Simultaneous oxidation of alcohols and hydrogen evolution in a hybrid system under visible light irradiation

被引：79

作者：

Li, Fei ^{[1
]}

Wang, Yong ^{[1
]}

Du, Jian ^{[1
]}

Zhu, Yong ^{[1
]}

Xu, Congying ^{[1
]}

Sun, Licheng ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, DUT KTH Joint Educ & Res Ctr Mol Devices, State Key Lab Fine Chem, Dalian 116024, Peoples R China

[2] KTH Royal Inst Technol, Sch Chem Sci & Engn, Dept Chem, S-10044 Stockholm, Sweden

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 225卷

基金：

中国国家自然科学基金;

关键词：

Photocatalysis; Selective oxidation of alcohol; Hydrogen evolution; Molecular catalyst; Hybrid system; CARBON NITRIDE SEMICONDUCTORS; SELECTIVE OXIDATION; ENERGY-CONVERSION; BENZYL ALCOHOL; CO2; REDUCTION; WATER; PHOTOCATALYST; BIOMASS; DEHYDROGENATION; OXYGENATION;

D O I：

10.1016/j.apcatb.2017.11.072

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Water oxidation as a multi-electron transfer and endothermal reaction has been considered to be the bottleneck of solar-driven water splitting into oxygen and hydrogen. Herein, an alternative approach for solar energy conversion is developed by coupling Hy generation with the selective oxidation of alcohol. In a closed redox system containing molecular ruthenium catalyst (RuCat) and Pt modified g-C3N4 (Pt-g-C3N4) composite, hydrogen production is concomitant with the oxidation of benzyl alcohols to aldehydes with over 99% selectivity in the presence of visible light and pure water. By contrary, the system lacking molecular catalyst only exhibits low to moderate selectivities towards aldehydes. The remarkably improved selectivity is attributed to the formation of highly active Ru(IV) = O intermediate through efficient hole transfer from g-C3N4 to RuCat.

引用

页码：258 / 263

页数：6

共 38 条

[1] Hydrogen Storage and Energy Recovery Using Aldehydes and Ketones: A Key Role for Catalysis [J].