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journal article·2025-03Open access

High‐Performance Bi‐Based Catalysts for CO₂ Reduction: In Situ Formation of Bi/Bi₂O₂CO₃ and Enhanced Formate Production

Ben Li, Jiadong Chen, Lihua Wang, De Xia, Shanjun Mao, Lingling Xi, Huajie Liu, Sibin Ying, Yong Wang

Advanced Science· Volume 12· Issue 10
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Source abstract

Abstract

Abstract The unavoidable self‐reduction of Bismuth (Bi)‐based catalysts to zero‐valence Bi often results in detrimental adsorption of OCHO*, leading to unsatisfactory selectivity of HCOOH in the electroreduction of carbon dioxide (CO2). A novel Bi‐tannin (Bi‐TA) complex is developed, which undergoes in situ reconstruction into a Bi/Bi₂O₂CO₃ phase during CO2 reduction. This reconstructed catalyst exhibits high activity and selectivity, achieving a Faradaic Efficiency (FE) for formate production exceeding 90%, peaking at 96%. Operando spectroscopic and theoretical analyses reveal that the Biδ+ active site in Bi/Bi₂O₂CO₃ significantly enhances the formation of the OCHO* intermediate, crucial for formate production. The study offers a promising approach to overcoming the limitations of Bi‐based catalysts in CO2 reduction to formate.
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Research context

Catalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Carbon dioxide utilization in catalysis

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

Affiliations

Advanced Materials and Catalysis Group ZJU‐Zhejiang Xinhua Low‐Carbon Research Center State Key Laboratory of Clean Energy Utilization Institute of Catalysis Department of Chemistry Zhejiang University Hangzhou 310058 P. R. China

College of Chemistry and Molecular Engineering Zhengzhou University Zhengzhou 450001 P.R. China

Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Recycling College of Material and Chemical Engineering Hunan Institute of Engineering Xiangtan 411104 P. R. China

ZJU‐Zhejiang Xinhua Low‐Carbon Research Center Zhejiang Xinhua Chemical Co., Ltd P. R. China

Funding

National Natural Science Foundation of China

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