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Steering the Selectivity of Carbon Dioxide Electroreduction from Single-Carbon to Multicarbon Products on Metal−Organic Frameworks via Facet Engineering

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Abstract

Although metal−organic frameworks (MOFs) have attracted more attention for the electrocatalytic CO2 reduction reaction (CO2RR), obtaining multicarbon products with a high Faradaic efficiency (FE) remains challenging, especially under neutral conditions. Here, we report the controlled synthesis of stable Cu(I) 5-mercapto-1-methyltetrazole framework (Cu-MMT) nanostructures with different facets by rationally modulating the reaction solvents. Significantly, Cu-MMT nanostructures with (001) facets are acquired using isopropanol as a solvent, which favor multicarbon production with an FE of 73.75% and a multicarbon:single-carbon ratio of 3.93 for CO2RR in a neutral electrolyte. In sharp contrast, Cu-MMT nanostructures with (100) facets are obtained utilizing water, promoting single-carbon generation with an FE of 63.98% and a multicarbon: single-carbon ratio of only 0.18. Furthermore, this method can be extended to other Cu-MMT nanostructures with different facets in tuning the CO2 reduction selectivity. This work opens up new opportunities for the highly selective and efficient CO2 electroreduction to multicarbon products on MOFs via facet engineering. © 2024 American Chemical Society.
Original languageEnglish
Pages (from-to)1553-1562
JournalNano Letters
Volume24
Issue number5
Online published24 Jan 2024
DOIs
Publication statusPublished - 7 Feb 2024

Funding

This work was supported by Grants 22175148 and 22005258 from the National Natural Science Foundation of China, Grant 21309322 from the Research Grants Council of Hong Kong, Grant JCYJ20220530140815035 from the Shenzhen Science and Technology Program, ITC via Hong Kong Branch of National Precious Metals Material Engineering Research Centre (NPMM), and Grants 9610480, 9610663, 9680301, and 7006007 from the City University of Hong Kong.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 13 - Climate Action
    SDG 13 Climate Action

Research Keywords

  • carbon dioxide reduction reaction
  • electrocatalysis
  • facet engineering
  • metal−organic frameworks
  • multicarbon products

Publisher's Copyright Statement

  • COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.nanolett.3c04092.

RGC Funding Information

  • RGC-funded

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