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Roles of cocatalysts in Pt-PdS/CdS with exceptionally high quantum efficiency for photocatalytic hydrogen production
Yang, Jinhui1,2; Yan, Hongjian1; Wang, Xiuli1; Wen, Fuyu1,2; Wang, Zhijun1,2; Fan, Dayong1,2; Shi, Jingying1; Li, Can1
关键词Pt-pds/cds Cocatalyst Quantum Efficiency Photocatalysis Photoelectrochemistry Photoluminescence
刊名JOURNAL OF CATALYSIS
2012-06-01
DOI10.1016/j.jcat.2012.03.008
290页:151-157
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]VISIBLE-LIGHT IRRADIATION ; CDS ; WATER ; EVOLUTION ; ENHANCEMENT ; MECHANISMS ; CATALYST ; H2S ; H-2
英文摘要The essentials of the exceptionally high quantum efficiency (93%) of photocatalytic hydrogen production on Pt-PdS/CdS have been investigated by studying the roles of the dual cocatalysts Pt and PdS in photocatalysis. In situ photoelectrochemical measurements, photoluminescence spectroscopy and high-resolution transmission electron microscopy characterizations indicate that the exceptionally high QE can be attributed to vital factors including PdS and Pt as the oxidation and reduction cocatalysts, respectively; the efficient utilization of the photogenerated electrons, including those at the shallow trap states of CdS, for photocatalytic reactions: and the facial charge transfer between the cocatalysts and CdS through atomic heterojunctions. Combinations of Pt with other metal sulfides and PdS with other noble metals as dual cocatalysts also show an evident synergetic effect on the activity. The co-loading of Pt and PdS on other sulfide semiconductors results in the same enhancement of photocatalytic activity. It is proposed that the crucial role of dual cocatalysts is general for photocatalysis. (c) 2012 Elsevier Inc. All rights reserved.
语种英语
WOS记录号WOS:000305098400016
引用统计
被引频次:167[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143144
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Yang, Jinhui,Yan, Hongjian,Wang, Xiuli,et al. Roles of cocatalysts in Pt-PdS/CdS with exceptionally high quantum efficiency for photocatalytic hydrogen production[J]. JOURNAL OF CATALYSIS,2012,290:151-157.
APA Yang, Jinhui.,Yan, Hongjian.,Wang, Xiuli.,Wen, Fuyu.,Wang, Zhijun.,...&Li, Can.(2012).Roles of cocatalysts in Pt-PdS/CdS with exceptionally high quantum efficiency for photocatalytic hydrogen production.JOURNAL OF CATALYSIS,290,151-157.
MLA Yang, Jinhui,et al."Roles of cocatalysts in Pt-PdS/CdS with exceptionally high quantum efficiency for photocatalytic hydrogen production".JOURNAL OF CATALYSIS 290(2012):151-157.
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