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21. High internal phase emulsion with double emulsion morphology and their templated porous polymer systems

Author:
Lei, Lei; Zhang, Qi; Shi, Shuxian; Zhu, Shiping
Source:
Journal of colloid and interface science 2016 v.483 pp. 232-240
ISSN:
0021-9797
Subject:
acrylamides; droplets; emulsifying; emulsions; micelles; oil-water interface; oils; polyacrylamide; polymerization; polystyrenes; stabilizers; styrene; surfactants; temperature; toluene
Abstract:
... This paper reports synthesis of the first high internal phase emulsion (HIPE) system with double emulsion (DE) morphology (HIPE-DE). HIPE is a highly concentrated but highly stable emulsion system, which has a dispersed/internal phase fraction over 74vol%. DE represents an emulsion system that hierarchically encapsulates two immiscible phases. The combination of HIPE and DE provides an efficient m ...
DOI:
10.1016/j.jcis.2016.08.034

22. Highly selective and sensitive response of 30.5 % of sprayed molybdenum trioxide (MoO3) nanobelts for nitrogen dioxide (NO2) gas detection

Author:
Mane, A.A.; Suryawanshi, M.P.; Kim, J.H.; Moholkar, A.V.
Source:
Journal of colloid and interface science 2016 v.483 pp. 220-231
ISSN:
0021-9797
Subject:
X-ray diffraction; ammonia; carbon dioxide; carbon monoxide; crystal structure; gases; glass; hydrogen sulfide; models; molybdenum; nitrogen dioxide; pyrolysis; scanning electron microscopy; sulfur dioxide; surface roughness; temperature
Abstract:
... The molybdenum trioxide (MoO3) thin films have been successfully deposited onto the glass substrates using chemical spray pyrolysis (CSP) deposition technique at various substrate temperatures ranging from 300°C to 450°C with an interval of 50°C. The effect of substrate temperature on the structural, morphological, optical and gas sensing properties of MoO3 thin films has been thoroughly investiga ...
DOI:
10.1016/j.jcis.2016.08.031

23. Investigation of the electro-spinnability of alginate solutions containing gold precursor HAuCl4

Author:
Anyfantis, George C.; Hajiali, Hadi; Mele, Elisa; Marras, Sergio; Carzino, Riccardo; Marini, Lara; Papadopoulou, Evie L.; Athanassiou, Athanassia
Source:
Journal of colloid and interface science 2016 v.483 pp. 60-66
ISSN:
0021-9797
Subject:
gold; nanofibers; nanogold; reducing agents; sodium alginate
Abstract:
... Alginate nanofibers with an average diameter of 75nm have been prepared by the electrospinning process. In addition, the spinnability of the solutions in the presence of the gold precursor HAuCl4 was investigated. At low concentrations of HAuCl4 well-formed nanofibers were produced, whereas as its concentration increases the nanofibrous mats present an increased number of bead-like defects. Herein ...
DOI:
10.1016/j.jcis.2016.08.037

24. Liquid crystal physical gel formed by cholesteryl stearate for light scattering display material

Author:
Leaw, W.L.; Mamat, C.R.; Triwahyono, S.; Jalil, A.A.; Bidin, N.
Source:
Journal of colloid and interface science 2016 v.483 pp. 41-48
ISSN:
0021-9797
Subject:
electron paramagnetic resonance spectroscopy; gelation; gels; light intensity; light microscopy; light scattering; liquid crystals; micropores; scanning electron microscopy; stearic acid
Abstract:
... A liquid crystal physical gel was prepared by the self-assembly of cholesteryl stearate in a nematic liquid crystal, 4-cyano-4′-pentylbiphenyl. The electro-optical properties were tuned by varying the gelator concentration and the gelation conditions. Polarized optical microscopy revealed that cholesteric cholesteryl stearate induced chiral nematic phase in 4-cyano-4′-pentylbiphenyl during the gel ...
DOI:
10.1016/j.jcis.2016.08.020

25. Mesoporous transition metal oxides quasi-nanospheres with enhanced electrochemical properties for supercapacitor applications

