Surface step decoration of isolated atom as electron pumping: Atomic-level insights into visible-light hydrogen evolution

doi:10.1016/j.nanoen.2017.12.039

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	Surface step decoration of isolated atom as electron pumping: Atomic-level insights into visible-light hydrogen evolution
	Wu, X; Zhang, HB; Dong, JC; Qiu, M; Kong, JT; Zhang, YF; Li, Y; Xu, GL; Zhang, J; Ye, JH; Dong JC(董俊才)
	2018
发表期刊	NANO ENERGY (IF:12.343[JCR-2016],12.924[5-Year])
ISSN	2211-2855
EISSN	2211-3282
卷号	45 页码:109-117
文章类型	Article
摘要	Here we realize the decoration of isolated platinum atoms onto the surface step of CdS nanowires. The single-atom co-catalyst with high stability can realize maximum atom efficiency and significantly boost electron-hole separation efficiency in chromophore units, generating a greatly enhanced photocatalytic hydrogen evolution performance, 7.69 times as high as Pt nanoparticles do and 63.77 times higher than that of bare CdS nanowires. Directional migrations of photogenerated excitons from the conduction band of CdS to catalytic platinum centers have been witnessed by transient absorption spectroscopy, leading to the supply of long-lived electrons for highly efficient photocatalytic hydrogen evolution. Density functional theory calculations further confirm that the excellent catalytic performance is associated with positively charged platinum sites with partially vacant 5d orbitals, which change distribution of charge density and facilitate higher excited carrier density.
关键词	Isolated atom Surface step Hydrogen evolution Electron pumping Catalysis
DOI	10.1016/j.nanoen.2017.12.039
关键词[WOS]	INITIO MOLECULAR-DYNAMICS ; PHOTOCATALYTIC H-2 EVOLUTION ; AUGMENTED-WAVE METHOD ; SINGLE-ATOM ; PREFERENTIAL OXIDATION ; CERIA CATALYSTS ; CDS NANOWIRES ; SEMICONDUCTOR ; GRAPHENE ; METALS
收录类别	SCI ; ADS ; EI
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000425396400014
EI入藏号	20180104603590
ADS Bibcode	2018NEne...45..109W
ADS URL	https://ui.adsabs.harvard.edu/abs/2018NEne...45..109W
ADS引文	https://ui.adsabs.harvard.edu/abs/2018NEne...45..109W/citations
引用统计	正在获取... 被引频次：33 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/285663
专题	加速器中心多学科研究中心
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wu, X,Zhang, HB,Dong, JC,et al. Surface step decoration of isolated atom as electron pumping: Atomic-level insights into visible-light hydrogen evolution[J]. NANO ENERGY,2018,45:109-117.
APA	Wu, X.,Zhang, HB.,Dong, JC.,Qiu, M.,Kong, JT.,...&董俊才.(2018).Surface step decoration of isolated atom as electron pumping: Atomic-level insights into visible-light hydrogen evolution.NANO ENERGY,45,109-117.
MLA	Wu, X,et al."Surface step decoration of isolated atom as electron pumping: Atomic-level insights into visible-light hydrogen evolution".NANO ENERGY 45(2018):109-117.