Photocatalytic reduction of carbon dioxide to methanol by Cu_2O/SiC nanocrystallite under visible light irradiation  

作　　者：Huiling Li Yonggen Lei Ying Huang Yueping Fang Yuehua Xu Li Zhu Xin Li 

机构地区：[1]Institute of Biomaterial, College of Science, South China Agricultural University, Guangzhou 510642, Guangdong, China [2]The Guangdong Provincial Laboratory of Green Chemical Technology, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, Guangdong, China

出　　处：《Journal of Natural Gas Chemistry》2011年第2期145-150,共6页天然气化学杂志（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 20906034);the Key Academic Program of the 3rd Phase "211 Project" of South China Agricultural University (Grant No. 2009B010100001);China Postdoctoral Science Foundation (Grant No. 20080430820)

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 methanol on SiC, Cu2O and Cu2O/SiC photocatalysts under visible light irradiation were 153, 104 and 191μmol/g, respectively.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 methanol on SiC, Cu2O and Cu2O/SiC photocatalysts under visible light irradiation were 153, 104 and 191μmol/g, respectively.

关 键 词：photocatalytic reduction carbon dioxide heterogeneous catalysts SIC CU2O NANOPARTICLES 

分 类 号：TQ637.3[化学工程—精细化工] TQ116.3