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

作　　者：Xiaolong Li Ting Liu Yan Zhang Jiafeng Cai Mengqiang He Maoquan Li Zhigang Chen Lisha Zhang 

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

出　　处：《Advanced Fiber Materials》2022年第6期1620-1631,共12页先进纤维材料（英文）

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 

分 类 号：TB383[一般工业技术—材料科学与工程]