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Solar‐Driven Water–Gas Shift Reaction over CuO x /Al 2 O 3 with 1.1 % of Light‐to‐Energy Storage
Author(s) -
Zhao Likuan,
Qi Yuhang,
Song Lizhu,
Ning Shangbo,
Ouyang Shuxin,
Xu Hua,
Ye Jinhua
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201902324
Subject(s) - water gas shift reaction , catalysis , hydrogen production , solar energy , chemical energy , photocatalysis , materials science , coal , water splitting , chemical engineering , nanotechnology , chemistry , electrical engineering , engineering , organic chemistry
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 CuO x /Al 2 O 3 delivers excellent catalytic activity (122 μmol g cat −1 s −1 of H 2 evolution and >95 % of CO conversion) which is even more efficient than noble‐metal‐based catalysts (Au/Al 2 O 3 and Pt/Al 2 O 3 ). 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 CuO x /Al 2 O 3 can be attributed to the combined photothermocatalysis and photocatalysis.