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Journal of Colloid and Interface Science

Roya Sedghi, Bahareh Heidari, Mehrasa Yassari
No abstract text is available yet for this article.
September 12, 2018: Journal of Colloid and Interface Science
Jintao Wang, Hongfei Wang
In this paper, we report for the first time the fabrication of cauliflower-like Ni(OH)2 particles-coated fabrics with inverse special wettability via a facile hydrothermal method. The coated fabric is superhydrophilic in air and superoleophobic underwater, which can be changed into superhydrophobicity after being modified by long-chain fatty acid. After the superhydrophilic fabric is wetted by water in advance, hot alkaline water can be removed from the light oil/water mixture driven by gravity. Also, heavy oil can be removed from the heavy oil/hot alkaline water mixture under the action of gravity using superhydrophobic fabric...
September 11, 2018: Journal of Colloid and Interface Science
Aparna Shukla, Akhand Pratap Singh, Biswajit Ray, Vinod Aswal, Amrita G Kar, Pralay Maiti
Hydrophilicity of cyclodextrin is controlled through grafting of polyurethane of varying graft density, thereby maintain the hydrophilic-hydrophobic balance, to sustain the drug delivery rate for better tumor treatment. Grafting is verified through nuclear magnetic resonance (1 H NMR) and other spectroscopic techniques along with the hydrodynamic volume measurement of grafted species and the degree of substitution has been calculated from the integrated peak areas. Thermal and mechanical stability of the graft copolymers have improved significantly with respect to cyclodextrin and the formation of smaller blobs having larger in number has been obtained from small angle neutron scattering, atomic force microscopy and optical images...
September 11, 2018: Journal of Colloid and Interface Science
Pengfei Chen, Pingxing Xing, Zhiqiang Chen, Xin Hu, Hongjun Lin, Leihong Zhao, Yiming He
This paper is designed for elevating the photocatalytic H2 -evoultion performance of g-C3 N4 through the modification of AgNbO3 nanocubes. Via the microwave heating method, g-C3 N4 was in-situ formed on AgNbO3 surface to fabricate a close contact between the two semiconductors in forty minutes. X-ray diffraction (XRD), Fourier transform-infrared (FT-IR), X-ray photoelectron spectroscopy (XPS) experiments were performed to confirm the binary structure of the synthesized AgNbO3 /g-C3 N4 composite. N2 -adsorption and visible diffuse reflection spectroscopy (DRS) analyses indicated that the addition of AgNbO3 to g-C3 N4 showed nearly negligible influence on the specific surface area and the optical property...
September 8, 2018: Journal of Colloid and Interface Science
Qiushi Wang, Yifu Zhang, Hanmei Jiang, Changgong Meng
Supercapacitor performance is reported for manganese silicate hybridized carbon materials (MnSi-C) that is derived from natural bamboo leaves. The in-situ generated manganese silicate is in good distribution by a simple hydrothermal treatment without the addition of another controlling agent. We also study the performance of MnSi-C as a single electrode and a cathode for fabrication of asymmetric supercapacitor device with a Ni(OH)2 anode. Remarkably, the single electrode MnSi-C-3 delivered a capacity of 162...
September 8, 2018: Journal of Colloid and Interface Science
Zanru Guo, Hongjian Gu, Qiang Chen, Zhanfeng He, Wenyuan Xu, Jiali Zhang, Yongxin Liu, Leyan Xiong, Longzhen Zheng, Yujun Feng
HYPOTHESIS: The effective separation and recovery of oils from water is important for the protections of ecosystems and the environment. Polymeric porous monoliths have been demonstrated as attractive absorbents for oil/water separation. However, the recyclability was mainly realized by squeezing, combustion, or centrifugation, which may restrict in elastic materials, destroy the adsorbates or need special apparatus. Thus it is desirable to developing monoliths with controllable oil absorption and desorption...
September 7, 2018: Journal of Colloid and Interface Science
Feifei Zhang, Hongsen Zhang, Rongrong Chen, Qi Liu, Jingyuan Liu, Cheng Wang, Zhiyao Sun, Jun Wang
Undesirable bio-adhesion of microalgae on adsorbent can influence its adsorption capacity. In this report, we fabricated a novel mussel-inspired antifouling magnetic activated carbons which derived orange peel by integrated biosorption-pyrolysis process (MACs@PDA-Ag), via co-functionalization of poly-dopamine (PDA) and Ag nanoparticles (AgNPs), for the recovery of uranium (VI) from simulated seawater with antimicrobial adhesion performance; this process did not require an additional reducing agent. The effect of pH, concentration, contact time, fouling test against nitzschia closterium f...
