文献类型：期刊文献

英文题名：3DOM-LaSrCoFeO6-δ as a highly active catalyst for the thermal and photothermal reduction of CO2 with H2O to CH4

作者：Minh Ngoc Ha[1,2,3];Lu, Guanzhong[1,2];Liu, Zhifu[2];Wang, Lichao[2];Zhao, Zhe[2]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China;[3]Vietnam Natl Univ, Hanoi Univ Sci, Fac Chem, Hanoi 10000, Vietnam

年份：2016

卷号：4

期号：34

起止页码：13155

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20163602768512);WOS:【SCI-EXPANDED(收录号:WOS:000382110200016)】；

基金：We gratefully acknowledge the financial support from the program for young scientists (YangFan Program, 14YF1410800) of the Science and Technology Commission of Shanghai Municipality, the young teachers training scheme of the Shanghai Municipal Education Commission (ZZyy15085, ZZyy15086), the program of introducing talents of the Shanghai Institute of Technology (YJ2014-42) and the special fund to support the development of local colleges of the Ministry of Finance of China.

语种：英文

外文关键词：Iron compounds - Energy conversion efficiency - Strontium compounds - Catalyst selectivity - Crystal structure - Carbon dioxide - Energy gap - Perovskite

摘要：Double perovskites LaSrCoFeO6-delta (LSCF) and LaSrCoFeO6-delta with a three-dimensionally ordered macroporous structure (3DOM-LSCF) were successfully synthesized by a facile combustion process. Their crystal structure, morphology, BET surface area, band gap and catalytic properties were characterized in detail. Phase pure double perovskites LSCF and 3DOM-LSCF can be obtained by calcination at 550-950 degrees C for 4 h. The ordered and interconnected pore structure generated by using a PMMA template can be maintained successfully in the 3DOM-LSCF catalyst. Both catalysts had good catalytic performance in either CH4 selectivity or total yield. Production of CH4 from CO2 and H2O can reach 351.32 mu mol g(-1) for LSCF and 557.88 mu mol g(-1) for 3DOM-LSCF under photothermal conditions (350 degrees C + vis-light) in 8 h. The high solar-to-methane (STM) energy conversion efficiency was 1.217% for LSCF and 1.933% for 3DOM-LSCF in the photothermal mode. The results also show that the yield of CH4 in the photothermal mode is 5 times that in the thermal reduction mode. The double perovskites LSCF and 3DOM-LSCF are promising catalytic materials for the photothermal reduction of CO2 to hydrocarbon fuels.