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You searched for: Journal Journal of colloid and interface science Remove constraint Journal: Journal of colloid and interface science Publication Year 2016 Remove constraint Publication Year: 2016 Source 2016 v.475 Remove constraint Source: 2016 v.475
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1. A facile one-pot method to synthesize ultrasmall core-shell superparamagnetic and upconversion nanoparticles

Author:
Cheng, Qian; Guo, Hongxuan; Li, Yu; Liu, Shouxin; Sui, Jiehe; Cai, Wei
Source:
Journal of colloid and interface science 2016 v.475 pp. 1-7
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; dispersibility; luminescence; nanoparticles; neoplasms; solvents; stabilizers; thermal degradation; transmission electron microscopy
Abstract:
... Ultrasmall core-shell Fe3O4@NaYF4:Yb³⁺/Er³⁺ nanoparticles with bifunctional properties have been successfully synthesized via one pot thermolysis method using oleylamine as both solvent and stabilizer. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), upconversion (UC) luminescence spectra and t ...
DOI:
10.1016/j.jcis.2016.04.040

2. A simple electrochemical platform for detection of nitrobenzene in water samples using an alumina polished glassy carbon electrode

Author:
Thirumalraj, Balamurugan; Palanisamy, Selvakumar; Chen, Shen-Ming; Thangavelu, Kokulnathan; Periakaruppan, Prakash; Liu, Xiao-Heng
Source:
Journal of colloid and interface science 2016 v.475 pp. 154-160
ISSN:
0021-9797
Subject:
X-ray photoelectron spectroscopy; aluminum oxide; cost effectiveness; detection limit; electrochemistry; glassy carbon electrode; metal ions; nitrobenzenes; scanning electron microscopy
Abstract:
... In this work, we report a selective electrochemical sensing of nitrobenzene (NB) using an alumina (γ-Al2O3) polished glassy carbon electrode (GCE) for the first time. The scanning electron microscopy studies confirm the presence of alumina particles on the GCE surface. X-ray photoelectron spectroscopy studies reveal that the utilized alumina is γ-Al2O3. The alumina polished GCE shows an enhanced s ...
DOI:
10.1016/j.jcis.2016.04.042

3. Biomimetic anchors applied to the host-guest antifouling functionalization of titanium substrates

Author:
Cai, Xiao Yan; Li, Ning Ning; Chen, Jiu Cun; Kang, En-Tang; Xu, Li Qun
Source:
Journal of colloid and interface science 2016 v.475 pp. 8-16
ISSN:
0021-9797
Subject:
Escherichia coli; X-ray photoelectron spectroscopy; adhesion; adsorption; bacterial adhesion; biomimetics; cattle; contact angle; dopamine; elemental composition; fibrinogen; hydrophilicity; hydrophobicity; polymers; titanium; titanium dioxide; zwitterions
Abstract:
... A biomimetic strategy was developed for the construction of antifouling titanium oxide (Ti(oxide)) surfaces based on host-guest interactions. Two catecholic derivatives, dopamine 4-(phenylazo)benzamide (AZODopa) and dopamine 1-adamantanecarboxamide (AdaDopa) were synthesized and immobilized onto the Ti(oxide) surfaces. The guest molecules-anchored Ti(oxide) surfaces were further functionalized wit ...
DOI:
10.1016/j.jcis.2016.04.034

4. Biosynthesis of titanium dioxide nanoparticles using Bacillus amyloliquefaciens culture and enhancement of its photocatalytic activity for the degradation of a sulfonated textile dye Reactive Red 31

Author:
Khan, Razia; Fulekar, M.H.
Source:
Journal of colloid and interface science 2016 v.475 pp. 184-191
ISSN:
0021-9797
Subject:
Bacillus amyloliquefaciens; Fourier transform infrared spectroscopy; X-ray diffraction; alpha-amylase; biosynthesis; chemical degradation; crystallites; dyes; energy-dispersive X-ray analysis; enzyme activity; extracellular enzymes; nanoparticles; nanosilver; photocatalysis; platinum; polyacrylamide gel electrophoresis; silver; titanium dioxide; transmission electron microscopy; ultraviolet radiation; zinc
Abstract:
... The present study aims at exploiting Bacillus amyloliquefaciens for the biosynthesis of titanium dioxide nanoparticles and also investigates role of bacterial enzymes in the biosynthesis of titanium dioxide nanoparticles. Bacterial synthesized as well as metal doped titanium dioxide nanoparticles were characterized by X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Tran ...
DOI:
10.1016/j.jcis.2016.05.001

