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Controlling shape anisotropy of hexagonal CdS for highly stable and efficient photocatalytic H-2 evolution and photoelectrochemical water splitting
Ma, Yongjin1; Liu, Yi1; Bian, Yuan1; Zhu, Anquan1; Yang, Yang2; Pan, Jun1
KeywordCds-nanorod Photocatalytic H-2 Production Photoelectrochemical Solar To Hydrogen Applied Bias Photon-to-current Efficiency
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
2018-05-15
ISSN0021-9797
DOI10.1016/j.jcis.2018.02.011
Volume518Pages:140-148
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordVISIBLE-LIGHT ; HYDROGEN-PRODUCTION ; PHOTOCORROSION INHIBITION ; H-2-PRODUCTION ACTIVITY ; CHARGE-TRANSFER ; PERFORMANCE ; NANOCRYSTALS ; MORPHOLOGY ; NANORODS ; ARRAYS
AbstractPhotocorrosion and low solar conversion efficiency hindered widely applications of CdS in photocatalytic (PC) H-2 evolution and photoelectrochemical (PEC) water splitting. Hence, this work reports the shape anisotropy of hexagonal CdS possesses highly stable and efficient PC H-2 evolution and PEC water splitting by simply mixed diethylenetriamine (DETA) and deionized water (DIW) solvothermal. Here we demonstrate that the shape of hexagonal CdS plays an important role in their PC activity. The CdS-Nanorod yields optimal 5.4 mmol/g/h PC H-2 production and photocurrent density 2.63 mA/cm(2) at open circuit potential (OCP). The enhanced performance is attributed to the effective separation and transport of the photogenerated electron-hole pairs, which were verified by PL and transisent absorbance. Moreover, hexagonal CdS-Nanorod shows long-term PC H-2 production and highly stable photocurrent density. As compared with CdS-Nanosphere, the hexagonal CdS-Nanorod exhibits 27 times and 19.2 times in H-2 production and photocurrent density, respectively. What's more, STH efficiency of hexagonal CdS-Nanorod is 3.23% and an impressive applied bias photon-to-current efficiency (ABPE) is 2.63% at 0.134 V (vs. RHE). Temperature is also explored and reported. The possible mechanism of PC H-2 evolution and PEC water spiltting are proposed for CdS-Nanorod. This work may provide a promising strategy to fabricate efficient PC and PEC systems for solar-to-fuel energy conversion. (C) 2018 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000429634000017
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
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Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169091
Collection中国科学院大连化学物理研究所
Corresponding AuthorPan, Jun
Affiliation1.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Ma, Yongjin,Liu, Yi,Bian, Yuan,et al. Controlling shape anisotropy of hexagonal CdS for highly stable and efficient photocatalytic H-2 evolution and photoelectrochemical water splitting[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,518:140-148.
APA Ma, Yongjin,Liu, Yi,Bian, Yuan,Zhu, Anquan,Yang, Yang,&Pan, Jun.(2018).Controlling shape anisotropy of hexagonal CdS for highly stable and efficient photocatalytic H-2 evolution and photoelectrochemical water splitting.JOURNAL OF COLLOID AND INTERFACE SCIENCE,518,140-148.
MLA Ma, Yongjin,et al."Controlling shape anisotropy of hexagonal CdS for highly stable and efficient photocatalytic H-2 evolution and photoelectrochemical water splitting".JOURNAL OF COLLOID AND INTERFACE SCIENCE 518(2018):140-148.
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