Author:
Wang, Lu; Duan, Guorong; Zhu, Junwu; Chen, Shen-Ming; Liu, Xiao-heng; Palanisamy, Selvakumar
Source:
Journal of colloid and interface science 2016 v.483 pp. 73-83
ISSN:
0021-9797
Subject:
cobalt oxide; electrochemistry; electrodes; electrolytes; manganese dioxide; nanospheres; nickel oxide; particle size; porosity; porous media; silica; surface area
Abstract:
... In this report, we obtain mesoporous transition metal oxides quasi-nanospheres (includes MnO2, NiO, and Co3O4) by utilizing mesoporous silica nanospheres as a template for high-performance supercapacitor electrodes. All samples have a large specific surface area of approximately 254–325m²g⁻¹ and a relatively narrow pore size distribution in the region of 7nm. Utilization of a nanosized template re ...
DOI:
10.1016/j.jcis.2016.07.068

26. Microwave synthesis and photocatalytic activity of Tb3+ doped BiVO4 microcrystals

Author:
Wang, Ying; Liu, Fuyang; Hua, Yingjie; Wang, Chongtai; Zhao, Xudong; Liu, Xiaoyang; Li, Hongdong
Source:
Journal of colloid and interface science 2016 v.483 pp. 307-313
ISSN:
0021-9797
Subject:
crystals; hot water treatment; irradiation; methylene blue; microwave treatment; photocatalysis; terbium
Abstract:
... Tb³⁺ doped BiVO4 has been successfully synthesized by a simple microwave-assisted hydrothermal method at 140°C for 30min. The structure, morphology and optical property of the Tb³⁺ doped BiVO4 products have been systematically investigated. This study indicates that the incorporation of Tb³⁺ could induce the conversion of structure from monoclinic to tetragonal for BiVO4. Furthermore, the as-obtai ...
DOI:
10.1016/j.jcis.2016.08.048

27. Moxifloxacin loaded gelatin nanoparticles for ocular delivery: Formulation and in-vitro, in-vivo evaluation

Author:
Mahor, Alok; Prajapati, Sunil Kumar; Verma, Amita; Gupta, Rishikesh; Iyer, Arun K.; Kesharwani, Prashant
Source:
Journal of colloid and interface science 2016 v.483 pp. 132-138
ISSN:
0021-9797
Subject:
antibacterial properties; antibiotics; biodegradability; cornea; drugs; gelatin; light scattering; models; moxifloxacin; nanoparticles; particle size; polymers; rabbits
Abstract:
... The current research focuses on developing positively charged gelatin nanoparticles loaded with moxifloxacin for its effective ocular delivery and controlled release in corneal eye layer. We selected type A gelatin because of its biodegradable and non-toxic nature as the polymer of choice for fabricating the nanoparticles by a modified two step desolvation technique. The produced nanoparticles wer ...
DOI:
10.1016/j.jcis.2016.08.018

28. Multifunctional catalysts based on carbon nanotubes and titanate nanotubes for oxidation of organic compounds in biphasic systems

Author:
Santos, S.R.A.; Jardim, I.S.; Bicalho, H.A.; Binatti, I.; Sousa, E.M.B.; Peres, A.M.; Resende, R.R.; Lorençon, E.
Source:
Journal of colloid and interface science 2016 v.483 pp. 211-219
ISSN:
0021-9797
Subject:
X-ray diffraction; benzyl alcohol; carbon nanotubes; catalysts; catalytic activity; emulsions; hydrogen peroxide; hydrophilicity; hydrophobicity; liquids; nanocomposites; oils; oxidants; oxidation; scanning electron microscopy; sodium hydroxide; thermogravimetry; titanium dioxide; transmission electron microscopy
Abstract:
... Amphiphilic catalysts composed of carbon nanotubes (CNTs) and titanate nanotubes (TiNTs) have been successfully synthesized by refluxing anatase TiO2 and functionalised CNTs in concentrated NaOH solution. The prepared materials were characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, thermogravimetric analysis (TGA), and N2 physisorption isotherms. T ...
DOI:
10.1016/j.jcis.2016.08.025

