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Polymers 2018, 10(1), 59; https://doi.org/10.3390/polym10010059

Cross-Flow Catalysis Behavior of a PVDF/SiO2@Ag Nanoparticles Composite Membrane

1,2
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1
State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China
2
School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
3
School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
4
Tianjin BeiAo Membrane Co., Ltd., Tianjin 300180, China
*
Authors to whom correspondence should be addressed.
Received: 15 December 2017 / Revised: 6 January 2018 / Accepted: 6 January 2018 / Published: 10 January 2018
(This article belongs to the Special Issue Nanoparticle-Reinforced Polymers)
View Full-Text   |   Download PDF [6099 KB, uploaded 10 January 2018]   |  

Abstract

A blend of Polyvinylidene Fluoride (PVDF) and SiO2 microspheres in N,N-Dimethylformamide (DMF) underwent phase inversion to form a PVDF/SiO2 membrane with SiO2 microspheres in the membrane’s pores. Subsequently, the SiO2 microspheres have been used as platforms for in site Ag nanoparticles (NPs) synthesis, forming a composite membrane. Benefitting from the full exposure of Ag NPs to the reactants, the composite membrane shows high catalytic reactivity when catalyzing the reduction of p-nitrophenol under a cross-flow. The catalytic reaction follows the first-order kinetics, and the reaction rate increases with an increase in the amount of Ag NPs in the membrane, the reaction temperature, and the operating pressure. What is more, highly purified products can be produced and separated from the reactants in a timely manner by using the composite membrane. View Full-Text
Keywords: Ag nanoparticles; catalysis; composite membrane; separation; SiO2 microspheres Ag nanoparticles; catalysis; composite membrane; separation; SiO2 microspheres
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, W.; Chen, X.; Zhao, C.; Zhao, B.; Dong, H.; Ma, S.; Li, L.; Chen, L.; Zhang, B. Cross-Flow Catalysis Behavior of a PVDF/SiO2@Ag Nanoparticles Composite Membrane. Polymers 2018, 10, 59.

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