Internal electric field engineering for steering photogenerated charge separation and enhancing photoactivity

被引：182
作者：
Guo, Yan [1 ]
Shi, Wenxin [2 ]
Zhu, Yongfa [3 ]
机构：
[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Sch Environm, Harbin, Peoples R China
[2] Chongqing Univ, Sch Environm & Ecol, Chongqing, Peoples R China
[3] Tsinghua Univ, Dept Chem, Beijing, Peoples R China
来源：
ECOMAT | 2019年 / 1卷 / 01期
基金：
中国国家自然科学基金;
关键词：
built-in electric field; internal electric field; photocatalysis; photogenerated charge separation;
D O I：
10.1002/eom2.12007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Photocatalysis as a desirable technology shows great potential in environmental remediation and renewable energy generation, but the recombination of photogenerated carriers is a key limiting factor for efficiency in artificial photosynthesis. Internal electric field (IEF, also known as built-in electric field) engineering acts an emerging and clearly viable route to increase photocatalytic efficiency by facilitating charge separation and transfer. This review summarizes the basic principles of IEF including the source, the strategies for the enhancement and the measurement of IEF. Highlight is the recent progress in steering photogenerated charge separation of photocatalysts by IEF engineering and related mechanisms. Finally, the challenges in IEF engineering and exciting opportunities to further enhancing charge separation and photocatalytic performance are discussed.
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页数：20
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