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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
2019-06-17
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume7Issue:12Pages:10501
SubtypeArticle
AbstractPhotocatalytic 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.
Keywordselective oxidation benzyl alcohol H-2 production dehydrogenation photocatalyst
DOI10.1021/acssuschemeng.9b01017
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27045
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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.
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