Single-site Sn-grafted Ru/TiO2 photocatalysts for biomass reforming: Synergistic effect of dual co-catalysts and molecular mechanism

被引：88

作者：

Gu, Quan ^{[1
]}

Long, Jinlin ^{[1
]}

Fan, Lizhou ^{[1
]}

Chen, Liming ^{[1
]}

Zhao, Lulu ^{[1
]}

Lin, Huaxiang ^{[1
]}

Wang, Xuxu ^{[1
]}

机构：

[1] Fuzhou Univ, Res Inst Photocatalysis, Fujian Prov Key Lab Photocatalysis, State Key Lab Breeding Base, Fuzhou 350002, Peoples R China

来源：

JOURNAL OF CATALYSIS | 2013年 / 303卷

基金：

美国国家科学基金会;

关键词：

Photocatalysis; TiO2; Anatase; Hydrogen production; Biomass reforming; RuO2; Single-site tin; Photoelectrolysis cell; HYDROGEN-PRODUCTION; METHYL FORMATE; TIO2; OXIDATION; WATER; FTIR; ADSORPTION; NANOPARTICLES; CATALYSTS; ETHANOL;

D O I：

10.1016/j.jcat.2013.03.014

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：

This work offers an engineering guide to obtaining highly efficient photocatalysts for hydrogen production. Synergetic enhancement of photocatalytic hydrogen evolution from biomass/water solution is achieved by co-modifying anatase TiO2 with single-site Sn-oxo species and RuO2 nanoparticles. Detailed characterization and analysis clearly reveal that such TiO2-based composites can function as photoelectrolysis cells, where RuO2 and SnOx species serve, respectively, as an anode and a cathode and TiO2 is mainly responsible for the conversion of photons into electrical energy and the (OH)-O-center dot formation. Electron paramagnetic resonance and infrared spectroscopy studies suggest a free radical reaction pathway triggered by the hole oxidation for the photocatalytic reforming of biomass. The CxHyOz renewables undergo one or more processes for the sequential oxidation of alcohol to aldehyde, acid, and finally CO2 and CO. The activity results indicate that proton reduction is the controlling-rate step of the overall photoreforming reaction. (c) 2013 Elsevier Inc. All rights reserved.

引用

页码：141 / 155

页数：15

共 53 条

[21] AN ELECTRON-PARAMAGNETIC RESONANCE STUDY OF THE INTERACTIONS BETWEEN THE ADRIAMYCIN SEMIQUINONE, HYDROGEN-PEROXIDE, IRON-CHELATORS, AND RADICAL SCAVENGERS [J].