journal article·2024-10-23

Ag-Mediated Growth of Au/Ag–Cu Ternary Heterostructures for Selective Electrochemical CO2 Reduction

Wenhao Xu, Taishi Xiao, Jie Chen, Junxiang Shu, Jili Li, Yao Ma, Xiang Li, Zihan Zhong, Zitao Zhang, Yefei Li, Qing Zhang, Zhengzong Sun, Yun Tang

ACS Applied Materials & Interfaces· Volume 16· Issue 42
Publisher page

Abstract

Copper (Cu)-based nanocatalysts play crucial roles in the electrochemical CO 2 reduction reaction (ECO 2 RR) for sustainable energy resources. Particularly, Cu-based nanostructures incorporating Au and Ag are promising, offering enhanced activity, selectivity, and stability. However, precise control over the structure and composition of heterostructures remains challenging, hindering the development of highly efficient catalysts. Herein, we present a silver (Ag) transition-layer-mediated approach to synthesize ternary heterostructures with two specific morphologies, namely, Au/Ag–Cu-side and Au/Ag–Cu-tip, which exhibit different Ag–Cu interface epitaxial patterns. The two heterostructures achieve high C2 product selectivity in ECO 2 RR. Especially, the Au/Ag–Cu-side structure achieves 50.3% C2 selectivity with 35.5% ethanol, while the tip structure shows higher ethylene selectivity. Our study reveals the impact of the Ag layer in directing deposition sites on heterostructure growth and further facilitating the design of multicomponent Cu-based catalysts with enhanced structural integrity and ECO 2 RR performance.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Electrocatalysts for Energy Conversion · Advanced Thermoelectric Materials and Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Collaborative Innovation Center of Chemistry for Energy Materials, Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Collaborative Innovation Center of Chemistry for Energy Materials, School of Microelectronics and State Key Laboratory of ASIC and System, Fudan University, Shanghai 200433, China

Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200438, China

Shanghai Key Laboratory of High-resolution Electron Microscopy, School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

Funding

Fudan University · National Key Research and Development Program of China · Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China · Center for High-Resolution Electron Microscopy, ShanghaiTech University · Fudan University Yiwu Research Institute

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