In:
Angewandte Chemie, Wiley, Vol. 130, No. 47 ( 2018-11-19), p. 15641-15645
Abstract:
Artificial photosynthesis can be used to store solar energy and reduce CO 2 into fuels to potentially alleviate global warming and the energy crisis. Compared to the generation of gaseous products, it remains a great challenge to tune the product distribution of artificial photosynthesis to liquid fuels, such as CH 3 OH, which are suitable for storage and transport. Herein, we describe the introduction of metallic Cu nanoparticles (NPs) on Cu 2 O films to change the product distribution from gaseous products on bare Cu 2 O to predominantly CH 3 OH by CO 2 reduction in aqueous solutions. The specifically designed Cu/Cu 2 O interfaces balance the binding strengths of H* and CO* intermediates, which play critical roles in CH 3 OH production. With a TiO 2 model photoanode to construct a photoelectrochemical cell, a Cu/Cu 2 O dark cathode exhibited a Faradaic efficiency of up to 53.6 % for CH 3 OH production. This work demonstrates the feasibility and mechanism of interface engineering to enhance the CH 3 OH production from CO 2 reduction in aqueous electrolytes.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v130.47
DOI:
10.1002/ange.201805256
Language:
English
Publisher:
Wiley
Publication Date:
2018
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