文献类型：期刊文献

英文题名：Novel Ag-AgBr decorated composite membrane for dye rejection and photodegradation under visible light

作者：Wang, Yixing[1];Dai, Liheng[1];Qu, Kai[1];Qin, Lu[1];Zhuang, Linzhou[1];Yang, Hu[1];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：15

期号：4

起止页码：892

外文期刊名：FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING

收录：;EI(收录号：20211210121469);WOS:【SCI-EXPANDED(收录号:WOS:000631319900001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 21908054).

语种：英文

外文关键词：Ag-AgBr; dye rejection; photodegradation; visible light

摘要：Photocatalytic membranes have received increasing attention due to their excellent separation and photodegradation of organic contaminants in wastewater. Herein, we bound Ag-AgBr nanoparticles onto a synthesized polyacrylonitrile-ethanolamine (PAN-ETA) membrane with the aid of a chitosan (CS)-TiO2 layer via vacuum filtration and in-situ partial reduction. The introduction of the CS-TiO2 layer improved surface hydrophilicity and provided attachment sites for the Ag-AgBr nanoparticles. The PAN-ETA/CS-TiO2/Ag-AgBr photocatalytic membranes showed a relatively high water permeation flux (similar to 47 L.m(-2).h(-1).bar(-1)) and dyes rejection (methyl orange: 88.22%; congo red: 95%; methyl blue: 97.41%; rose bengal: 99.98%). Additionally, the composite membranes exhibited potential long-term stability for dye/salt separation (dye rejection: similar to 97%; salt rejection: similar to 6.5%). Moreover, the methylene blue and rhodamine B solutions (20 mL, 10 mg . L-1) were degraded approximately 90.75% and 96.81% in batch mode via the synthesized photocatalytic membranes under visible light irradiation for 30 min. This study provides a feasible method for the combination of polymeric membranes and inorganic catalytic materials.