparamagnetic magnet ...
DOI:
10.1016/j.colsurfa.2019.01.014

34. Adsorption of chia proteins at interfaces: Kinetics of foam and emulsion formation and destabilization

Author:
Débora N. López; Valeria Boeris; Darío Spelzini; Carla Bonifacino; Luis A. Panizzolo; Cecilia Abirached
Source:
Colloids and surfaces 2019 v.180 pp. 503-507
ISSN:
0927-7765
Subject:
adsorption; air; conductimetry; drainage; droplet size; emulsions; foaming properties; foams; hydrophobicity; liquids; pH; proteins; solubilization
Abstract:
... Chia proteins were extracted by solubilisation at pH 10 or 12 and precipitated at pH 4.5. Isolates were named as CPI10 and CPI12, according to their extraction pH, 10 or 12, respectively. The surface properties of both isolates were studied at neutral conditions. Foams were formed by air bubbling and both the formation and destabilization processes were analysed by conductimetry. The extraction pH ...
DOI:
10.1016/j.colsurfb.2019.04.067

35. Adsorption of gases and vapours in silica based xerogels

Author:
Joana Fernandes; Ana C. Fernandes; Jesús C. Echeverría; Paula Moriones; Julián J. Garrido; João Pires
Source:
Colloids and surfaces 2019 v.561 pp. 128-135
ISSN:
0927-7757
Subject:
adsorption; carbon dioxide; colloids; ethane; ethylene; hexane; isomers; methane; pH; pentane; porous media; silica; vapors; xerogels
Abstract:
... In spite of the outstanding adsorption properties of microporous silica and hybrid silica xerogels, the selectivity of these materials towards gases and vapours has been studied to a little extent. In this work we studied selected silica and hybrid xerogels of microporous nature to evaluate their adsorption properties for the following molecular separations: carbon dioxide / methane; ethane/ethyle ...
DOI:
10.1016/j.colsurfa.2018.10.063

36. Adsorption of phosphate by sediments in a eutrophic lake: Isotherms, kinetics, thermodynamics and the influence of dissolved organic matter

Author:
Fazhi Xie; Zhili Dai; Yuanrong Zhu; Guolian Li; Haibin Li; Zhongqi He; Shixiong Geng; Fengchang Wu
Source:
Colloids and surfaces 2019 v.562 pp. 16-25
ISSN:
0927-7757
Subject:
adsorption; algae; algal blooms; biogeochemical cycles; colloids; desorption; dissolved organic matter; endothermy; eutrophication; fulvic acids; kinetics; lakes; nutrients; oxides; phosphates; phosphorus; sediment-water interface; sediments; sorption isotherms; temperature; thermodynamics
Abstract:
... Adsorption and desorption of phosphorus (P) at sediment-water interface is one of the key processes of biogeochemical cycling of P in lakes. Thus, adsorption of phosphate by sediments from Lake Dianchi, a eutrophic lake, was investigated in this study. Importantly, the influence of dissolved organic matter (DOM) with fulvic acid (FA) as a representative example on these processes was further studi ...
DOI:
10.1016/j.colsurfa.2018.11.009

37. Adsorption of proteins on gold nanoparticles: One or more layers?

Author:
Dmitriy V. Sotnikov; Anna N. Berlina; Vladislav S. Ivanov; Anatoly V. Zherdev; Boris B. Dzantiev
Source:
Colloids and surfaces 2019 v.173 pp. 557-563
ISSN:
0927-7765
Subject:
adsorption; bovine serum albumin; colloids; fluorescence; gold; immunoglobulin G; nanogold; nanoparticles; pH
Abstract:
... Adsorption of proteins on nanoparticles is a complex and poorly studied process. The mechanisms of protein layer formation can fundamentally differ depending on the composition of the medium, the nanoparticles’ structure, the protein’s nature, and other factors. In particular, monolayer or multilayer immobilization may occur. In the present work, the composition of conjugates of bovine serum album ...
DOI:
10.1016/j.colsurfb.2018.10.025