5. Development of a nanosphere adsorbent for the removal of fluoride from water

Author:
Zhang, Kaisheng; Wu, Shibiao; He, Junyong; Chen, Liang; Cai, Xingguo; Chen, Kai; Li, Yulian; Sun, Bai; Lin, Dongyue; Liu, Guqing; Kong, Lingtao; Liu, Jinhuai
Source:
Journal of colloid and interface science 2016 v.475 pp. 17-25
ISSN:
0021-9797
Subject:
adsorbents; adsorption; anions; carbonates; chlorides; drinking water; electrostatic interactions; endothermy; fluorides; models; moieties; nanospheres; nitrates; pH; phosphates; sorption isotherms; sulfates; thermodynamics
Abstract:
... A new uniform-sized CeCO3OH nanosphere adsorbent was developed, and tested to establish its efficiency, using kinetic and thermodynamic studies, for fluoride removal. The results demonstrated that the CeCO3OH nanospheres exhibited much high adsorption capacities for fluoride anions due to electrostatic interactions and exchange of the carbonate and hydroxyl groups on the adsorbent surface with flu ...
DOI:
10.1016/j.jcis.2016.04.037

6. Dual-responsive colloidal microcapsules based on host-guest interaction on solid templates

Author:
Li, Guangyu; Dong, Zhirui; Zhu, Yuting; Tong, Weijun; Gao, Changyou
Source:
Journal of colloid and interface science 2016 v.475 pp. 196-202
ISSN:
0021-9797
Subject:
drugs; microencapsulation; nanoparticles; pH; polyethyleneimine; polystyrenes
Abstract:
... Colloidal microcapsules (MCs) have received considerable attention in the fields of microencapsulation, drug delivery as well as microreactors due to their unique nanoparticles-composed structure. In this study, dual-responsive colloidal MCs based on host-guest interaction were successfully fabricated via a layer-by-layer assembly method on sacrificial solid templates. Ferrocene-modified polyethyl ...
DOI:
10.1016/j.jcis.2016.04.050

7. Effect of molecular exchange on water droplet size analysis as determined by diffusion NMR: The W/O/W double emulsion case

Author:
Vermeir, Lien; Sabatino, Paolo; Balcaen, Mathieu; Declerck, Arnout; Dewettinck, Koen; Martins, José C.; Guthausen, Gisela; Van der Meeren, Paul
Source:
Journal of colloid and interface science 2016 v.475 pp. 57-65
ISSN:
0021-9797
Subject:
ambient temperature; cations; droplet size; emulsions; nuclear magnetic resonance spectroscopy; oils; permeability; tetramethylammonium compounds; water solubility
Abstract:
... The accuracy of the inner water droplet size determination of W/O/W emulsions upon water diffusion measurement by diffusion NMR was evaluated. The resulting droplet size data were compared to the results acquired from the diffusion measurement of a highly water soluble marker compound with low permeability in the oil layer of a W/O/W emulsion, which provide a closer representation of the actual dr ...
DOI:
10.1016/j.jcis.2016.04.029

8. Facet-selective photodeposition of gold nanoparticles on faceted ZnO crystals for visible light photocatalysis

Author:
Wang, Xuewen; Wang, Wuyou; Miao, Yuanquan; Feng, Gang; Zhang, Rongbin
Source:
Journal of colloid and interface science 2016 v.475 pp. 112-118
ISSN:
0021-9797
Subject:
absorption; anisotropy; crystals; gold; hot water treatment; irradiation; nanogold; nanoparticles; photocatalysis; zinc oxide
Abstract:
... Hexagonal prism-like ZnO crystals dominated with polar facets were synthesized using a hydrothermal method. The Gold (Au) nanoparticles were selectively photodeposited on the polar surfaces of faceted ZnO crystals as a result of anisotropic photocatalytic activities of the polar and nonpolar facets. The size of Au nanoparticles uniformly dispersed on the polar facets increased with increasing Au-l ...
DOI:
10.1016/j.jcis.2016.04.048