September 7, 2018: Journal of Colloid and Interface Science
Yuan-Dong Huang
This comment mainly deals with a mistake of applying pseudo-first-order kinetic model for testing the kinetic behaviors of adsorption.
September 7, 2018: Journal of Colloid and Interface Science
Amer Alizadeh, Moran Wang
It has been a long-lasting debate on the position of zeta potential plane within aqueous solutions. This paper reports a flexible behavior of the inactive electrokinetic layer between the outer-Helmholtz plane and zeta potential plane, so-called buffer layer, in response to bulk ion concentration. This flexibility is not only corroborated by analyzing the measured zeta potentials with resulting electrical quad-layer model (inner- and outer-Helmholtz, buffer, and diffuse layers) but also consistent with thermodynamic analysis...
September 6, 2018: Journal of Colloid and Interface Science
Mamta Devi Sharma, Chavi Mahala, Mrinmoyee Basu
In this present study we have developed method for the synthesis of MoSe2 nanosheets following a simple hydrothermal technique. Palladium (Pd) and rhodium (Rh) nanoparticles were decorated on the surface of MoSe2 following a simple wet-chemical route. Pd and Rh nanoparticles decorated MoSe2 were applied for hydrogen evolution reaction (HER) in different pH conditions like acidic (0.5 M H2 SO4 ), neutral (pH-7 buffer) and in alkaline (1 M KOH) medium and 3.5 wt% of saline water. Pd and Rh decorated MoSe2 show efficient activity towards HER irrespective of the applied electrolyte...
September 6, 2018: Journal of Colloid and Interface Science
Na Zhang, Ying Huang, Mingyue Wang, Xudong Liu, Meng Zong
A novel hierarchical composites for coupling thistle-like CoNi with dielectric Ag decorated graphene in paraffin wax as high performance microwave absorber has been synthesized by a facile two-step strategy. The components, particle size, microstructure and morphology of the resulting composites are characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectra, scanning electron microscope, transmission electron microscopy and energy dispersive X-ray spectroscopy, etc. Due to the unique flower structure and good synergistic effect of dielectric loss and magnetic loss, thistle-like CoNi@dielectric Ag decorated graphene composites have showed glorious microwave absorption intensity and frequency width...
September 6, 2018: Journal of Colloid and Interface Science
Loïc Bugnicourt, Soline Peers, Charline Dalverny, Catherine Ladavière
Lipid/chitosan (CS) particle assemblies have recently been developed as new promising carriers for drug delivery applications. The present work reports for the first time the formation of such assemblies by a simple spontaneous adsorption of lipid membranes onto the CS particle surfaces. As shown by dynamic light scattering (DLS) measurements, final non-aggregated assemblies with relatively satisfactory size distributions were obtained by using this process. Furthermore, a particular attention has been paid herein to the effect of the initial morphology of lipid membranes (i...
September 6, 2018: Journal of Colloid and Interface Science
Ying Liu, Fei Yang, Wei Qin, Guowei Yang
The Co2 P@NiCo2 O4 bi-functional electrocatalyst was fabricated for hydrogen evolution reaction and oxygen evolution reaction in acidic, neutral and alkaline media. The Co2 P@NiCo2 O4 in alkaline media exhibites an extremely low overpotential of 170 mV in oxygen evolution to achieve a current density of 10 mA cm-2 and produces stable water splitting nearly 30 h. The anchored-Co2 P can enhance the electrochemical performance of pristine NiCo2 O4 as well as increase the tolerance in acidic media of NiCo2 O4 ...
September 6, 2018: Journal of Colloid and Interface Science
T S Anirudhan, G S Lekshmi, F Shainy
A novel amidoxime functionalized adsorbent, poly(amidoxime)-grafted-chitosan/bentonite composite [P(AO)-g-CTS/BT] was prepared by in situ intercalative polymerization of acrylonitrile (AN) and 3-hexenedinitrile (3-HDN) onto chitosan/bentonite composite using ethylene glycol dimethacrylate (EGDMA) as cross linking agent and potassium peroxy disulphate (K2 S2 O8 ) as free radical initiator. The adsorbent was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS), BET surface area analyser and X-ray photoelectron spectroscopy (XPS)...