38. Adsorption of sulfamethoxazole and tetracycline on montmorillonite in single and binary systems

Author:
Mi Wu; Shifeng Zhao; Mingxiu Tang; Ruisen Jing; Yifei Shao; Xijuan Liu; Yuanpeng Dong; Mingzhu Li; Qiang Liao; Guocheng Lv; Qian Zhang; Zilin Meng; Aiju Liu
Source:
Colloids and surfaces 2019 v.575 pp. 264-270
ISSN:
0927-7757
Subject:
adsorbents; adsorption; hydrophobic bonding; kinetics; mechanism of action; molecular dynamics; montmorillonite; sorption isotherms; sulfamethoxazole; tetracycline
Abstract:
... The contaminantsin environment generally do not exist alone and possess different physical and chemical properties, their environmental behavior and mechanism of action in environment are more complicated. Montmorillonite was employed as adsorbent to remove tetracycline (TC) and sulfamethoxazole (SMZ) respectively and simultaneously under batch kinetic and different solution conditions. As the con ...
DOI:
10.1016/j.colsurfa.2019.05.025

39. Adsorption of tylosin and sulfamethazine by carbon nanotubes and titanium dioxide nanoparticles: pH-dependent mechanisms

Author:
Tianjiao Xia; Ni Yan; Shunli Li; Yixuan Lin; Tong Su
Source:
Colloids and surfaces 2019 v.581 pp. 123851
ISSN:
0927-7757
Subject:
adsorbents; adsorption; aquatic environment; carbon nanotubes; electrophoresis; electrostatic interactions; light scattering; livestock and meat industry; nanoparticles; pH; sulfamethazine; titanium dioxide; transmission electron microscopy; tylosin
Abstract:
... The extensive application of antibiotics in livestock industry inescapably leads to their release to the aquatic environment. The occurrence of multiple engineered nanomaterials (ENMs) in various water systems also has been widely observed. The interaction between the coexisting antibiotics and ENMs will affect their transport and fate in water. In this study, the adsorption of two representative ...
DOI:
10.1016/j.colsurfa.2019.123851

40. Adsorption/desorption behavior of cationic and anionic dyes by biochars prepared at normal and high pyrolysis temperatures

Author:
Jong-Hwan Park; Jim J. Wang; Yili Meng; Zhuo Wei; Ronald D. DeLaune; Dong-Cheol Seo
Source:
Colloids and surfaces 2019 v.572 pp. 274-282
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; biochar; carbon; desorption; electrostatic interactions; methylene blue; models; molecular weight; pyrolysis; sorption isotherms; surface area; temperature; wastewater
Abstract:
... The purpose of this study was to determine the properties of biochar prepared at higher than normal biochar production temperature and to evaluate adsorption/desorption characteristics for three commonly used dyes of different charge and molecular nature: Methylene Blue (MB), Orange G (OG) and Congo Red (CR). The switchgrass-biochar was prepared at common pyrolysis temperature of 600 °C (SB600) an ...
DOI:
10.1016/j.colsurfa.2019.04.029

41. Adsorptive removal of Pb(II) ions from aqueous solutions by multi-walled carbon nanotubes functionalised by selenophosphoryl groups: Kinetic, mechanism, and thermodynamic studies

Author:
Joanna Kończyk; Sandra Żarska; Wojciech Ciesielski
Source:
Colloids and surfaces 2019 v.575 pp. 271-282
ISSN:
0927-7757
Subject:
adsorbents; adsorption; aqueous solutions; cadmium; carbon nanotubes; cobalt; copper; endothermy; ions; lead; models; moieties; nickel; pH; sorption isotherms; temperature; thermodynamics; zinc
Abstract:
... Multi-walled carbon nanotubes functionalised by di-t-butyl selenophosphoryl groups were used to remove Pb(II) ions from synthetic and real aqueous solutions. The effects of the initial Pb(II) ion concentrations, pH, and volume of the synthetic aqueous solution, adsorbent dosage, and temperature on the efficiency of the adsorption process were investigated in batch experiments. The highest Pb(II) r ...
DOI:
10.1016/j.colsurfa.2019.04.058

42. Adsorptive removal of sulfamethazine and sulfamethoxazole from aqueous solution by hexadecyl trimethyl ammonium bromide modified activated carbon

Author:
Ying Liu; Xiaohui Liu; Guodong Zhang; Tao Ma; Tingqin Du; Yong Yang; Shaoyong Lu; Weiliang Wang
Source:
Colloids and surfaces 2019 v.564 pp. 131-141
ISSN:
0927-7757
Subject:
activated carbon; adsorbents; adsorption; antibiotics; aqueous solutions; cadmium; cetyltrimethylammonium bromide; colloids; drinking water; hydrogen bonding; hydrophobic bonding; models; pH; risk; sediments; soil; sorption isotherms; sulfamethazine; sulfamethoxazole; surface water
Abstract:
... Sulfonamide antibiotics are widely detected in soil, surface water, sediments and drinking water due to their stable nature, which has huge potential risks. In this study, we reclaimed activated carbon with hexadecyl trimethyl ammonium bromide (CTAB) modification (MAC) as the adsorbents to remove aqueous sulfamethazine (SMX) and sulfamethoxazole (SMZ). It was best described by the pseudo second-or ...
DOI:
10.1016/j.colsurfa.2018.12.041

