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You searched for: Journal name Colloids and surfaces Remove constraint Journal name: Colloids and surfaces
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1. 1D magnetic resonance imaging and low-field nuclear magnetic resonance relaxometry of water-based silica nanofluids

Author:
Sajjad Gholinezhad; Apostolos Kantzas; Steven L. Bryant
Source:
Colloids and surfaces 2022 v.640 pp. 128480
ISSN:
0927-7757
Subject:
emulsions; magnetism; nanofluids; nuclear magnetic resonance spectroscopy; silica
Abstract:
... The purpose of this research is to investigate 1-D Magnetic Resonance Imaging (MRI) and low-field Nuclear Magnetic Resonance (NMR) relaxation characteristics of silica nanofluids. The results show that presence of silica nanoparticles increases the MRI signal intensity and influences the NMR relaxation by shifting the relaxation peaks toward faster times compared to deionized water (DIW). Addition ...
DOI:
10.1016/j.colsurfa.2022.128480

2. 2D Ti3C2 decorated Z-scheme BiOIO3/g-C3N4 heterojunction for the enhanced photocatalytic CO2 reduction activity under visible light

Author:
Long-fei Hong; Rui-tang Guo; Ye Yuan; Xiang-yin Ji; Zhi-dong Lin; Xue-feng Yin; Wei-guo Pan
Source:
Colloids and surfaces 2022 v.639 pp. 128358
ISSN:
0927-7757
Subject:
carbon dioxide; energy; hot water treatment; light; nanosheets; photocatalysis; photocatalysts; solar energy
Abstract:
... The development of photocatalytic technology can not only reduce CO₂ emissions, but also realize the effective utilization of solar energy, thus alleviating the global energy crisis. In this work, BiOIO₃/g-C₃N₄ Z-scheme heterojunction modified by Ti₃C₂ nanosheets was designed and fabricated through hydrothermal method and electrostatic self-assembly strategy. The g-C₃N₄/BiOIO₃/Ti₃C₂ (4 wt%) photoc ...
DOI:
10.1016/j.colsurfa.2022.128358

3. 3-Aminopropyltriethoxysilane-directed formation of Au popcorns for colorimetric and SERS dual detection of cysteine

Author:
Jingwen Ba; Zhenzhen Huang; Wensheng Yang
Source:
Colloids and surfaces 2022 v.647 pp. 129033
ISSN:
0927-7757
Subject:
colorimetry; cysteine; gold; ligands
Abstract:
... In this work, we demonstrated a facile approach for preparation of Au popcorns by using 3-aminopropyltriethoxysilane (APTES) as ligand. It was identified that APTES monomers acted as ligand to tune activity of the gold precursor and direct the preferential growth of (111) plane of face-centered cubic (fcc) Au, resulting in the formation of Au particles popcorn-like in shape via random attachment f ...
DOI:
10.1016/j.colsurfa.2022.129033

4. 3D N-doped graphene/bismuth composite as an efficient catalyst for reduction of 4-nitrophenol

Author:
Xiaowen Liu; Yuanyuan Liu; Xin Zhang; Xiaodan Miao
Source:
Colloids and surfaces 2022 v.636 pp. 128098
ISSN:
0927-7757
Subject:
aerogels; aminophenols; bismuth; catalysts; catalytic activity; free radicals; graphene; microstructure; p-nitrophenol; pollutants; porosity; surface area
Abstract:
... In recent years, the development of low-cost and reusable green catalysts to reduce the organic pollutant of 4-nitrophenol (4-NP) into the utilizable intermediate of 4-aminophenol (4-AP) had attracted more and more attention. Herein, we reported a facile strategy to synthesize 3D N-doped graphene/bismuth (NGR/Bi) composites with efficient catalytic properties for 4-NP reduction. TGA exhibited NGR/ ...
DOI:
10.1016/j.colsurfa.2021.128098

