Yong Zhang , FeiFei Chen , Xiaoya Hao , Yingda Liu , Wentao Wu , Xinghua Zhang , Zehao Zang , Hong Dong , Weihua Wang , Feng Lu , Zunming Lu , Hui Liu , Hui Liu , Feng Luo , Yahui Cheng
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引用次数: 0
Abstract
Electroreduction of CO2 to C2H4 is a promising strategy for carbon neutralization. However, the kinetic challenge of *CO dimerization, particularly at high current-density, limits its suitability for industrial production. Here, we report that Cu/Ag bimetallic catalyst (Cu52Ag48) with strong interfacial effect can promote high C2H4 selectivity at high current-density. We find that the elaborately designed Cu/Ag interface not only inhibits HER and ethanol formation by weakening H adsorption, but also promotes the formation of *CHO intermediates, achieving an unusual asymmetric *CO-*CHO coupling instead of the common symmertic *CO-*CO coupling. Subsequently, the Faradaic efficiency of C2H4 over Cu52Ag48 is significantly increased to 69.2% at a high current-density of up to 450 mA cm−2. The interfacial effect-induced *CO-*CHO coupling can be extended to other metals with weak H and O adsorption such as Cu/Zn and Cu/Au, thereby boosting the production of C2H4 in CO2RR.
期刊介绍:
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.