43. Advanced fabrication and multi-properties of rubber aerogels from car tire waste

Author:
Quoc Ba Thai; Toh Ee Siang; Duyen Khac Le; Wassim Akram Shah; Nhan Phan-Thien; Hai M. Duong
Source:
Colloids and surfaces 2019 v.577 pp. 702-708
ISSN:
0927-7757
Subject:
aerogels; buildings; contact angle; cost effectiveness; durability; foams; freeze drying; glutaraldehyde; heat; industrial applications; insulating materials; oil spills; oils; polyvinyl alcohol; porosity; rubber; sorbents; thermal stability; tires; wastes
Abstract:
... For the first time, recycled car tire fibers (RCTF) shredded from car tire waste are developed successfully into a novel material, a rubber aerogel, using polyvinyl alcohol (PVA) and glutaraldehyde (GA) as crosslinkers through a cost-effective freeze-drying method. Its structure and main physical properties are investigated comprehensively for high-value applications, such as heat and sound insula ...
DOI:
10.1016/j.colsurfa.2019.06.029

44. Advances in biosynthesis of noble metal nanoparticles mediated by photosynthetic organisms—A review

Author:
Zeqing Bao; Christopher Q. Lan
Source:
Colloids and surfaces 2019 v.184 pp. 110519
ISSN:
0927-7765
Subject:
NAD (coenzyme); biosynthesis; catalysts; catalytic activity; cost effectiveness; drug carriers; enzymes; metal ions; microalgae; nanoparticles; photosynthetic bacteria; pigments; polysaccharides; proteins
Abstract:
... The last decade has witnessed significant developments in the biosynthesis of noble metal nanoparticles (NMNPs) due to their distinct advantages in various practical applications. Many photosynthetic organisms, including plants, microalgae, and photosynthetic bacteria, have been explored for NMNP synthesis in an eco-friendly and cost-effective manner. These biomasses were used for NMNP biosynthesi ...
DOI:
10.1016/j.colsurfb.2019.110519

45. Adverse effects of p-TSA-doped polypyrrole particulate exposure during zebrafish (Danio rerio) development

Author:
Kesiane M. Costa; Talita C.B. Pereira; Cristhiane A. Valente; Kenia Pissinate; Jéssica C. Soares; Fernanda F. Cruz; Temis W.F. Corte; Pablo Machado; Nara R.S. Basso; Maurício R. Bogo
Source:
Colloids and surfaces 2019 v.177 pp. 58-67
ISSN:
0927-7765
Subject:
in vivo studies; heart rate; locomotion; dose response; nanomaterials; chorion; colloids; pyrroles; nanomedicine; hatching; body length; mortality; polymers; larvae; Danio rerio; embryogenesis; sulfonic acids; adverse effects
Abstract:
... Nanomaterials have been attracting attention due to the wide range of applications in nanomedicine. Polypyrrole (PPy), a conductive polymer, has been employed in the biomedical field due to its stimulus-responsive properties, although in vivo studies to assess its potential undesirable effects are limited. This study evaluated the effects of PPy doped with p-toluene sulfonic acid ((p-TSA); PPy/p-T ...
DOI:
10.1016/j.colsurfb.2019.01.041

46. Affinity binding of aptamers to agarose with DNA tetrahedron for removal of hepatitis B virus surface antigen

Author:
Hao Zheng; Yange Lang; Jing Yu; Zhenwei Han; Bin Chen; Yefu Wang
Source:
Colloids and surfaces 2019 v.178 pp. 80-86
ISSN:
0927-7765
Subject:
DNA; adsorbents; adsorption; agarose; biocompatibility; confocal microscopy; cytotoxicity; electrophoresis; fibroblasts; hepatitis B; hepatitis B antigens; lungs; nanomaterials; oligonucleotides; viability assays
Abstract:
... DNA nanostructures are effective intermediates for immobilizing biomolecules because of their high level of controllability, the flexibility to create desired nanostructures through precision “bottom-up” assembly and the convenience to building fine nanostructures. The purpose of this study was to demonstrate the potential use of aptamers bound to agarose through a DNA tetrahedral structure to mak ...
DOI:
10.1016/j.colsurfb.2019.02.040

