用于能源转化和环境修复的TiO_(2)基梯型异质结光催化剂  

TiO_(2)-based S-scheme photocatalysts for solar energy conversion and environmental remediation

作　　者：张宝龙 孙彬 刘方璇 高婷婷 周国伟 Baolong Zhang;Bin Sun;Fangxuan Liu;Tingting Gao;Guowei Zhou(Key Laboratory of Fine Chemicals in Universities of Shandong,Jinan Engineering Laboratory for Multi-scale Functional Materials,School of Chemistry and Chemical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]Key Laboratory of Fine Chemicals in Universities of Shandong,Jinan Engineering Laboratory for Multi-scale Functional Materials,School of Chemistry and Chemical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China

出　　处：《Science China Materials》2024年第2期424-443,共20页中国科学（材料科学）（英文版）

基　　金：supported by the National Natural Science Foundation of China(52202102,51972180);the Natural Science Foundation of Shandong Province(ZR2019BB030,ZR2020ME082);the Science and Technology Support Plan for Youth Innovation of Colleges and Universities of Shandong Province(2021KJ056);the Science Fund of Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai(AMGM2023F13,AMGM2021F05);the Undergraduate Training Program on Innovation and Entrepreneurship of Shandong Province(S202210431016);the Science,Education and Industry Integration of Basic Research Projects of Qilu University of Technology(2023PY022)。

摘　　要：太阳能驱动的半导体光催化技术被认为是缓解能源短缺和环境污染的潜在策略.因此,探索高效的光催化剂是推动光催化技术发展和实际应用的关键.作为一种典型的半导体光催化剂,TiO_(2)因其化学稳定、环境友好、成本低廉等特性而备受关注.然而,TiO_(2)光生载流子的快速复合、光吸收范围窄以及还原能力不足等缺点严重阻碍了其光催化性能.通过将TiO_(2)与其他半导体复合以构建梯型异质结可以有效的解决上述问题.在此光催化体系中,梯型异质结不仅可以整合各组分的优点,实现光生载流子的有效分离和光捕获能力的增强,而且还能保留最强的氧化还原能力.基于此,本文综述了利用构建梯型异质结来提高TiO_(2)光催化性能的最新研究进展,着重介绍了TiO_(2)基梯型异质结光催化剂的分类,主要包括金属氧化物、金属硫属化物、有机半导体和其他类型半导体.在此基础上,本文还总结了TiO_(2)基梯型异质结光催化剂在析氢、CO_(2)还原、H_(2)O_(2)生成和污染物降解等领域中的应用.同时,为了更好地理解光生载流子的转移途径,本文还简要介绍了梯型异质结的一些表征方法.最后,对TiO_(2)基梯型异质结光催化剂所面临的问题和未来的发展方向进行了展望.综上,本文旨在为构建用于能源转换和环境修复的高效TiO_(2)基梯型异质结光催化剂提供参考.Solar-driven semiconductor photocatalysis technology is deemed to be a potential strategy to alleviate environmental crisis and energy shortage.Thus,the exploration of high-efficiency photocatalysts is the key to promoting the development and practical application of photocatalysis technology.As a typical photocatalyst,TiO_(2) has gained extensive attention because of its superb stability,environmental-friendliness,and low price.However,the rapid photoinduced carrier recombination,inadequate light absorption,and insufficient reduction capacity are still the major drawbacks that significantly hamper its photocatalytic performance.Fortunately,the above shortcomings can concurrently overcome by constructing TiO_(2)-based step-scheme(S-scheme)heterojunction photocatalysts with other semiconductors,during which the respective advantages can not only achieve significant spatial carrier separation and robust light-harvesting ability but also preserve the strong redox capacities.Herein,this review presents the latest development in improving the photocatalytic performance of TiO_(2) via the Sscheme heterojunction.Specifically,the classification of TiO_(2)-based S-scheme heterojunction photocatalysts has been detailly described,mainly including metal oxides,metal chalcogenides,organic semiconductors,and other semiconductors.Then,we summarize the current research progress of TiO_(2)-based S-scheme heterojunction photocatalysts in photocatalytic H_(2) evolution,CO_(2) reduction,H_(2)O_(2) production,and pollutant degradation.Simultaneously,various characterization strategies for understanding the photo-induced carrier transfer pathway are also reviewed.Finally,we propose several drawbacks and future prospects in the development of TiO_(2)-based S-scheme heterojunction photocatalysts.It presents an insight into constructing high-efficiency TiO_(2)-based S-scheme heterojunction photocatalysts for energy conversion and environmental remediation.

关 键 词：TiO_(2) step-scheme heterojunction PHOTOCATALYSIS energy conversion environmental remediation 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]