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Photo/electrochemical Carbon Dioxide Conversion into C 3+ Hydrocarbons: Reactivity and Selectivity
Author(s) -
Abdelnaby Mahmoud M.,
Liu Kaili,
Hassanein Khaled,
Yin Zongyou
Publication year - 2021
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202100106
Subject(s) - catalysis , selectivity , bimetallic strip , electrochemistry , chemistry , electrochemical reduction of carbon dioxide , carbon dioxide , materials science , chemical engineering , carbon monoxide , organic chemistry , electrode , engineering
Producing high‐value fuels and chemicals via photo/electrochemical CO 2 reduction reaction (CO 2 RR) remains an attractive goal to mitigate the negative impact of CO 2 emissions and provide a sustainable energy source. The large industrial scale is currently discriminated by the relatively low product selectivity (a high cost is expected for separating the products) and the activity. The selective CO 2 reduction into higher‐order multi‐carbon products is desirable from the economic point of view. Yet, most of the reported electrocatalysts have produced C 1 and C 2 products; however, the production of C 3 products is less common. Cu‐based catalysts are the most documented systems to produce C 3 products because of the exclusive C−C coupling ability of the Cu system. However, creating multi‐carbon products on non‐Cu catalysts is unfairly discussed. Growing the research activity on non‐Cu catalysts will enrich the categories of alternative catalysts and propose more understanding of the CO 2 RR mechanism. This should guide the development of more creative catalysts with the optimum configuration for high activity and selectivity for high‐value C 3 products. The catalysts′ development progress, including metallic Cu, biphase, or bimetallic Cu, non‐Cu‐based catalysts, has been discussed in light of the catalyst activity and selectivity. Some insights on the reaction mechanism for the desired C 3 product (most commonly, n‐propanol) and other C 3+ products are also discussed.