5. 3D PCL/collagen nanofibrous medical dressing for one-time treatment of diabetic foot ulcers

Author:
Ting Chang; Huiyi Yin; Xi Yu; Lihuan Wang; Longfei Fan; John H. Xin; Hui Yu
Source:
Colloids and surfaces 2022 v.214 pp. 112480
ISSN:
0927-7765
Subject:
Escherichia coli; Staphylococcus aureus; antibacterial properties; biocompatibility; cephalexin; collagen; diabetic foot; doxycycline; halloysite; inflammation; metalloproteinases; nanofibers; nanotubes; water binding capacity
Abstract:
... Nanofibrous dressings exhibit high specific surface areas, good histocompatibility, enhanced wound healing, and reduced inflammation, which have broad technological implications for treating diabetic foot ulcers (DFUs). However, current nanofibrous dressings still suffer from high resistance to cell infiltration and multiple dressing changes. In this study, polycaprolactone (PCL) and collagen were ...
DOI:
10.1016/j.colsurfb.2022.112480

6. 3D bismuth/tin dual-doped palladium modified prism-folding layered graphene/MOF-74 composites as highly active electrocatalyst for ethylene glycol electrooxidation

Author:
Han Mo; Qi Ma; Yalan Hu; Hongying Liu; Yuting Zhong; Zhirui Wu; Liqun Zhou; Chuanqi Feng
Source:
Colloids and surfaces 2022 v.642 pp. 128725
ISSN:
0927-7757
Subject:
alloy nanoparticles; bismuth; durability; ethylene glycol; oxidation; palladium; tin
Abstract:
... A porous 3D prism-folding layered GO/MOF-74(Co) supported PdBiSn nanoalloys electrocatalyst (PdBiSn@GM-74) was synthesized via a facile assemble-reduction approach. Compared with Pd@GM-74, PdBi@GM-74, PdSn@GM-74, and commercial Pd/C, the trimetallic PdBiSn@GM-74 exhibits superior electrocatalytic activity and durability for ethylene glycol oxidation reaction (EGOR) in alkaline media, and the forwa ...
DOI:
10.1016/j.colsurfa.2022.128725

7. A DFT investigation of hydrogen adsorption and storage properties of Mg decorated IRMOF-16 structure

Author:
Numan Yuksel; Ahmet Kose; M. Ferdi Fellah
Source:
Colloids and surfaces 2022 v.641 pp. 128510
ISSN:
0927-7757
Subject:
adsorbents; adsorption; ambient temperature; density functional theory; electronic sensing; enthalpy; hydrogen
Abstract:
... Herein, the hydrogen storage property of the Mg decorated isoreticular metal organic framework-16 (IRMOF-16) is investigated by Density Functional Theory (DFT) method. The WB97XD hybrid method (including dispersion) was used for hydrogen adsorption on Mg decorated IRMOF-16 structure. It was determined that the adsorption enthalpy for the structure was negative (−4.2 kJ/mol) at room temperature and ...
DOI:
10.1016/j.colsurfa.2022.128510

8. A ZIF-8-based multifunctional intelligent drug release system for chronic osteomyelitis

Author:
Yongmei Ge; Kui Wang; Jiayi Liu; Ye Tian; Huili Li; HuiZhen Wang; Zhaowei Lin; Mingxia Qiu; Bin Tang
Source:
Colloids and surfaces 2022 v.212 pp. 112354
ISSN:
0927-7765
Subject:
bacterial infections; bone formation; bone resorption; cytokines; drugs; inflammation; osteomyelitis; pH
Abstract:
... Chronic osteomyelitis (COM) is an inflammatory bone disease caused by bacterial infection. Conventional treatment with antibiotics is prone to resistance and other side effects, and it is ineffective against inflammation caused by infection and bone loss. To treat COM comprehensively, based on the acidic microenvironment of osteomyelitis, we used ZIF-8 and celecoxib to construct a multifunctional ...
DOI:
10.1016/j.colsurfb.2022.112354

