Construction of Interlayered Single-Atom Active Sites on Bipyridine-Based 2D Conjugated Covalent-Organic Frameworks for Boosting the C₂ Products of Electrochemical CO₂ Reduction

Lu Dai; Jianning Lv; Shuo Xu; Jiawen Zong; Lisha Liang; Bo Wang; Pengfei Li

doi:10.1021/acsami.4c16371

journal article·2024-12-11

Construction of Interlayered Single-Atom Active Sites on Bipyridine-Based 2D Conjugated Covalent-Organic Frameworks for Boosting the C₂ Products of Electrochemical CO₂ Reduction

Lu Dai, Jianning Lv, Shuo Xu, Jiawen Zong, Lisha Liang, Bo Wang, Pengfei Li

ACS Applied Materials & Interfaces· Volume 16· Issue 49

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Source abstract

Abstract

The electrochemical carbon dioxide reduction (eCO 2 RR) shows great potential in the realization of carbon neutrality, which requires a dedicated catalyst design. To develop electrocatalysts that favor C 2 products, herein, the synthetic protocol for engineering interlayered single-atom metal active sites on the bipyridine-linked 2D conjugated covalent-organic framework (2D c -COF) has been developed by utilizing the interlayer π–π stacking. The resultant M@BTT-BPy-COF (where M = Cu, Ni, and Fe) provides fully exposed single-atom active sites with a suitable interdistance for catalyzing the key C–C coupling in the eCO 2 RR process. The Faradaic efficiency of ethanol (FE ethanol ) exceeds 40% with M@BTT-BPy-COF at −0.8 V vs RHE, outperforming most reported COF-based electrocatalysts. Density functional calculations suggest that the proximal active sites in the pore channel of COFs are the key active sites for promoting the C–C coupling to generate ethanol product. This investigation presents a novel way to engineer single-atom catalytic centers on 2D c -COFs, displaying the great potential of 2D c -COFs in electrocatalysis.

Source: openalex_inverted_index · Quality: baseline

Research context

Catalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Covalent Organic Framework Applications · Advanced Photocatalysis Techniques

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

Affiliations

Frontiers Science Center for High Energy Material, Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, No. 5, Zhongguancun South Street, Haidian District, Beijing 100081, P. R. China

Advanced Technology Research Institute (Ji’nan), Beijing Institute of Technology, No. 8366, Haitang Road, Changqing District, Ji’nan 250300, P. R. China

Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology (Zhuhai), No. 6, Jinfeng Road, Tangjiawan, Zhuhai 519088, P. R. China

Funding

National Key Research and Development Program of China · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Beijing Institute of Technology Research Fund Program for Young Scholars

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