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题名: Photoelectrocatalytic Water Splitting: Significance of Cocatalysts, Electrolyte, and Interfaces
作者: Ding, Chunmei;  Shi, Jingying;  Wang, Zhiliang;  Li, Can1
关键词: photoelectrocatalysis ;  water splitting ;  interface ;  interlayer ;  cocatalyst ;  electrolyte
刊名: ACS CATALYSIS
发表日期: 2017
DOI: 10.1021/acscatal.6b03107
卷: 7, 期:1, 页:675-688
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The efficiency of photoelectrocatalytic (PEC) water splitting is limited by the serious recombination of photogenerated charges, high overpotential, and sluggish kinetics of surface reaction. Herein we describe the recent progress on engineering the electrode-electrolyte and semi-conductor-cocatalyst interfaces with cocatalysts, electrolytes, and interfacial layers (interlayers) to increase the PEC efficiency. Introducing cocatalysts has been demonstrated to be the most efficient way to lower the reaction barrier and promote charge injection to the reactants. In addition, it has been found that electrolyte ions can influence the surface catalysis remarkably. Electrolyte cations on the surface can influence the water splitting and backward reactions, and anions may take part in the proton transfer processes, indicating that fine-tuning of the electrolyte parameters turns out to be an important strategy for enhancing the PEC efficiency. Moreover, careful modification of the interface between the cocatalysts and the semiconductor via suitable interlayers is critical for promoting charge separation and transfer, which can indirectly influence the surface catalysis. The mechanisms of surface catalysis are assumed to involve transfer of photogenerated holes to the surface active sites to form high-valent species, which then oxidize the water molecules. Many key scientific issues about the generation of photovoltage, the separation, storage, and transfer of carriers, the function of cocatalysts, the roles of electrolyte ions, and the influences of other parameters during PEC water splitting will be discussed in detail with some perspective views.
关键词[WOS]: ATOMIC-LAYER DEPOSITION ;  TANTALUM NITRIDE PHOTOANODE ;  OXYGEN-EVOLUTION CATALYSTS ;  DOPED HEMATITE PHOTOANODE ;  SOLAR HYDROGEN-PRODUCTION ;  TA3N5 NANOROD ARRAYS ;  HOLE-STORAGE-LAYER ;  OXIDATION CATALYSTS ;  SILICON PHOTOANODES ;  VISIBLE-LIGHT
语种: 英语
WOS记录号: WOS:000391783200075
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151868
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Ding, Chunmei,Shi, Jingying,Wang, Zhiliang,et al. Photoelectrocatalytic Water Splitting: Significance of Cocatalysts, Electrolyte, and Interfaces[J]. ACS CATALYSIS,2017,7(1):675-688.
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