Rationally designed Ti_(3)C_(2) MXene/CaIn_(2)S_(4) Schottky heterojunction for enhanced photocatalytic Cr(VI) reduction:Performance,influence factors and mechanism
作者机构：School of Materials Science and EngineeringYancheng Institute of TechnologyYancheng 224051China School of Energy and MaterialsShanghai Polytechnic UniversityShanghai 201209China Eco-Materials and Renewable Energy Research Centre(ERERC)Nanjing UniversityNanjing 210093China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第161卷第30期
页 面：123-135页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学]
基 金：This work was financially supported by the National Natural Science Foundation of China(Nos.51902282 and 12274361) the Qinglan Project of Jiangsu of China,the Natural Science Founda-tion of Jiangsu Province(No.BK20211361) the College Natural Science Research Project of Jiangsu Province(No.20KJA430004)
主 题：CaIn_(2)S_(4) Ti_(3)C_(2)MXene Cr(VI)reduction Visible light Photocatalysis
摘 要：As a highly toxic heavy metal,Cr(VI)reduction by developing high-efficiency photocatalysts is of great ***,we firstly design few-layer Ti_(3)C_(2) MXene(FTM)by the hand-operated shaking,show-ing dual advantages of structural stability and more exposed reactive ***,a refluxed process is performed to fabricate FTM/CaIn_(2)S_(4)(FTC) composites,where 2D CaIn_(2)S_(4)(CIS) nanoplates are closely con-nected with 2D FTM to form Schottky *** optimal 1-FTC with the FTM/CIS mass ratio of 1 wt.%exhibits the highest activity toward photocatalytic Cr(VI)reduction under visible *** is well eluci-dated that the broadened light absorption range and promoted charge carrier separation rate induced by the introduction of FTM are responsible for improving photocatalytic activity of *** Cr(VI)photoreduction,1-FTC possesses excellent photo-stability and *** effects of catalyst mass,co-existing ions,water sources and pH values on the Cr(VI)photoreduction efficiency are ***-togenerated•O_(2)^(−)and e−are the main radical species accounting for Cr(VI)photoreduction over *** photocatalytic mechanism along with Cr(VI)removal pathway is *** work may provide some insights into constructing FTM-based Schottky junctions for the efficient water purification.
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