29. Size-dependent interactions of silica nanoparticles with a flat silica surface

Author:
Seo, Jihoon; Kim, Joo Hyun; Lee, Myoungjae; Moon, Jinok; Yi, Dong Kee; Paik, Ungyu
Source:
Journal of colloid and interface science 2016 v.483 pp. 177-184
ISSN:
0021-9797
Subject:
adsorption; energy; hydrogen bonding; ionic strength; isoelectric point; nanoparticles; pH; quartz crystal microbalance; silica; sodium chloride; zeta potential
Abstract:
... We have investigated the surface chemistry of SiO2 nanoparticles (NPs) with different sizes and their corresponding interactions with a flat substrate of surface curvature ∼0. As the size of the NPs increases, the SiO2 surface is increasingly covered with H-bonded silanol groups, thereby increasing the ζ-potential and shifting the isoelectric point higher in pH. Interactions between the SiO2 NPs a ...
DOI:
10.1016/j.jcis.2016.08.041

30. Strongly coupled polyaniline/graphene hybrids with much enhanced capacitance performance

Author:
Xi, Xin; Liu, Ruili; Huang, Tao; Xu, Yi; Wu, Dongqing
Source:
Journal of colloid and interface science 2016 v.483 pp. 34-40
ISSN:
0021-9797
Subject:
capacitance; diamines; electrodes; energy density; graphene; graphene oxide; nanofibers; polymers
Abstract:
... To enforce the interactions between polyaniline (PANI) and graphene, a facile strategy is developed in this work to fabricate the strongly coupled hybrids of PANI nanofibers and graphene (named as PAGs) by introducing different diamines to functionalize graphene oxide. As the electrode material in a two-electrode supercapacitor (SC), the ethylenediamine-functionalized hybrid (PAG-EDA) deliveries a ...
DOI:
10.1016/j.jcis.2016.08.008

31. Surface properties of a single perfluoroalkyl group on water surfaces studied by surface potential measurements

Author:
Shimoaka, Takafumi; Tanaka, Yuki; Shioya, Nobutaka; Morita, Kohei; Sonoyama, Masashi; Amii, Hideki; Takagi, Toshiyuki; Kanamori, Toshiyuki; Hasegawa, Takeshi
Source:
Journal of colloid and interface science 2016 v.483 pp. 353-359
ISSN:
0021-9797
Subject:
chemical bonding; moieties; perfluorocarbons; phase transition; temperature
Abstract:
... A discriminative study of a single perfluoroalkyl (Rf) group from a bulk material is recently recognized to be necessary toward the total understanding of Rf compounds based on a primary chemical structure. The single molecule and the bulk matter have an interrelationship via an intrinsic two-dimensional (2D) aggregation property of an Rf group, which is theorized by the stratified dipole-arrays ( ...
DOI:
10.1016/j.jcis.2016.08.055

32. Synthesis and application of a new carboxylated cellulose derivative. Part I: Removal of Co2+, Cu2+ and Ni2+ from monocomponent spiked aqueous solution

Author:
Teodoro, Filipe Simões; Ramos, Stela Nhandeyara do Carmo; Elias, Megg Madonyk Cota; Mageste, Aparecida Barbosa; Ferreira, Gabriel Max Dias; da Silva, Luis Henrique Mendes; Gil, Laurent Frédéric; Gurgel, Leandro Vinícius Alves
Source:
Journal of colloid and interface science 2016 v.483 pp. 185-200
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; anhydrides; aqueous solutions; calorimetry; carboxylation; carboxylic acids; cellulose; cobalt; copper; desorption; energy-dispersive X-ray analysis; esterification; metal ions; models; nickel; nuclear magnetic resonance spectroscopy; pH; porosity; scanning electron microscopy; sorption isotherms; surface area; thermogravimetry; titration; weight gain
Abstract:
... A new carboxylated cellulose derivative (CTA) was prepared from the esterification of cellulose with 1,2,4-Benzenetricarboxylic anhydride. CTA was characterized by percent weight gain (pwg), amount of carboxylic acid groups (nCOOH), elemental analysis, FTIR, TGA, solid-state ¹³C NMR, X-ray diffraction (DRX), specific surface area, pore size distribution, SEM and EDX. The best CTA synthesis conditi ...
DOI:
10.1016/j.jcis.2016.08.004

