Construction of n-TiO_(2)/p-Ag_(2)O Junction on Carbon Fiber Cloth with Vis-NIR Photoresponse as a Filter-Membrane-Shaped Photocatalyst  

作　　者：Gumila Duoerkun Yan Zhang Zhun Shi Xiaofeng Shen Wei Cao Ting Liu Jianshe Liu Quanyuan Chen Lisha Zhang 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China

出　　处：《Advanced Fiber Materials》2020年第1期13-23,共11页先进纤维材料（英文）

基　　金：This work was supported by the Fundamental Research Funds for the Central Universities;DHU Distinguished Young Professor Program,National Key Research and Development Program of China(2016YFC0400501,2016YFC0400502).

摘　　要：The development of effective and reusable photocatalysts with broad-spectra activity has attracted attention.Herein,we have constructed n-TiO_(2)/p-Ag_(2)O junction on carbon fiber(CF)cloth as an efficient and recyclable photocatalyst.With CF cloth as the substrate,TiO_(2) nanorods(length:1-2μm)are prepared by a hydrothermal process,and the in-situ growth of Ag_(2)O nanoparticles(10-20 nm)is then realized by chemical bath deposition route.The flexible CF/TiO_(2)/Ag_(2)O cloth(area:4×4 cm^(2))shows a broad and strong photo-absorption(200-1000 nm).Under the illumination of visible-light(λ>400 nm),CF/TiO_(2)/Ag_(2)O cloth can efficiently eliminate 99.2%rhodamine B(RhB),99.4%acid orange 7(AO7),87.6%bisphenol A(BPA),and 89.5%hexavalent chromium(Cr^(6+))in 100 min,superior to CF/Ag_(2)O cloth(83.5%RhB,60.0%AO7,31.2%BPA and 41.8%Cr^(6+)).In particular,under the NIR-light illumination(980 nm laser),CF/TiO_(2)/Ag_(2)O cloth can remove 70.9%AO7 and 60.0%Cr^(6+) in 100 min,which are significantly higher than those by CF/Ag_(2)O cloth(19.8%AO7 and 18.9%Cr^(6+)).In addition,CF/TiO_(2)/Ag_(2)O cloth(diameter:10 cm),as a filter-membrane,can effectively wipe off 94.4%flowing RhB solution(rate:~1 L h^(−1))at 6th filtering/degrading grade.Thus,CF/TiO_(2)/Ag_(2)O cloth can be used as a Vis-NIR-responded filter-membrane-shaped photocatalyst with high-efficiency for purifying wastewater.

关 键 词：Carbon fiber cloth n-TiO_(2)/p-Ag_(2)O junction Vis-NIR photoresponse PHOTOCATALYST Filter-membrane 

分 类 号：X70[环境科学与工程—环境工程]