September 5, 2018: Journal of Colloid and Interface Science
Namita Jaiswal, Abhiram Hens, Manosree Chatterjee, Nibedita Mahata, Nripen Chanda
Protein functionalized micro-scale patterned structures are developed using a biocompatible polymer PLGA (poly (d, l-lactide-co-glycolide)) via thin film dewetting and by step-wise chemical conjugations with EDA (ethylenediamine) and anti-EpCAM (Epithelial Cell Adhesion Molecule) antibodies to target the epithelial cell adhesion molecules of cancer cells. The effectiveness of such protein functionalized patterned surface is checked through cell isolation process using blood samples spiked with different cancer cells such as MCF-7, A549, MDA-MB-231...
September 5, 2018: Journal of Colloid and Interface Science
Sengodu Prakash, Chunfei Zhang, Jong-Deok Park, Fatemeh Razmjooei, Jong-Sung Yu
An innovative and simple synthesis strategy of silicon nanoparticle (Si NP) core covered by mesoporous shell carbon (MSC) structure is demonstrated. The Si core@MSC (SCMSC) composite is developed for addressing the issues for Si anode material in lithium ion batteries (LIBs) such as high volume expansion and low electrical conductivity. Significant improvement in the electrochemical performance for the SCMSC anode is observed compared with bare Si anode. The SCMSC composite delivers an initial specific capacity of 2450 mAh g-1 at 0...
September 5, 2018: Journal of Colloid and Interface Science
Frederik Lipfert, Michael Kerscher, Stefan Mattauch, Henrich Frielinghaus
The lubrication effect of bicontinuous microemulsions describes a facilitated flow along hydrophilic planar surfaces because the fluid forms lamellar domains that can slide off along each other much better than randomly ordered domains. The applicability of this effect is based on the prerequisite of the lamellar structure not being destroyed by external shear-fields. In this paper, we demonstrate that the lamellar structure is highly stable for shear rates of up to 600 s-1 using neutron reflectivity and grazing incidence small angle neutron scattering experiments...
September 5, 2018: Journal of Colloid and Interface Science
Yuan Bian, Weixuan Zeng, Meng He, Yongjin Ma, Yi Liu, Yi Kong, Jun Pan
Regulating internal electronic structure of photocatalysts via elements doping holds huge potential in tuning efficient charge transfer and boosting high-performance. Herein, molybdenum embedded bismuth tungstate (Bi2 WO6 ) is employed to explore the electronic structures and various performances via the assistance of experimental verification and density function theory (DFT) simulation. The band structures and Mo ions doping behaviors of Bi2 Mox W1-x O6 are systematically measured. Doping can induce the distortion of intrinsic electric density and internal electric-field, resulted in efficient charge transfer of Bi2 Mo0...
September 5, 2018: Journal of Colloid and Interface Science
Xin Wang, Yuren Xiang, Benqing Zhou, Youming Zhang, Jiatao Wu, Rui Hu, Liwei Liu, Jun Song, Junle Qu
The efficient utilization of solar energy for environmental cleaning has attracted great attention, where the key is to efficiently harvest the visible and near-infrared (NIR) light which occupies approximately 95% of the solar light energy. Recently, black phosphorus (BP), as a new staring 2D material, has been extensively studied as photocatalytic materials due to its broad light absorption and tunable bandgap. Herein, we report a novel ternary nanocomposite, BP-Ag/TiO2 , prepared through controlled deposition of Ag clusters on the surface of TiO2 nanocrystals and then incorporated to BP nanosheets...
September 5, 2018: Journal of Colloid and Interface Science
Qingyun Duan, Xuede Li, Zheng Wu, Ahmed Alsaedi, Tasawar Hayat, Changlun Chen, Jie Li
A novel interconnected hierarchically nitrogen-doped porous carbon (IHNPC) derived from metal-organic framework-based composites was obtained via a facile method and applied as a superior material for the capture of 17β-estradiol (E2) from aqueous solution. The adsorption kinetic and isotherm behaviors were well described by the pseudo-second-order and Langmuir models. Various thermodynamic parameters uncovered that E2 adsorption onto IHNPC was spontaneous and exothermic. Moreover, the adsorption rate of E2 by IHNPC didn't decrease with increasing water salinity in the presence of electrolyte ions and humic acids...
September 5, 2018: Journal of Colloid and Interface Science
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