9. Facile synthesis of tin phosphite nanosheets via exfoliated bulk crystals: Electronic structure and piezoelectric property

Author:
Song, Jun-Ling; Zhang, Xi-Rui; Lu, Rui-Feng
Source:
Journal of colloid and interface science 2016 v.475 pp. 192-195
ISSN:
0021-9797
Subject:
absorbance; boron nitride; colloids; crystals; density functional theory; ethanol; nanosheets; tin; ultrasonic treatment
Abstract:
... Tin phosphite nanosheets were synthesized by a facile exfoliation method. SnHPO3 nanosheets with a thickness of ∼2.6nm readily form a stable colloidal suspension in ethanol using ultrasonic method. Structures and optical properties of the obtained nanosheets were investigated. The prepared SnHPO3 nanosheets exhibit an obvious blue-shift in UV absorbance compared with bulk SnHPO3 crystal materials. ...
DOI:
10.1016/j.jcis.2016.04.052

10. Functionalized magnetite particles for adsorption of colloidal noble metal nanoparticles

Author:
Lopes, Joana L.; Marques, Karine L.; Girão, Ana V.; Pereira, Eduarda; Trindade, Tito
Source:
Journal of colloid and interface science 2016 v.475 pp. 96-103
ISSN:
0021-9797
Subject:
adsorption; colloids; distillates; gold; magnetism; magnetite; nanogold; nanoparticles; nanosilver; palladium; platinum; silver; sorbents
Abstract:
... Magnetite (inverse spinel type) particles have been surface-modified with siliceous shells enriched in dithiocarbamate groups. The deposition of colloidal noble metal nanoparticles (Au, Ag, Pt, Pd) onto the modified magnetites can be performed by treating the respective hydrosols with the magnetic sorbents, thus allowing their uptake from water under a magnetic gradient. In particular, for Au coll ...
DOI:
10.1016/j.jcis.2016.04.046

11. Green synthesized gold nanoparticles decorated graphene oxide for sensitive determination of chloramphenicol in milk, powdered milk, honey and eye drops

Author:
Karthik, R.; Govindasamy, Mani; Chen, Shen-Ming; Mani, Veerappan; Lou, Bih-Show; Devasenathipathy, Rajkumar; Hou, Yu-Shen; Elangovan, A.
Source:
Journal of colloid and interface science 2016 v.475 pp. 46-56
ISSN:
0021-9797
Subject:
Bischofia javanica; X-ray diffraction; antibiotic residues; chloramphenicol; composite films; composite materials; dried milk; electrochemistry; electrodes; food safety; gold; graphene oxide; honey; leaves; milk; nanogold; reducing agents; salts; storage; storage quality
Abstract:
... A simple and rapid green synthesis using Bischofia javanica Blume leaves as reducing agent was developed for the preparation of gold nanoparticles (AuNPs). AuNPs decorated graphene oxide (AuNPs/GO) was prepared and employed for the sensitive amperometric determination of chloramphenicol. The green biosynthesis requires less than 40s to reduce gold salts to AuNPs. The formations of AuNPs and AuNPs/ ...
DOI:
10.1016/j.jcis.2016.04.044

12. Hollow periodic mesoporous organosilica nanospheres by a facile emulsion approach

Author:
Ma, Xiaobo; Zhang, Junjie; Dang, Meng; Wang, Jin; Tu, Zenzen; Yuwen, Lihui; Chen, Guotao; Su, Xiaodan; Teng, Zhaogang
Source:
Journal of colloid and interface science 2016 v.475 pp. 66-71
ISSN:
0021-9797
Subject:
cell viability; cytotoxicity; emulsions; hemolysis; nanospheres; porous media; surface area
Abstract:
... Periodic mesoporous organosilicas (PMOs) with homogeneously incorporated organic groups, highly ordered mesopores, and controllable morphology have attracted increasing attention. In this work, one-step emulsion approach for preparation of hollow periodic mesoporous organosilica (HPMO) nanospheres has been established. The method is intrinsically simple and does not require any sacrificial templat ...
DOI:
10.1016/j.jcis.2016.04.026

