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Growth of BiOBr/ZIF‑67 Nanocomposites on Carbon Fiber Cloth as Filter‑Membrane‑Shaped Photocatalyst for Degrading Pollutants in Flowing Wastewater

查看全文 作　　者：Xiaolong [1,2]Li;Ting [2]Liu;Yan [2]Zhang;Jiafeng [2]Cai;Mengqiang [2]He;Maoquan [1]Li;Zhigang [1,3]Chen;Lisha [2]Zhang 高影响力作者 机构地区：[1]Department of Interventional and Vascular Surgery,Shanghai Tenth People’s Hospital,Tongji University School of Medicine,Shanghai 200072,China;[2]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;[3]College of Materials Science and Engineering,Donghua University,Shanghai 201620,China高影响力机构 出　　处：《Advanced Fiber Materials》索引2022年第4卷第6期,共12页高影响力期刊 基　　金：This work was financially supported by the Natural Science Foundation of Shanghai(21ZR1402500);the National Natural Science Foundation of China(52161145406);the Open Project Program of the State Key Laboratory of Photocatalysis on Energy and Environment for the Fuzhou University;the Fundamental Research Funds for the Central Universities,and DHU Distinguished Young Professor Program. 摘　　要：BiOBr-based nanocomposite photocatalysts are used for removing the organic pollutants,but their poor adsorption/photocatalytic performances and the low potential for recycling limit their application.To solve the issue,herein we report a large-area recyclable CFC/BiOBr/ZIF-67 filter-membrane-shaped photocatalyst prepared by in situ growth of BiOBr/ZIF-67 nanocomposites on carbon fiber cloth(CFC).Fabrication process is based on hydrothermal synthesis of BiOBr nanosheets(diameter 0.5–1μm)on carbon fiber cloth(as substrate material)and then a chemical bath route is used to grow ZIF-67 nanoparticles(diameter 300–600 nm)in situ on the surface of CFC/BiOBr.Resulted composite,CFC/BiOBr/ZIF-67,exhibits a high specific surface area(545.82 m^(2) g^(−1))and a wide photoabsorption,accompanied by an absorption edge(~620 nm).In dark condition,CFC/BiOBr/ZIF-67 adsorbs bisphenol A(BPA)and orange 7(AO7)within 60 min,respectively with 20.0% and 40.1% efficiency.This level of efficiencies are correspondingly 2.6 and 3.2 times more that of the bare CFC/BiOBr(7.6%for BPA and 12.4% for AO7).Under visible light irradiation,CFC/BiOBr/ZIF-67 can degrade 69.7% of BPA and 96.0% of AO7,in 120 min,which are,respectively,1.3 and 1.8 times higher than the absorption efficiency of bare CFC/BiOBr(53.2% for BPA,52.0% for AO7).When CFC/BiOBr/ZIF-67 is used as a filter membrane for photocatalytic removal of pollutants in flowing wastewater(AO7,rate:~1.5 L h^(−1)),92.2%of AO7 can be decomposed after 10 filtering cycles.This study suggests CFC/BiOBr/ZIF-67 as a novel highly functional,recyclable and environmental friendly photo-driven membrane filter for purification and recovery of flowing surface waste waters. 关 键 词：Carbon fiber cloth BiOBr/ZIF-67 Adsorption PHOTOCATALYST Flowing wastewater
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