9. A carbon dioxide responsive fluorescent system based on micellar transformation

Author:
Yangyang Yan; Yufeng Li; Jie Wang; Lidong Li; Fu Tang
Source:
Colloids and surfaces 2022 v.641 pp. 128457
ISSN:
0927-7757
Subject:
carbon dioxide; carbonic acid; color; emulsions; fluorescence; fluorescent dyes; heat; oils; seed germination; solubilization; surfactants; transmittance
Abstract:
... Carbon dioxide (CO₂) responsive fluorescent systems mainly focus on modification of fluorophores with specific CO₂-responsive groups, the processes of which are usually tedious and time-consuming. Here, we report a facile strategy for fabricating CO₂-responsive fluorescent system by employing a surfactant, N,N-Dimethyl-1- dodecanamine (C₁₂A), to form an oil-in-water (O/W) emulsion and a fluorophor ...
DOI:
10.1016/j.colsurfa.2022.128457

10. A comparison of complexation induced brittleness in PEI/PSS and PEI/NaPSS single-step coatings

Author:
Jiaying Li; Ameya Krishna B; Gerard van Ewijk; Derk Jan van Dijken; Wiebe M. de Vos; Jasper van der Gucht
Source:
Colloids and surfaces 2022 v.648 pp. 129143
ISSN:
0927-7757
Subject:
anions; brittleness; cations; evaporation; pH; separation; volatile organic compounds
Abstract:
... In the field of coatings, there is a major trend towards the reduction of volatile organic compounds by developing water-based alternatives for traditional solvent-based paints. Complexes of oppositely charged polyelectrolytes have recently emerged as a promising candidate for such coatings. Recently, we developed an ammonia-evaporation induced complexation approach to form polyelectrolyte complex ...
DOI:
10.1016/j.colsurfa.2022.129143

11. A conductive bio-hydrogel with high conductivity and mechanical strength via physical filling of electrospinning polyaniline fibers

Author:
Jie Chen; Xiaohui Wang; Liping Dao; Lu Liu; Ying Yang; Jingwen Liu; Shuyi Wu; Yongqiang Cheng; Jie Pang
Source:
Colloids and surfaces 2022 v.637 pp. 128190
ISSN:
0927-7757
Subject:
heat stability; hydrogels; konjac mannan; lithium; polyaniline; tensile strength
Abstract:
... The development of bio-based conductive hydrogel has become the research frontier of flexible sensors. However, it is a challenge to prepare a simple method to prepare bio-based conductive hydrogel with excellent stability, tensile strength, and conductivity. Here, we show a simple strategy to prepare conductive, stretchable, and stable hydrogel (KKLN). The KKLN consists of the conductive polyanil ...
DOI:
10.1016/j.colsurfa.2021.128190

12. A deep look into the diverse surface speciation of the mono-molybdate/lepidocrocite system by ATR-IR and polarized ATR-IR spectroscopy

Author:
Romain Botella; Grégory Lefèvre
Source:
Colloids and surfaces 2022 v.647 pp. 129065
ISSN:
0927-7757
Subject:
adsorption; infrared spectroscopy; lepidocrocite; molybdates; pH; protonation
Abstract:
... The present study is focused on the adsorption of monomeric molybdate anions on the surface of lepidocrocite investigated by several infrared spectroscopy methods. To study the surface speciation of molybdates on lepidocrocite, the behavior of the anion at the interface upon increasing anion concentration (fixed pH) or decreasing pH (fixed concentration) was analyzed in situ. The obtained results ...
DOI:
10.1016/j.colsurfa.2022.129065

13. A deeper insight into the dual temperature- and pH-responsiveness of poly(vinylamine)-b-poly(N-isopropylacrylamide) double hydrophilic block copolymers

