Volume 41, Issue 1 pp. 149-156
Research Article

Rapid Degradation of Rhodamine B via Poly(dopamine)-Modified Membranes with Silver Nanoparticles

Shengkui Ma

Shengkui Ma

Tianjin Polytechnic University, State Key Laboratory of Separation Membranes and Membrane Processes, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

Tianjin Polytechnic University, School of Materials Science and Engineering, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

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Xi Chen

Corresponding Author

Xi Chen

Tianjin Polytechnic University, State Key Laboratory of Separation Membranes and Membrane Processes, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

Tianjin Polytechnic University, School of Materials Science and Engineering, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

Correspondence: Xi Chen ([email protected]), Tianjin Polytechnic University, State Key Laboratory of Separation Membranes and Membrane Processes, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China.Search for more papers by this author
Bowu Zhao

Bowu Zhao

Tianjin Polytechnic University, State Key Laboratory of Separation Membranes and Membrane Processes, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

Tianjin Polytechnic University, School of Materials Science and Engineering, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

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Liying Li

Liying Li

Tianjin Polytechnic University, State Key Laboratory of Separation Membranes and Membrane Processes, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

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Weigui Fu

Weigui Fu

Tianjin Polytechnic University, State Key Laboratory of Separation Membranes and Membrane Processes, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

Tianjin Polytechnic University, School of Materials Science and Engineering, No. 399 Binshuixi Road, Xiqing District, 300387 Tianjin, China

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First published: 25 August 2017
Citations: 16

Abstract

Rapid and convenient removal of organic dyes from water still remains a great challenge. The fast degradation of Rhodamine B (RhB) with NaBH4 as a reducing agent catalyzed by a catalytic membrane fabricated by poly(dopamine)-modified poly(vinylidene difluoride) (PVDF) powders and silver nanoparticles (NPs) is described. Results indicate that the catalytic membrane shows an excellent performance for RhB degradation under a static state and cross-flow catalysis. Compared to static catalysis, cross-flow catalysis can efficiently enhance the degradation of RhB due to the silver NPs and the high flowing rate of reactants on the membrane surface. The penetrated fluid can be directly excluded due to the RhB with a high conversion coming out from the membrane pores with silver NPs. The convenient operation avoids additional steps to separate catalysts from the system and, therefore, has a promising potential in degradation of organic dyes.

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