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Photoelectrocatalytic Water Splitting: Significance of Cocatalysts, Electrolyte, and Interfaces
Ding, Chunmei; Shi, Jingying; Wang, Zhiliang; Li, Can1
KeywordPhotoelectrocatalysis Water Splitting Interface Interlayer Cocatalyst Electrolyte
Source PublicationACS CATALYSIS
2017
DOI10.1021/acscatal.6b03107
Volume7Issue:1Pages:675-688
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordATOMIC-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
AbstractThe 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.
Language英语
WOS IDWOS:000391783200075
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/151868
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
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.
APA Ding, Chunmei,Shi, Jingying,Wang, Zhiliang,&Li, Can.(2017).Photoelectrocatalytic Water Splitting: Significance of Cocatalysts, Electrolyte, and Interfaces.ACS CATALYSIS,7(1),675-688.
MLA Ding, Chunmei,et al."Photoelectrocatalytic Water Splitting: Significance of Cocatalysts, Electrolyte, and Interfaces".ACS CATALYSIS 7.1(2017):675-688.
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