13. Impact of gravity, collector surface roughness and fracture orientation on colloid retention kinetics in an artificial fracture

Author:
Stoll, M.; Huber, F.M.; Darbha, G.K.; Schill, E.; Schäfer, T.
Source:
Journal of colloid and interface science 2016 v.475 pp. 171-183
ISSN:
0021-9797
Subject:
atomic force microscopy; carboxylation; colloids; fluorescence; glass; granodiorite; gravity; ionic strength; laminar flow; mathematical models; polystyrenes; sodium chloride; surface roughness
Abstract:
... The interaction of monodisperse fluorescent carboxylated polystyrene colloids (25nm and 1000nm diameter) with a cut granodiorite surface (Grimsel granodiorite; Switzerland) and with acrylic glass is investigated both experimentally and numerically. Colloid transport experiments are conducted in a parallel plate type fracture flow cell with an aperture of 0.75mm at pH5 under low ionic strength (1mM ...
DOI:
10.1016/j.jcis.2016.04.045

14. Influence of metal oxides on the adsorption characteristics of PPy/metal oxides for Methylene Blue

Author:
Chen, Jie; Feng, Jiangtao; Yan, Wei
Source:
Journal of colloid and interface science 2016 v.475 pp. 26-35
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; aluminum oxide; desorption; iron oxides; methylene blue; models; polymerization; scanning electron microscopes; scanning electron microscopy; silica; surface area; texture; thermogravimetry; zeta potential
Abstract:
... In this paper, the pure PPy and PPy/metal oxide composites including PPy/SiO2, PPy/Al2O3, and PPy/Fe3O4 as well as PPy coated commercial SiO2 and Al2O3 (PPy/SiO2(C) and PPy/Al2O3(C)) were successfully synthetized via chemical oxidative polymerization in acid aqueous medium to investigate the influence of metal oxides on adsorption capacity and their adsorption characteristics for Methylene Blue (M ...
DOI:
10.1016/j.jcis.2016.04.017

15. Interactions of titania based nanoparticles with silica and green-tea: Photo-degradation and -luminescence

Author:
Verma, Rajni; Awasthi, Aditi; Singh, Punita; Srivastava, Ritu; Sheng, Huaping; Wen, Jianguo; Miller, Dean J.; Srivastava, Avanish K.
Source:
Journal of colloid and interface science 2016 v.475 pp. 82-95
ISSN:
0021-9797
Subject:
coatings; energy-dispersive X-ray analysis; epigallocatechin gallate; green tea; methyl orange; nanoparticles; photocatalysis; photolysis; reactive oxygen species; silica; sunscreens; titanium dioxide; transmission electron microscopy
Abstract:
... An effective way to modify the photocatalytic activity of both anatase and rutile TiO2 nanoparticles by coating the surface with either an inorganic (SiO2/silica) or organic (green-tea) layer using a chemical approach is demonstrated. Tetraethyl orthosilicate (TEOS) was used to cover the surface of TiO2 with silica which facilitates the inhibition of photocatalytic activity, ensuring its applicati ...
DOI:
10.1016/j.jcis.2016.04.038

16. Membrane interactions of mesoporous silica nanoparticles as carriers of antimicrobial peptides

Author:
Braun, Katharina; Pochert, Alexander; Lindén, Mika; Davoudi, Mina; Schmidtchen, Artur; Nordström, Randi; Malmsten, Martin
Source:
Journal of colloid and interface science 2016 v.475 pp. 161-170
ISSN:
0021-9797
Subject:
antimicrobial peptides; antimicrobial properties; coatings; erythrocytes; humans; nanoparticles; porosity; porous media; proteinases; silica; toxicity
Abstract:
... Membrane interactions are critical for the successful use of mesoporous silica nanoparticles as delivery systems for antimicrobial peptides (AMPs). In order to elucidate these, we here investigate effects of nanoparticle charge and porosity on AMP loading and release, as well as consequences of this for membrane interactions and antimicrobial effects. Anionic mesoporous silica particles were found ...
DOI:
10.1016/j.jcis.2016.05.002

