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学科主题: 物理化学
题名: Sulfurization-Assisted Cobalt Deposition on Sm2Ti2S2O5 Photocatalyst for Water Oxidation under Visible Light Irradiation
作者: Li, Rengui1, 2;  Chen, Zheng1, 2;  Zhao, Wen3;  Zhang, Fuxiang1;  Maeda, Kazuhiko3, 4;  Huang, Baokun1;  Shen, Shuai1, 2;  Domen, Kazunari3;  Li, Can1
通讯作者: KazunariDomen ;  李灿
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2013-01-10
DOI: 10.1021/jp310138b
卷: 117, 期:1, 页:376-382
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 503
产权排名: 1,1
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: Deposition of cocatalyst is an efficient way for photocatalytic water splitting to improve solar energy conversion efficiency, and its deposition method has been known to make a great effect. In this work, we introduced a sulfurization-assisted deposition method to load earth-abundant cobalt cocatalyst for the purpose of promoting water oxidation performance of Sm2Ti2S2O5 oxysulfide that is characterized with wide visible light absorption. The cobalt deposition introduced here undergoes first formation of CoSx by sulfurization at high temperature and subsequent conversion into CoOx by calcinations in air. Compared to conventionally impregnated cobalt or IrO2 colloids, the sulfurization-assisted cobalt deposition well maintains structure of photocatalyst and inhibits the formation of defect sites leading to better separation of photogenerated carriers and water oxidation performance. The apparent quantum efficiency of the optimized sample reaches 5.0% at 420 nm. The sulfurization-assisted deposition actually open a new way to modify the (oxy)sulfide semiconductors.
关键词[WOS]: ARTIFICIAL PHOTOSYNTHESIS ;  OXYSULFIDE SM2TI2S2O5 ;  HYDROGEN-PRODUCTION ;  REDUCTION ;  OXYGEN ;  SPECTROSCOPY ;  LATIO2N ;  NM ;  TEMPERATURE ;  OXYNITRIDE
语种: 英语
WOS记录号: WOS:000313220700050
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117682
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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan
4.Japan Sci & Technol Agcy JST, Precursory Res Embryon Sci & Technol PRESTO, Kawaguchi, Saitama 3320012, Japan

Recommended Citation:
Li, Rengui,Chen, Zheng,Zhao, Wen,et al. Sulfurization-Assisted Cobalt Deposition on Sm2Ti2S2O5 Photocatalyst for Water Oxidation under Visible Light Irradiation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(1):376-382.
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