33. Synthesis of novel AuPd nanoparticles decorated one-dimensional ZnO nanorod arrays with enhanced photoelectrochemical water splitting activity

Author:
Lu, Yan; Zhang, Junlong; Ge, Lei; Han, Changcun; Qiu, Ping; Fang, Siman
Source:
Journal of colloid and interface science 2016 v.483 pp. 146-153
ISSN:
0021-9797
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; alloy nanoparticles; electric current; hot water treatment; irradiation; lighting; microstructure; nanorods; photocatalysis; photocatalysts; physicochemical properties; reflectance spectroscopy; scanning electron microscopy; silver; silver chloride; solar energy; transmission electron microscopy; zinc oxide
Abstract:
... The vertically aligned one-dimensional (1D) ZnO nanorod arrays decorated with AuPd alloy nanoparticles have been synthesized with ZnO nanorod arrays as template via a mild hydrothermal method. In this work, the as-prepared AuPd/ZnO nanorod arrays demonstrated high light-harvesting efficiency. The microstructures, morphologies and chemical properties of the obtained AuPd/ZnO composite photocatalyst ...
DOI:
10.1016/j.jcis.2016.08.022

34. Synthesis of various 3D porous gold-based alloy nanostructures with branched shapes

Author:
Swiatkowska-Warkocka, Zaneta; Pyatenko, Alexander; Koshizaki, Naoto; Kawaguchi, Kenji
Source:
Journal of colloid and interface science 2016 v.483 pp. 281-286
ISSN:
0021-9797
Subject:
acid treatment; alloys; catalytic activity; gold; iron oxides; irradiation; magnetic properties; nanogold; nanoparticles; solvents; surface area
Abstract:
... This paper presents a facile and flexible synthesis platform for various 3D porous gold-iron nanostructures based on selective laser heating of colloidal nanoparticles and selective acid treatment. The presented approach allows to create porous gold-based nanostructures with different morphologies. In addition, for the first time, our studies indicate that various nanoarchitectures (brain-like, fl ...
DOI:
10.1016/j.jcis.2016.08.051

35. Tailoring barrier properties of thermoplastic corn starch-based films (TPCS) by means of a multilayer design

Author:
Fabra, María José; López-Rubio, Amparo; Cabedo, Luis; Lagaron, Jose M.
Source:
Journal of colloid and interface science 2016 v.483 pp. 84-92
ISSN:
0021-9797
Subject:
biopolyesters; coatings; corn starch; food-packaging materials; oxygen; permeability; polyhydroxybutyrate; polylactic acid; scanning electron microscopy; thermoplastics; water vapor
Abstract:
... This work compares the effect of adding different biopolyester electrospun coatings made of polycaprolactone (PCL), polylactic acid (PLA) and polyhydroxybutyrate (PHB) on oxygen and water vapour barrier properties of a thermoplastic corn starch (TPCS) film. The morphology of the developed multilayer structures was also examined by Scanning Electron Microscopy (SEM). Results showed a positive linea ...
DOI:
10.1016/j.jcis.2016.08.021

36. The effects of intermolecular interactions on the physical properties of organogels in edible oils

Author:
Lupi, Francesca R.; Greco, Valeria; Baldino, Noemi; de Cindio, Bruno; Fischer, Peter; Gabriele, Domenico
Source:
Journal of colloid and interface science 2016 v.483 pp. 154-164
ISSN:
0021-9797
Subject:
calorimetry; cooking fats and oils; fatty acids; fatty alcohols; fractal dimensions; gelation; hydrogen bonding; infrared spectroscopy; light microscopy; microstructure; models; monoacylglycerols; nuclear magnetic resonance spectroscopy; organogels; rheology; temperature; van der Waals forces
Abstract:
... The microstructure of organogels based on monoglycerides of fatty acids (MAGs) and policosanol and on different edible oils was investigated by using different techniques (calorimetry, nuclear magnetic resonance, infrared spectroscopy, rheology, polarized light microscopy) towards a better understanding and control of the oil gelation phenomena. Dynamic moduli were related via a fractal model to m ...
DOI:
10.1016/j.jcis.2016.08.009

