Interfacial Charge Transport in 1D TiO2 Based Photoelectrodes for Photoelectrochemical Water Splitting.
Interfacial Charge Transport in 1D TiO2 Based Photoelectrodes for Photoelectrochemical Water Splitting.
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DOI：
10.1002/smll.201903378
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发表时间：
2019-10
期刊：
影响因子：
13.3
通讯作者：
Zhongrui Yu;Haobo Liu;Mingyuan Zhu;Ying Li;Wenxian Li
中科院分区：
文献类型：
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作者：
Zhongrui Yu;Haobo Liu;Mingyuan Zhu;Ying Li;Wenxian Li
一维纳米结构光电极具有光学、结构和电学等方面的优势，有望作为光电化学(PEC)器件应用于太阳能转化为氢(H2)。二氧化钛具有光稳定性好、生产成本低、环境友好等优点，是目前研究最多的光电极候选材料。阻碍二氧化钛S实际应用的障碍是其固有的宽禁带(紫外光响应)、较差的导电性和有限的空穴扩散长度。本文综述了用于非均相PEC水分解的一维TiO2光电极的研究现状，并讨论了纳米结构和能带工程对不同维光活性材料复合的一维TiO2光电极界面电荷转移和分离的影响。本综述的重点是了解界面上的电荷转移过程以及光生电荷分离与光电化学性能之间的关系。预计这一综述将为实现高效太阳能转换的一维二氧化钛基光电极的纳米结构、掺杂和异质结界面的合理设计提供丰富的信息。
1D nanostructured photoelectrodes are promising for application as photoelectrochemical (PEC) devices for solar energy conversion into hydrogen (H2 ) owing to the optical, structural, and electronic advantages. Titanium dioxide (TiO2 ) is the most investigated candidate as a photoelectrode due to its good photostability, low production cost, and eco-friendliness. The obstacle for TiO2 's practical application is the inherent wide bandgap (UV-lights response), poor conductivity, and limited hole diffusion length. Here, a comprehensive review of the current research efforts toward the development of 1D TiO2 based photoelectrodes for heterogeneous PEC water splitting is provided along with a discussion of nanoarchitectures and energy band engineering influences on interfacial charge transfer and separation of 1D TiO2 composited with different dimensional photoactive materials. The key focus of this review is to understand the charge transfer processes at interfaces and the relationship between photogenerated charge separation and photoelectrochemical performance. It is anticipated that this review will afford enriched information on the rational designs of nanoarchitectures, doping, and heterojunction interfaces for 1D TiO2 based photoelectrodes to achieve highly efficient solar energy conversion.