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Direct Coupling of Thermo‐ and Photocatalysis for Conversion of CO 2 –H 2 O into Fuels
Author(s) -
Zhang Li,
Kong Guoguo,
Meng Yaping,
Tian Jinshu,
Zhang Lijie,
Wan Shaolong,
Lin Jingdong,
Wang Yong
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701472
Subject(s) - photocatalysis , water splitting , hydrogen , renewable energy , materials science , catalysis , hydrocarbon , solar energy , coupling (piping) , photocatalytic water splitting , hydrogen fuel , selectivity , renewable fuels , photochemistry , chemical engineering , chemistry , fossil fuel , organic chemistry , biology , engineering , ecology , electrical engineering , metallurgy
Photocatalytic CO 2 reduction into renewable hydrocarbon solar fuels is considered as a promising strategy to simultaneously address global energy and environmental issues. This study focused on the direct coupling of photocatalytic water splitting and thermocatalytic hydrogenation of CO 2 in the conversion of CO 2 –H 2 O into fuels. Specifically, it was found that direct coupling of thermo‐ and photocatalysis over Au−Ru/TiO 2 leads to activity 15 times higher ( T =358 K; ca. 99 % CH 4 selectivity) in the conversion of CO 2 –H 2 O into fuels than that of photocatalytic water splitting. This is ascribed to the promoting effect of thermocatalytic hydrogenation of CO 2 by hydrogen atoms generated in situ by photocatalytic water splitting.