Photocatalytic reduction of carbon dioxide to methanol by Cu2O/SiC nanocrystallite under visible light irradiation

被引：115
|
作者：
Li, Huiling [1 ]
Lei, Yonggen [1 ]
Huang, Ying [1 ]
Fang, Yueping [1 ]
Xu, Yuehua [1 ]
Zhu, Li [1 ]
Li, Xin [1 ,2 ]
机构：
[1] S China Agr Univ, Inst Biomat, Coll Sci, Guangzhou 510642, Guangdong, Peoples R China
[2] S China Univ Technol, Guangdong Prov Lab Green Chem Technol, Sch Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China
来源：
JOURNAL OF NATURAL GAS CHEMISTRY | 2011年 / 20卷 / 02期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
photocatalytic reduction; carbon dioxide; heterogeneous catalysts; SiC; Cu2O; nanoparticles; DESORPTION ACTIVATION-ENERGY; CHEMICAL-VAPOR-DEPOSITION; WATER-VAPOR; SEMICONDUCTOR PHOTOCATALYSIS; PARTIAL OXIDATION; SILICA-GELS; CO2; PHOTOREDUCTION; CATALYSTS; POWDERS;
D O I：
10.1016/S1003-9953(10)60166-1
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The Cu2O/SiC photocatalyst was obtained from SiC nanoparticles (NPs) modified by Cu2O. Their photocatalytic activities for reducing CO2 to CH3OH under visible light irradiation have been investigated. The results indicated that besides a small quantity of 6H-SiC, SiC NPs mainly consisted of 3C-SiC. The band gaps of SiC and Cu2O were estimated to be about 1.95 and 2.23 eV from UV-Vis spectra, respectively. The Cu2O modification can enhance the photocatalytic performance of SiC NPs, and the largest yields of meth tool on SiC, Cu2O and Cu2O/SiC photocatalysts under visible light irradiation were 153, 104 and 191 mu mol/g, respectively.
引用
收藏
页码：145 / 150
页数：6
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