Author:
Clémence Nadal; Stéphane Gineste; Olivier Coutelier; Audrey Tourrette; Jean-Daniel Marty; Mathias Destarac
Source:
Colloids and surfaces 2022 v.641 pp. 128502
ISSN:
0927-7757
Subject:
X-radiation; ambient temperature; aqueous solutions; composite polymers; hydrophilicity; molecular weight; pH; polymerization; ultraviolet-visible spectroscopy
Abstract:
... Block copolymers based on poly(vinylamine) and poly(N-isopropylacrylamide), PVAmₘ-b-PNIPAMₙ, were synthetized by hydrazinolysis of poly(N-vinylphthalimide) based copolymers, PVPIₘ-b-PNIPAMₙ, obtained by RAFT polymerization. The effect of molar mass and pH on the thermoresponsive and aggregation properties of these polymers in aqueous solution was studied with UV–vis spectroscopy, differential scan ...
DOI:
10.1016/j.colsurfa.2022.128502

14. A dual redox system for enhancing the biodegradability of Fe-C-Cu composite scaffold

Author:
Sheng Li; Yuqing Mo; Chengde Gao; Cijun Shuai; Shuping Peng
Source:
Colloids and surfaces 2022 v.213 pp. 112431
ISSN:
0927-7765
Subject:
biocompatibility; biocomposites; biodegradability; biodegradation; cell viability; coculture; compression strength; corrosion; electron transfer; orthopedics; strength (mechanics)
Abstract:
... Fe-based biocomposites are emerging as temporary orthopedic implants due to natural biodegradability and high mechanical strength. Yet, the slow degradation kinetics restricts their biomedical applications. In this work, Cu-initiated redox system was established to accelerate the biodegradation of Fe-C composite scaffold prepared by selective laser melting. On the one hand, Cu induced micro-galvan ...
DOI:
10.1016/j.colsurfb.2022.112431

15. A facile and fast preparation of robust superhydrophobic brass mesh coated with Cu(OH)2 nanowires by pulse electrodeposition for continuous highly efficient oil/water separation

Author:
Yonghui Zhang; Jiangwen Liu; Ligeng Ouyang; Kai Zhang; Guie Xie; Shuzhen Jiang
Source:
Colloids and surfaces 2022 v.634 pp. 127968
ISSN:
0927-7757
Subject:
abrasion resistance; contact angle; electroplating; gravity; hydrophobicity; nanowires; oils; wastewater
Abstract:
... Effective separation of industrial oily wastewater and oil leak has long been treated as an important link to ensure rapid and harmonious development of economy and society. In this article, a robust superhydrophobic/superlipophilic brass mesh with micro/nano dual-scale structures was successfully fabricated by a fast pulse electrodeposition followed by a two-step simple and nonfluorinated immersi ...
DOI:
10.1016/j.colsurfa.2021.127968

16. A facile electrochemical sensor based on green synthesis of Cs/Ce-MOF for detection of tryptophan in human serum

Author:
Li Zhang; Ming Sun; Tao Jing; Shaobin Li; Huiyuan Ma
Source:
Colloids and surfaces 2022 pp. 129225
ISSN:
0927-7757
Subject:
blood serum; carbon electrodes; detection limit; energy; glass; humans; permeability; sensors (equipment); tryptophan
Abstract:
... A facile electrochemical sensor for tryptophan detection was designed and constructed by using Cs/Ce-MOF modified glass carbon electrode. The synthesis strategy of Cs/Ce-MOF composite not only greatly saved both energy and time costs, but also prevented the aggregation of Ce-MOF. The electrochemical sensor possessed excellent performance with wide linear range (0.25–331μM) and a low limit of detec ...
DOI:
10.1016/j.colsurfa.2022.129225

