DataVXACS Applied Materials & InterfacesPaper
journal article·2022-06-01Open access

Ag/AgBr/AgVO3 Photocatalyst-Embedded Polyacrylonitrile/Polyamide/Chitosan Nanofiltration Membrane for Integrated Filtration and Degradation of RhB

Yiying Yue, Kaiyang Hou, Jiayue Chen, Wanli Cheng, Qinglin Wu, Jingquan Han, Jianchun Jiang

ACS Applied Materials & Interfaces· Volume 14· Issue 21
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Abstract

A nanofiltration (NF) membrane containing a NaOH-treated electrospun polyacrylonitrile (HPAN) substrate, an interfacial polymerization (IP) polyamide (PA) layer, a chitosan (CS) coating layer, and an Ag/AgBr/AgVO3 photocatalyst loading layer was prepared. The structural evolution of the membranes was investigated, and their performance was estimated in accordance with the water flux and rejection rate. A probable mechanism for the photocatalytic activity of Ag/AgBr/AgVO3 was proposed. The loading of the Ag/AgBr/AgVO3 heterojunction on the HPAN/PA/CS NF membrane endowed the membrane with excellent self-cleaning properties owing to the photolytic degradation of the dye. The filtration and degradation processes of the Ag/AgBr/AgVO3-loaded membrane constantly promoted each other, and the treatment efficiency achieved with the integrated (filtration + degradation) process was superior to those obtained with the filtration and degradation processes alone. The Ag/AgBr/AgVO3-NF membrane exhibited excellent recyclability and stability when subjected to five integrated filtration–degradation processes. In addition, the Ag/AgBr/AgVO3-NF membrane exhibited an elastic modulus of 65.75 MPa and a toughness of 38.9 kJ/m3 along with a good disinfection effect on Escherichia coli in visible light. The as-prepared photocatalyst-loaded NF membrane with excellent antifouling performance, antimicrobial activity, high strength, and recyclability showed potential for continuous water purification operation.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersNanomaterialsCatalysis & surfaces

OpenAlex topics: Membrane Separation Technologies · Nanomaterials for catalytic reactions · Extraction and Separation Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China

Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China

School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, United States

College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China

College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China

Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China

Funding

National Natural Science Foundation of China · Postdoctoral Research Foundation of China · Jiangsu Postdoctoral Research Foundation · Natural Science Foundation of Jiangsu Province for Outstanding Young Scholars · Qing Lan Project of Jiangsu Province · 333 Project Foundation of Jiangsu Province · 13th China Special Postdoctoral Science Foundation

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