Inhibition of CdS photocorrosion by Al2O3 shell for highly stable photocatalytic overall water splitting under visible light irradiation

doi:10.1016/j.apcatb.2017.12.067

	Inhibition of CdS photocorrosion by Al2O3 shell for highly stable photocatalytic overall water splitting under visible light irradiation
Department	OSSO国家重点实验室
	Ning XF(宁晓峰)1,2; Zhen WL(甄文龙)1; Wu YQ(吴玉琪)1 ; Lu GX(吕功煊)1 ; Wu YQ(吴玉琪); Lv GX(吕功煊)
	2018
Source Publication	Applied Catalysis B: Environmental
ISSN	0926-3373
Volume	226 Issue:0 Pages:373-383
Abstract	Efficiency and stability are the two key points for CdS photocatalyst because its application has been seriously restricted owing to serious photocorrosion issue and the recombination of photo-induced charge pairs. In this paper, CdS nanoparticles (NPs) were surface-modified by chemical inert Al₂O₃ shell. This modification could prevent nascent formed oxygen induced photo-corrosion and enhance the photo-stability of CdS during water splitting significantly. In addition, it was found that such a shell could enhance efficient separation of photo-induced charge pairs. Besides, with the assistance of artificial gill of removing nascent formed O₂ from water, Pt/CdS@Al₂O₃ photocatalyst can achieve overall water splitting under visible light irradiation. The rate of H₂ evolution increased 126 times over Pt/CdS@Al₂O₃ composite compared with pure CdS NPs, and the stability was maintained in several cycles of reaction without any decrease. The measurement of concentration of Cd²⁺ in solution after long cycles by ICP method confirmed this anti-photo-corrosion property of Al₂O₃ shell on CdS. This work provides a new potential way to design and fabricate more stable and efficient CdS-based nanocomposite photocatalysts for versatile solar energy conversion.
Keyword	Inhibition Of Cds Photocorrosion Inert Al2o3 Shell Visible Light-driven Pt/cds@al2o3 Overall Water Splitting Artificial Gill
Subject Area	物理化学与绿色催化
DOI	10.1016/j.apcatb.2017.12.067
Funding Organization	the NSFC (Grant Nos. 21673262 ; 21433007)
Indexed By	SCI
If	11.698
Language	英语
Funding Project	环境催化与氢能研究组
compositor	第一作者单位
Citation statistics	Cited Times:160[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.licp.cn/handle/362003/23704
Collection	羰基合成与选择氧化国家重点实验室（OSSO）
Corresponding Author	Wu YQ(吴玉琪); Lv GX(吕功煊)
Affiliation	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Ning XF,Zhen WL,Wu YQ,et al. Inhibition of CdS photocorrosion by Al2O3 shell for highly stable photocatalytic overall water splitting under visible light irradiation[J]. Applied Catalysis B: Environmental,2018,226(0):373-383.
APA	Ning XF,Zhen WL,Wu YQ,Lu GX,Wu YQ,&Lv GX.(2018).Inhibition of CdS photocorrosion by Al2O3 shell for highly stable photocatalytic overall water splitting under visible light irradiation.Applied Catalysis B: Environmental,226(0),373-383.
MLA	Ning XF,et al."Inhibition of CdS photocorrosion by Al2O3 shell for highly stable photocatalytic overall water splitting under visible light irradiation".Applied Catalysis B: Environmental 226.0(2018):373-383.

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