17. A generic model based on the properties of nanoparticles and cells for predicting cellular uptake

Author:
Bingqing Lu; A. Jan. Hendriks; Tom M. Nolte
Source:
Colloids and surfaces 2022 v.209 pp. 112155
ISSN:
0927-7765
Subject:
adsorption; cell membranes; energy; environmental health; humans; industry; permeability; risk assessment
Abstract:
... Nanoparticles (NPs) are widely used in industry and technology due to their small size and versatility, which makes them easy to enter organisms and pose threats to human and ecological health. Given the particularity and complex structure of NPs, statistical models alone cannot reliably predict uptake. Hence, we developed a generic model for predicting the cellular uptake of NPs with organic coat ...
DOI:
10.1016/j.colsurfb.2021.112155

18. A green and highly efficient method to deliver hydrophilic polyphenols of Salvia miltiorrhiza and Carthamus tinctorius for enhanced anti-atherosclerotic effect via metal-phenolic network

Author:
Qingfa Tang; Yankui Yi; Yao Chen; Ziming Zhuang; Feng Wang; Lu Zhang; Shenkun Wei; Yusheng Zhang; Yueqiusha Wang; Li Liu; Qiang Liu; Cuiping Jiang
Source:
Colloids and surfaces 2022 v.215 pp. 112511
ISSN:
0927-7765
Subject:
Carthamus tinctorius; Salvia miltiorrhiza; aldehydes; antioxidant activity; atherosclerosis; bioavailability; biocompatibility; coordination polymers; hydrophilicity; permeability; polyphenols; protective effect; solubility; therapeutics
Abstract:
... Salvia miltiorrhiza and Carthamus tinctorius are traditional Chinese medicines that have been widely used for the treatment of cardiovascular disease. Salvianic acid A (SAA), salvianic acid B (SAB), protocatechuic aldehyde (PCA) and hydroxysafflor yellow A (HSYA) are the major hydrophilic polyphenols of Salvia miltiorrhiza and Carthamus tinctorius, all of which have been documented as active compo ...
DOI:
10.1016/j.colsurfb.2022.112511

19. A hybrid mesoporous CuO@barley straw-derived SiO2 nanocomposite for adsorption and photocatalytic degradation of methylene blue from real wastewater

Author:
H. Gomaa; Mohamed A.T. Hussein; Mohamed M. Motawea; Abdelaziz M. Aboraia; Mohamed F. Cheira; Mohammed T. Alotaibi; Salah M. El-Bahy; Hazim M. Ali
Source:
Colloids and surfaces 2022 v.644 pp. 128811
ISSN:
0927-7757
Subject:
adsorbents; adsorption; agricultural wastes; barley straw; endothermy; methylene blue; nanocomposites; pH; photocatalysis; photocatalysts; photolysis; porous media; silica; temperature; thermodynamics; wastewater
Abstract:
... In this article, we have reported synthesizing a novel mesoporous CuO@barley straw derived SiO₂ (CuO@BSS) as a photocatalyst and adsorbent for methylene blue (MB) removal from aqueous media. Silica nanoparticle as a platform was prepared from barley straw, then modified by grafting of CuO nanoparticles. Our strategy represents a significant development in recycling agricultural waste, such as barl ...
DOI:
10.1016/j.colsurfa.2022.128811

20. A nanosheet-based combination emulsifier system for bulk-scale production of emulsions with elongated droplets and long-term stability

Author:
Nishat Anjum; Ya-Wen Chang; Siva A. Vanapalli
Source:
Colloids and surfaces 2022 v.640 pp. 128403
ISSN:
0927-7757
Subject:
droplets; emulsifiers; emulsions; nanosheets; neck; phosphates; surfactants; synergism; tetrabutylammonium compounds; water solubility
Abstract:
... In this study, we investigate the emulsion type, droplet morphology and emulsion stability that can be achieved using a novel combination emulsifier system which consists of water-soluble α-zirconium phosphate tetrabutyl ammonium (α-ZrP-TBA) nanosheets as the particulate emulsifier and Span 80 as the oil-soluble emulsifier, with the two emulsifiers present in distinct phases. We find that water-in ...
DOI:
10.1016/j.colsurfa.2022.128403