摘要
二氧化钛(TiO2)因廉价、无毒、化学性质稳定以及具有较强的光催化氧化还原能力,在光催化领域占据着重要的地位。然而,可见光利用率低以及光生电子-空穴对的快速复合是限制其应用的2个主要因素。二氧化钛基Z型异质结作为一种新型光催化剂,既改善了二氧化钛的2个缺陷,又表现出比TiO2更强的氧化或还原能力。本文概括了TiO2光催化剂、异质结光催化剂和TiO2基Z型光催化剂的能带排列和电子传递原则,探讨了Z型异质结和type-Ⅱ异质结的异同点以及区分方法,并归纳总结了TiO2基Z型异质结在光催化领域中的应用。
Titanium dioxide (TiO2) is a cheap and non-toxic material with excellent stability and photocatalytic redox ability,therefore it has attracted considerable interest in academy and industry.However,two intrinsic defects have limited its applications,including the low utilization of visible light,and fast recombination of photogenerated electron-hole pairs.These two defects could be remedied by constructing TiO2 based Z-scheme heterojunction which also shows stronger oxidation or reduction properties than TiO2.In this review,we summarized the band alignment and the principles of electron transfer for pure TiO2 photocatalysts,heterojunction photocatalysts and TiO2 based Z-scheme heterojunction photocatalysts.Moreover,we discussed the similarity and difference between Z-scheme heterojunction and type-Ⅱ heterojunction,and some methods to distinguish them were developed.At the end,we tried to summarize applications of the TiO2 based Z-scheme heterojunction in photocatalysis.
作者
梅邱峰
张飞燕
王宁
鲁闻生
宿新泰
王伟
武荣兰
MEI Qiu-Feng;ZHANG Fei-Yan;WANG Ning;LU Wen-Sheng;SU Xin-Tai;WANG Wei;WU Rong-Lan(Key Laboratory of Oil & Gas Fine Chemicals,College of Chemistry and Chemical Engineering of Xinjiang University,Urumqi 830046,China;Key Laboratory of Colloids,Interfaces and Chemical Thermodynamics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100086,China;Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education),School of Environment and Energy of South China University of Technology,Guangzhou 510006,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2019年第8期1321-1339,共19页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21868036)
新疆维吾尔自治区自然科学基金(No.2016D01C037)资助项目
关键词
二氧化钛
Z型异质结
type-Ⅱ异质结
多相催化
环境化学
水分解
二氧化碳还原
titanium dioxide
Z-scheme heterojunction
type-Ⅱ heterojunction
heterogeneous catalysis
environmental chemistry
water splitting
carbon dioxide reduction
