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题名: Relation between the Photocatalytic and Photoelectrocatalytic Performance for the Particulate Semiconductor-Based Photoconversion Systems with Surface Phase Junction Structure
作者: Wang, Xiang1;  Jin, Shaoqing1, 2;  An, Hongyu1;  Wang, Xiuli1;  Feng, Zhaochi1;  Li, Can1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2015-10-01
DOI: 10.1021/acs.jpcc.5b06347
卷: 119, 期:39, 页:22460-22464
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Although the surface phase junction can efficiently boost photocatalytic (PC) reactions, its role in photoelectrocatalytic (PEC) reactions has not been well-understood yet. In this study, we investigated the effect of the surface phase junction on the PEC performance of photoelectrodes fabricated with Ga2O3 and TiO2 particles. The surface phase junctions beneficial for PC reactions show a negative effect on PEC performance, which is mainly due to the significant influence of charge transportation between semiconductor particles by the surface phase junction. Photogenerated charge separation is promoted by the surface phase junction for both PC and PEC reactions, but the much more severe interfacial recombination occurs in the PEC reaction when charge carriers migrate across semiconductor particles to reach a conducting substrate. The opposite effects of the surface phase junction on PC and PEC performance reported here indicates that the fabrication of a heterojunction or phase junction in the right structure and sequence is vital to PEC systems based on junction, which will be helpful for the development of highly efficient photoconversion systems.
关键词[WOS]: TIO2 ;  GA2O3 ;  TRANSFORMATION ;  SPECTROSCOPY ;  ENHANCEMENT ;  PHOTOANODES ;  COCATALYST ;  CATALYST ;  H2O ;  H-2
语种: 英语
WOS记录号: WOS:000362385700023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146585
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Xiang,Jin, Shaoqing,An, Hongyu,et al. Relation between the Photocatalytic and Photoelectrocatalytic Performance for the Particulate Semiconductor-Based Photoconversion Systems with Surface Phase Junction Structure[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(39):22460-22464.
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