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Spatial separation of dual-cocatalysts on one-dimensional semiconductors for photocatalytic hydrogen production

文献类型：期刊论文

作者Khan, Khakemin1,2; Tao, Xiaoping1; Zhao, Yue1,2; Zeng, Bin1,2; Shi, Ming1,2; Ta, Na1; Li, Jianming3; Jin, Xu3; Li, Rengui1; Li, Can1
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2019-07-14
卷号7期号:26页码:15607-15614
ISSN号2050-7488
DOI10.1039/c9ta03090e
通讯作者Li, Rengui(rgli@dicp.ac.cn) ; Li, Can(canli@dicp.ac.cn)
英文摘要Light-driven hydrogen production using semiconductor photocatalysts has gained much interest owing to their ability to store sunlight in the form of portable chemical fuel. The spatial separation of dual-cocatalysts onto different surfaces has been considered as a useful strategy for fabricating dynamic particulate photocatalysts to hinder charge recombination and reverse reactions. Herein, using one-dimensional (1D) semiconductors, CdSe nanorods as an example, we experimentally demonstrated that photogenerated electrons and holes can be effectively separated along different directions of a 1D semiconductor. Following this phenomenon, the reduction cocatalyst Pt and oxidation cocatalyst PdS were spatially deposited on different sites via an in situ photodeposition process, which drastically enhanced the photocatalytic activity for hydrogen production to more than 20 times, thus exhibiting an extremely high apparent quantum efficiency (AQE) of similar to 45% at 420 nm. Further studies using photoluminescence spectroscopy indicated that the spatially separated dual-cocatalysts efficiently captured the photogenerated electrons and holes migrating to the surface, which greatly decreased the recombination of charge carriers and consequently led to superior photocatalytic performances. Our work provides an effective strategy for the rational construction of highly efficient photocatalyst systems based on (quasi) 1D semiconductors for artificial solar energy conversion.
WOS关键词CHARGE SEPARATION ; WATER ; NANOCRYSTALS ; GENERATION ; NANOWIRES ; CHEMISTRY ; PHYSICS
资助项目Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDY-SSW-JSC023] ; National Natural Science Foundation of China[21673230] ; National Natural Science Foundation of China[21761142018] ; Dalian Institute of Chemical Physics[DICP ZZBS201610] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2016167] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA21010207] ; R&D department of Petro China
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000474271200008
出版者ROYAL SOC CHEMISTRY
资助机构Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; R&D department of Petro China ; R&D department of Petro China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; R&D department of Petro China ; R&D department of Petro China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; R&D department of Petro China ; R&D department of Petro China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Institute of Chemical Physics ; Dalian Institute of Chemical Physics ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; R&D department of Petro China ; R&D department of Petro China
源URL[http://cas-ir.dicp.ac.cn/handle/321008/175453]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Li, Rengui; Li, Can
作者单位1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy,Collaborat Innovat C, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.PetroChina, RIPED, 20 Xueyuan Rd, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Khan, Khakemin,Tao, Xiaoping,Zhao, Yue,et al. Spatial separation of dual-cocatalysts on one-dimensional semiconductors for photocatalytic hydrogen production[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(26):15607-15614.
APA Khan, Khakemin.,Tao, Xiaoping.,Zhao, Yue.,Zeng, Bin.,Shi, Ming.,...&Li, Can.(2019).Spatial separation of dual-cocatalysts on one-dimensional semiconductors for photocatalytic hydrogen production.JOURNAL OF MATERIALS CHEMISTRY A,7(26),15607-15614.
MLA Khan, Khakemin,et al."Spatial separation of dual-cocatalysts on one-dimensional semiconductors for photocatalytic hydrogen production".JOURNAL OF MATERIALS CHEMISTRY A 7.26(2019):15607-15614.

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来源：大连化学物理研究所

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