17. Microfluidic synthesis of dye-loaded polycaprolactone-block-poly(ethylene oxide) nanoparticles: Insights into flow-directed loading and in vitro release for drug delivery

Author:
Bains, Aman; Wulff, Jeremy E.; Moffitt, Matthew G.
Source:
Journal of colloid and interface science 2016 v.475 pp. 136-148
ISSN:
0021-9797
Subject:
crystal structure; drugs; fluorescent dyes; hydrophobicity; models; nanoparticles; perchlorates; screening; water content
Abstract:
... Using the fluorescent probe dye 1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate (DiI) as a surrogate for hydrophobic drugs, we investigate the effects of water content and on-chip flow rate on the multiscale structure, loading and release properties of DiI-loaded poly(ε-caprolactone)-block-poly(ethylene oxide) (PCL-b-PEO) nanoparticles produced in a gas-liquid segmented microflu ...
DOI:
10.1016/j.jcis.2016.04.010

18. On wettability of shale rocks

Author:
Roshan, H.; Al-Yaseri, A.Z.; Sarmadivaleh, M.; Iglauer, S.
Source:
Journal of colloid and interface science 2016 v.475 pp. 104-111
ISSN:
0021-9797
Subject:
calcium chloride; capillarity; contact angle; hydraulic fracturing; ions; magnesium chloride; models; oils; potassium chloride; shale; sodium chloride; temperature; water uptake; wettability
Abstract:
... The low recovery of hydraulic fracturing fluid in unconventional shale reservoirs has been in the centre of attention from both technical and environmental perspectives in the last decade. One explanation for the loss of hydraulic fracturing fluid is fluid uptake by the shale matrix; where capillarity is the dominant process controlling this uptake. Detailed understanding of the rock wettability i ...
DOI:
10.1016/j.jcis.2016.04.041

19. Polyelectrolyte assisted charge titration spectrometry: Applications to latex and oxide nanoparticles

Author:
Mousseau, F.; Vitorazi, L.; Herrmann, L.; Mornet, S.; Berret, J.-F.
Source:
Journal of colloid and interface science 2016 v.475 pp. 36-45
ISSN:
0021-9797
Subject:
aluminum; chlorides; cost effectiveness; dispersions; electrolytes; electrostatic interactions; latex; light scattering; mixing; molecular weight; nanoparticles; pH; particle size; polymers; quaternary ammonium compounds; separation; silica; spectroscopy; titration; turbidity
Abstract:
... The electrostatic charge density of particles is of paramount importance for the control of the dispersion stability. Conventional methods use potentiometric, conductometric or turbidity titration but require large amount of samples. Here we report a simple and cost-effective method called polyelectrolyte assisted charge titration spectrometry or PACTS. The technique takes advantage of the propens ...
DOI:
10.1016/j.jcis.2016.04.036

20. Simultaneous determination of epinephrene and paracetamol at copper-cobalt oxide spinel decorated nanocrystalline zeolite modified electrodes

Author:
Samanta, Subhajyoti; Srivastava, Rajendra
Source:
Journal of colloid and interface science 2016 v.475 pp. 126-135
ISSN:
0021-9797
Subject:
X-ray diffraction; acetaminophen; electrodes; electron microscopy; epinephrine; nanocrystals; rapid methods; zeolites
Abstract:
... In this study, CuCo2O4 and CuCo2O4 decorated nanocrystalline ZSM-5 materials were prepared. For comparative study, a series of MCo2O4 spinels were also prepared. Materials were characterized by the complementary combination of X-ray diffraction, N2-adsorption, UV–visible, and electron microscopic techniques. A simple and rapid method for the simultaneous determination of paracetamol and epinephrin ...
DOI:
10.1016/j.jcis.2016.04.049