Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 23, Pages 7708-7712Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201902324
Keywords
CuOx; oxygen vacancy; photocatalysis; photothermal catalysis; water-gas shift (WGS) reaction
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Funding
- National Natural Science Foundation of China [21573158, 51502200, 51502198, 21633004]
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Hydrogen production from coal gasification provides a cleaning approach to convert coal resource into chemical energy, but the key procedures of coal gasification and thermal catalytic water-gas shift (WGS) reaction in this energy technology still suffer from high energy cost. We herein propose adopting a solar-driven WGS process instead of traditional thermal catalysis, with the aim of greatly decreasing the energy consumption. Under light irradiation, the CuOx/Al2O3 delivers excellent catalytic activity (122 mu molg(cat)(-1)s(-1) of H-2 evolution and >95% of CO conversion) which is even more efficient than noble-metal-based catalysts (Au/Al2O3 and Pt/Al2O3). Importantly, this solar-driven WGS process costs no electric/thermal power but attains 1.1% of light-to-energy storage. The attractive performance of the solar-driven WGS reaction over CuOx/Al2O3 can be attributed to the combined photothermocatalysis and photocatalysis.
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