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ZnSn nanocatalyst: Ultra-high formate selectivity from CO₂ electrochemical reduction and the structure evolution effect

Li, Wenjuan and Zhang, Zhengrong and Liu, Wenhui and Gan, Quan and Liu, Minmin and Huo, Shengjuan and Chen, Wei (2022) ZnSn nanocatalyst: Ultra-high formate selectivity from CO₂ electrochemical reduction and the structure evolution effect. Journal of Colloid and Interface Science, 608 (3). pp. 2791-2800. ISSN 0021-9797. doi:10.1016/j.jcis.2021.11.002. https://resolver.caltech.edu/CaltechAUTHORS:20211202-191326992

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Abstract

The introduction of tin (Sn) into Zn-based catalyst can change its intrinsic properties of the electrochemically reduction of CO₂ to CO, obtaining a high formate yield. The electron transfer from Zn to Sn lowers down the d-band center of Sn, leading to a more reliable surface adsorption of the *OCHO intermediate and high formate selectivity. The obtained ZnSn catalyst enables formate formation with a drastically boosted Faradaic efficiency (FE) up to 94%, which is 2.04 and 1.34 times of pure Zn and Sn foils, respectively, indicating a synergistic effect between Zn and Sn. During the electrochemical CO₂ reduction reaction (eCO₂RR) process, the morphology of the ZnSn catalyst evolved from nanoparticles to nanosheets, nanoneedles and collapsed structures, corresponding to the activation, stabilization and decay stages, respectively. This study provides a facile and controllable approach for the construction of novel bimetallic catalyst favoring formate selectivity based on the synergistic effect.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.jcis.2021.11.002DOIArticle
ORCID:
AuthorORCID
Gan, Quan0000-0001-5908-4163
Alternate Title:ZnSn nanocatalyst: Ultra-high formate selectivity from CO2 electrochemical reduction and the structure evolution effect
Additional Information:© 2021 Elsevier. Received 24 August 2021, Revised 30 October 2021, Accepted 1 November 2021, Available online 3 November 2021. We gratefully acknowledge the financial support by National Natural Science Foundation of China (22002087), Shanghai Sailing Program (18YF1408600) and Baoshan Iron & Steel Co., Ltd. (Baosteel), located in Shanghai, China. CRediT authorship contribution statement: Wenjuan Li: Writing – original draft. Zhengrong Zhang: Software. Wenhui Liu: Investigation. Quan Gan: Writing – review & editing, Resources. Minmin Liu: Data curation, Writing – review & editing. Shengjuan Huo: Methodology, Project administration, Resources , Writing – review & editing. Wei Chen: Writing – review & editing. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China22002087
Shanghai Sailing Program18YF1408600
Baoshan Iron & Steel Co., Ltd.UNSPECIFIED
Subject Keywords:Electrochemical CO2 reduction reactions; ZnSn bimetallic catalyst; Formate selectivity; Morphology evolution; Composition evolution
Issue or Number:3
DOI:10.1016/j.jcis.2021.11.002
Record Number:CaltechAUTHORS:20211202-191326992
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20211202-191326992
Official Citation:Wenjuan Li, Zhengrong Zhang, Wenhui Liu, Quan Gan, Minmin Liu, Shengjuan Huo, Wei Chen, ZnSn nanocatalyst: Ultra-high formate selectivity from CO2 electrochemical reduction and the structure evolution effect, Journal of Colloid and Interface Science, Volume 608, Part 3, 2022, Pages 2791-2800, ISSN 0021-9797, https://doi.org/10.1016/j.jcis.2021.11.002.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112171
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:02 Dec 2021 23:00
Last Modified:14 Dec 2021 23:33

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