Z-Scheme Heterojunction g-C_(3)N_(5)/Bi_(5)O_(7)I High-Efficiency Mercury Removal Photocatalyst
作者机构：College of Energy and Mechanical EngineeringShanghai University of Electric PowerShanghai 200090China Shanghai Institute of Pollution Control and Ecological SecurityShanghaiChina Solid Waste DivisionShanghaiEnvironment GroupShanghai 200336China School of Environmental Science and EngineeringSun Yat-Sen UniversityGuangzhou 510006China
出 版 物：《Energy Material Advances》 (能源材料前沿（英文）)
年 卷 期：2023年第4卷第1期
页 面：484-499页
核心收录：
学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术]
基 金：National Natural Science Foundation of China(52076126) Science and Technology Committee of Shanghai Municipality(22dz1208800) Shanghai Science and Technology Committee(22010501500) Key Laboratory of Clean Power Generation and Environmental Protection Technology in Mechanical Industry
主 题：composites mercury transport
摘 要：Photocatalysis technology is an effective means to address the issue of energy and environmental *** this paper,defect engineering is introduced to couple g-C_(3)N_(5),which further improves the photocatalytic oxidation of mercury by Bi_(5)O_(7)*** experimental results show that defect engineering can not only regulate superoxide radicals as intermediates but also act as active sites to accelerate carrier transport,thereby increasing the photocatalytic mercury removal efficiency to 96.2%.The chemical reaction rate of g-C_(3)N_(5)/Bi_(5)O_(7)I heterojunction photocatalyst was 8.01 times that of pure g-C_(3)N_(5)and 4.58 times that of pure Bi_(5)O_(7)*** XPS and active radical capture test experiments,it was found that·O_(2)^(-),h^(+),and·OH play a major role in mercury removal ***,a collaborative strategy of vacancy structure and built-in electric field is proposed,which improves the charge transport efficiency of g-C_(3)N_(5)/Bi_(5)O_(7)I Z-scheme heterojunction *** work provides theoretical support for the application of g-C_(3)N_(5)and its composites in the field of flue gas mercury removal.
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