37. The specific sorption of Np(V) on the corundum (α-Al2O3) surface in the presence of trivalent lanthanides Eu(III) and Gd(III): A batch sorption and XAS study

Author:
Virtanen, S.; Bok, F.; Ikeda-Ohno, A.; Rossberg, A.; Lützenkirchen, J.; Rabung, T.; Lehto, J.; Huittinen, N.
Source:
Journal of colloid and interface science 2016 v.483 pp. 334-342
ISSN:
0021-9797
Subject:
X-ray absorption spectroscopy; aluminum oxide; europium; gadolinium; models; neptunium; pH; sorption
Abstract:
... The sorption of pentavalent neptunium, Np(V), on corundum (α-Al2O3) was investigated in the absence and presence of trivalent europium or gadolinium as a competing element under CO2-free conditions. The objective of this study was to investigate how a trivalent metal ion with a higher charge than that of the neptunyl(V) ion would affect the sorption of Np(V) when allowed to adsorb on the mineral s ...
DOI:
10.1016/j.jcis.2016.08.035

38. Towards efficient visible-light active photocatalysts: CdS/Au sensitized TiO2 nanotube arrays

Author:
Nguyen, VanManh; Cai, Qingyun; Grimes, Craig A.
Source:
Journal of colloid and interface science 2016 v.483 pp. 287-294
ISSN:
0021-9797
Subject:
adsorption; gold; lighting; nanogold; nanotubes; photocatalysts; quantum dots; titanium dioxide
Abstract:
... A visible-light active photocatalyst, CdS/Au/TiO2 nanotube array (NTA) photoelectrode, was prepared by electrodeposition of Au nanoparticles onto TiO2 NTA with subsequent deposition of visible-light absorbable 2.4eV band-gap CdS quantum dots using successive ion layer adsorption and reaction (SILAR). The Au nanoparticles here act as electron sinks facilitating charge carrier separation. Under AM1. ...
DOI:
10.1016/j.jcis.2016.08.042

39. Ultrafine MnO2 nanoparticles decorated on graphene oxide as a highly efficient and recyclable catalyst for aerobic oxidation of benzyl alcohol

Author:
Hu, Zonggao; Zhao, Yafei; Liu, Jindun; Wang, Jingtao; Zhang, Bing; Xiang, Xu
Source:
Journal of colloid and interface science 2016 v.483 pp. 26-33
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; ambient temperature; benzaldehyde; benzyl alcohol; catalysts; catalytic activity; desorption; graphene oxide; manganese dioxide; nanoparticles; oxidation; particle size; recycling; transmission electron microscopy
Abstract:
... The highly active and selective aerobic oxidation of aromatic alcohols over earth-abundant, inexpensive and recyclable catalysts is highly desirable. We fabricated herein MnO2/graphene oxide (GO) composites by a facile in-situ growth approach at room temperature and used them in selective aerobic oxidation of benzyl alcohol to benzaldehyde. TEM, XRD, FTIR, XPS and N2 adsorption/desorption analysis ...
DOI:
10.1016/j.jcis.2016.08.010

40. Ultra-small rhenium nanoparticles immobilized on DNA scaffolds: An excellent material for surface enhanced Raman scattering and catalysis studies

Author:
Anantharaj, S.; Sakthikumar, K.; Elangovan, Ayyapan; Ravi, G.; Karthik, T.; Kundu, Subrata
Source:
Journal of colloid and interface science 2016 v.483 pp. 360-373
ISSN:
0021-9797
Subject:
DNA; Raman spectroscopy; ambient temperature; ammonium; borohydrides; catalysts; catalytic activity; methylene blue; mixing; monitoring; nanoparticles; nitroanilines; oxides; p-nitrophenol; phenol; rhenium
Abstract:
... Highly Sensitive and ultra-small Rhenium (Re) metal nanoparticles (NPs) were successfully stabilized in water by the staging and fencing action of the versatile biomolecule DNA that resulted in two distinct aggregated chain-like morphologies with average grain sizes of 1.1±0.1nm and 0.7±0.1nm for the very first time within a minute of reaction time. Re NPs are formed by the borohydride reduction o ...
DOI:
10.1016/j.jcis.2016.08.046