47. Ag2CO3 anchored on BiOI/CoFe2O4 composites with p-n-p heterojunctions: Highly enhanced activity for photocatalytic oxidation of Hg0 under fluorescent light irradiation

Author:
Yichao Wang; Anchao Zhang; Dan Zhang; Puyang Zhou; Ruirui Wang; Jun Xiang; Xinmin Zhang; Sheng Su
Source:
Colloids and surfaces 2019 v.579 pp. 123654
ISSN:
0927-7757
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; absorbance; carbonates; electric current; energy-dispersive X-ray analysis; fluorescent lighting; ions; irradiation; light; mercury; oxidation; photocatalysis; photocatalysts; scanning electron microscopy; sulfur dioxide; superoxide anion; toxicity; transmission electron microscopy
Abstract:
... Ag₂CO₃ anchored on BiOI/CoFe₂O₄ composites with p-n-p heterojunctions were synthesized by means of a facile modified deposition-precipitation method and were utilized to explore their activities for toxic elemental mercury (Hg⁰) removal under fluorescent light (FSL) irradiation. The obtained samples were characterized via N₂ adsorption-desorption, XRD, VSM, SEM, TEM, XPS, EDS, UV–vis DRS, ESR, Tra ...
DOI:
10.1016/j.colsurfa.2019.123654

48. Aggregation and microstructure of cereal β-glucan and its association with other biomolecules

Author:
Claudia Zielke; Yi Lu; Lars Nilsson
Source:
Colloids and surfaces 2019 v.560 pp. 402-409
ISSN:
0927-7757
Subject:
aggregation behavior; analytical methods; barley; beta-glucans; bile acids; blood; chemical bonding; cholesterol; colloids; colon; coronary disease; dietary fiber; digestion; digestive enzymes; electrostatic interactions; humans; microstructure; molecular weight; oats; proteins; risk reduction; slurries
Abstract:
... A plethora of studies have shown the ability of cereal dietary fiber to improve intestinal health and to protect the colon from diseases. Lowering of blood cholesterol levels and a reduced risk of coronary heart diseases are just examples for beneficial health effects often directly related to β-glucan from cereal grains. β-Glucan is one of the major components of dietary fiber and is found with h ...
DOI:
10.1016/j.colsurfa.2018.10.042

49. Aggregation behavior of tri(trimethylsiloxy)silyl-propylpyridinnium chloride in non-aqueous solution

Author:
Jinglin Tan; Ziyan He; Dezhi Zhou
Source:
Colloids and surfaces 2019 v.577 pp. 464-470
ISSN:
0927-7757
Subject:
aqueous solutions; dimethyl sulfoxide; dioxane; electrical conductivity; light scattering; nuclear magnetic resonance spectroscopy; solvents; surface tension
Abstract:
... The effect of solvent (N,N-dimethylformamide, dimethyl sulfoxide, and 1,4-dioxane) on the micellization of tri(trimethylsiloxy)silylpropylpyridinnium chloride (Si₄PyrCl) in aqueous solution were investigated by surface tension, electrical conductivity, dynamic light scattering (DLS), and ¹H NMR. The solvents can obviously affect the aggregation behavior of Si₄PyrCl. However, Si₄PyrCl has excellent ...
DOI:
10.1016/j.colsurfa.2019.06.009

50. Aggregation induced emission of amino-thiol capped gold nanoparticles (GNPs) through metal-amino-coordination

Author:
Feng Huo; Yuhang Liu; Yuran Tang; Yongqin Cao; Chao Tan; Feng Yang; Xiupei Yang
Source:
Colloids and surfaces 2019 v.183 pp. 110335
ISSN:
0927-7765
Subject:
cadmium; fluorescence; gold; lead; ligands; manganese; metal ions; nanogold; reducing agents; silver; thiols; wavelengths; zinc
Abstract:
... Au₁₁(SG)₇ gold nanoparticles (GNPs) were synthesized from HAuCl₄ using thiol compounds containing an amino group to serve as both the reducing agent and the ligand. A three-dimensional network structure (…Au-SNH₂→Mⁿ⁺⟵H₂NS-Au…) was formed after the Mⁿ⁺ (Pb²⁺, Cd²⁺, Zn²⁺ and Ag⁺) coordinated the gold nanoparticles through the amino group in the thiol ligand, which promoted aurophilicity (…Au…Au…) an ...
DOI:
10.1016/j.colsurfb.2019.06.064