锡酸锌基光催化材料研究进展  

Research Progress of Zinc Stannate-Based Photocatalysts

作　　者：李宇涵[1] 任自藤 段有雨 欧阳平[1] 吕康乐[2] Li Yuhan;Ren Ziteng;Duan Youyu;Ouyang Ping;Lv Kangle(Engineering Research Center for Waste Oil Recovery Technology and Equipment,Ministry of Education,Chongqing Key Laboratory of Catalysis and New Environmental Materials,College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China;Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission,College of Resources and Environmental Science,South-Central Minzu University,Wuhan 430074,China;College of Physics,Chongqing University,Chongqing 401331,China)

机构地区：[1]重庆工商大学废油资源化技术与装备教育部工程技术研究中心,重庆市催化与环境材料重点实验室,环境与资源学院,重庆400067 [2]中南民族大学资环学院资源转化与污染控制国家民委重点实验室,湖北武汉430074 [3]重庆大学物理学院,重庆401331

出　　处：《稀有金属》2023年第1期73-89,共17页Chinese Journal of Rare Metals

基　　金：国家自然科学基金青年基金项目(51808080,21707036);重庆市教委科学技术研究计划项目(KJQN201800826,KJZDK201800801,KJQN202000818);重庆市博士后出站留渝和校内高层次人才引进项目(1856039,1956044)资助。

摘　　要：在各类半导体光催化材料中,反尖晶石结构的锡酸锌(Zn_(2)SnO_(4))因传导率良好、电子迁移率高、物化性质稳定且无毒而成为研究热点。近年来,随着研究的不断深入,人们采用(微波)水热法合成出具有不同形貌结构的Zn_(2)SnO_(4)。但因合成条件对Zn_(2)SnO_(4)形貌的影响很大,且缺乏系统性总结,因而本文概述了(微波)水热合成方法中水热时间、合成温度以及原材料、矿化剂与表面活性剂类型和浓度对Zn_(2)SnO_(4)晶体构型、表面电子结构、形貌特征、粒径尺寸及催化性能的影响,以期指导Zn_(2)SnO_(4)特定形貌的可控合成。此外,本文还介绍了提升Zn_(2)SnO_(4)光催化活性的改性策略,即元素掺杂、构建异质结、单质负载(贵金属沉积)、形貌调控和缺陷工程,系统总结了各种改性策略对能带结构、光吸收、光生载流子分离迁移、表面催化反应和光催化性能的影响。最后,展望了Zn_(2)SnO_(4)基半导体光催化材料在各类光催化应用中所面临的挑战与机遇。Solar energy utilization is a significant way to solve the environmental and energy problems accompanying with the fossil fuel economy development,while artificial photosynthesis imitated semiconductor photocatalysis is one of important solar energy utilization strategies.As a sustainable tactics can be qualified for solving the issues of energy crisis and environmental pollution,semiconductor photocatalysis holds a comparably significant role among various treatment technologies.The core of semiconductor photocatalysis is inseparable from the development of efficient photocatalysts.In fact,there are a large number of binary metal oxides (TiO_(2),Fe_(2)O_(3),ZnO,CdS,SnO_(2),etc.) and even more stable ternary Ⅱ-Ⅳ-Ⅵ metal oxides (SrTiO_(3),CaTiO_(3),Zn_(2)GeO_(4),ZnIn2S4) can work as photocatalytic materials.Among various semiconductor photocatalytic materials,zinc stannate (Zn_(2)SnO_(4)) with inverse spinel structure has become a research hotspot due to its good conductivity,high electron mobility,stable physicochemical properties and non-toxicity.The development of Zn_(2)SnO_(4)contributes to the environmental alleviation and the energy production to some extent,of which has been considered as a rising star photocatalyst.However,the unmodified Zn_(2)SnO_(4)can only respond to UV-light,in the meantime,the recombination rate of photogenerated electron-hole pairs is quite fast,the surface-active sites are relatively limited,resulting in its poor photocatalytic behavior and stability during the reaction process.Up to now,much effort has been devoted to the enhancement of photocatalytic performance over Zn_(2)SnO_(4),including doping,semiconductor heterojunctions,metallic loading and morphological or defect engineering.Amongst,doping requires the introduction of alien elements into Zn_(2)SnO_(4)via physical or chemical approaches,leading to the formation of new charges within the crystal,producing defects or altering the lattice types,and thus changing the electronic structure and the distribution of photo-gene

关 键 词：Zn_(2)SnO_(4) 合成方法 改性策略 光催化性能 

分 类 号：TB34[一般工业技术—材料科学与工程]