Photocatalytic reduction of CO2 in methanol to methyl formate over CuO-TiO2 composite catalysts

被引：184
|
作者：
Qin, Shiyue [1 ]
Xin, Feng [1 ]
Liu, Yuande [1 ]
Yin, Xiaohong [2 ]
Ma, Wei [2 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Tianjin Univ Technol, Sch Chem & Chem Engn, Tianjin 300384, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2011年 / 356卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; Photocatalytic reduction of CO2; Composite semiconductor; Methanol; Methyl formate; CARBON-DIOXIDE; PHOTOREDUCTION; TIO2; H-2; CONVERSION; GAS;
D O I：
10.1016/j.jcis.2010.12.034
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：
Photocatalytic reduction of CO2 on CuO-TiO2 composite catalysts in the presence of methanol to prepare methyl formate had been investigated. Methanol was used as sacrificial reagent to react with the photogenerated holes in the valence band, and CO2 was reduced by the electrons in the conduction band. CuO-TiO2 was optimized for CuO loading, preparation method and calcination temperature. The catalyst of 1.0CuO-TiO2, calcined at 450 degrees C and CTAB as a dispersant showed the highest overall activity. The heterojunction between CuO and TiO2 demonstrated with HRTEM played an important role in enhancing the photocatalytic activity. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：257 / 261
页数：5
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