Photocatalytic Hydrogen Evolution Coupled with Efficient Selective Benzaldehyde Production from Benzyl Alcohol Aqueous Solution over ZnS-NixSy Composites

doi:10.1021/acssuschemeng.9b01017

	Photocatalytic Hydrogen Evolution Coupled with Efficient Selective Benzaldehyde Production from Benzyl Alcohol Aqueous Solution over ZnS-NixSy Composites
	Hao, Hongchang; Zhang, Ling; Wang, Wenzhong; Qiao, Simeng; Liu, Xuechen
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2019-06-17
卷号	7 期号:12 页码:10501
关键词	selective oxidation benzyl alcohol H-2 production dehydrogenation photocatalyst
ISSN号	2168-0485
DOI	10.1021/acssuschemeng.9b01017
文献子类	Article
英文摘要	Photocatalytic hydroxy group transformation to carbonyl is an important application in organic chemistry. It seems challenging to acquire great selectivity toward carbonyl products in green water solution, especially for the wide-bandgap semiconductors which always need to seek assistance from organic media like acetonitrile. Herein, we cast off the dependence on such organic solvents and develop an efficient NixSy modification on ZnS nanorods, for selective oxidation of benzyl alcohols coupled with H-2 evolution in anaerobic water. The ternary augmentation in H-2 production, alcohol conversion, and, more strikingly, benzaldehyde selectivity (from 8.1% to 90.5%) was simultaneously achieved by loading NixSy cocatalysts. Mechanism investigations indicated a striking transformation from hole-predominant oxidation on ZnS surface to an electron-initiating dehydrogenation of alcohols on NixSy nanoparticles. Besides, NixSy nanoparticles tend to swiftly desorb the produced benzaldehyde, thereby resulting in promoted selectivity. Particularly, the catalysts performed much greater benzyl alcohol transformation efficiency in corresponding aqueous solution than they did in acetonitrile, where little aldehyde remained. Overall, the study reveals the inspiring roles of NixSy as a selective dehydrogenation unit and a hydrogen evolution cocatalyst, therefore enabling ZnS in efficient selective benzyl alcohol transformation coupled with hydrogen evolution in green aqueous solution.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27045]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Hao, Hongchang,Zhang, Ling,Wang, Wenzhong,et al. Photocatalytic Hydrogen Evolution Coupled with Efficient Selective Benzaldehyde Production from Benzyl Alcohol Aqueous Solution over ZnS-NixSy Composites[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(12):10501.
APA	Hao, Hongchang,Zhang, Ling,Wang, Wenzhong,Qiao, Simeng,&Liu, Xuechen.(2019).Photocatalytic Hydrogen Evolution Coupled with Efficient Selective Benzaldehyde Production from Benzyl Alcohol Aqueous Solution over ZnS-NixSy Composites.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(12),10501.
MLA	Hao, Hongchang,et al."Photocatalytic Hydrogen Evolution Coupled with Efficient Selective Benzaldehyde Production from Benzyl Alcohol Aqueous Solution over ZnS-NixSy Composites".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.12(2019):10501.