Advances in MXene surface functionalization modification strategies for CO2 reduction

MXenes, 2D transition metal carbides and nitrides, show great potential in electrocatalytic CO2 reduction reaction (ECO2RR) applications owing to their tunable structure, abundant surface functional groups, large specific surface area and remarkable conductivity. However, the ECO2RR has a complex pa...

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Bibliographic Details
Published in:Nanoscale 2024-06, Vol.16 (24), p.11480-11495
Main Authors: Li, Hailong, Liu, Linhao, Yuan, Tianbin, Zhang, Jianwen, Wang, Tiantian, Hou, Juan, Chen, Jiangzhao
Format: Article
Language:English
Subjects:
Carbon dioxide
Catalytic activity
Chemical reduction
Electrocatalysts
Functional groups
Metal carbides
MXenes
Reaction intermediates
Stability
Transition metals
Water splitting
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Summary:MXenes, 2D transition metal carbides and nitrides, show great potential in electrocatalytic CO2 reduction reaction (ECO2RR) applications owing to their tunable structure, abundant surface functional groups, large specific surface area and remarkable conductivity. However, the ECO2RR has a complex pathway involving various reaction intermediates. The reaction process yields various products alongside a competitive electrolytic water-splitting reaction. These factors limit the application of MXenes in ECO2RRs. Therefore, this review begins by examining the functionalized modification of MXenes to enhance their catalytic activity and stability via the regulation of interactions between carriers and the catalytic centre. The review firstly covers the synthesis methods and characterisation techniques for functionalized MXenes reported in recent years. Secondly, it presents the methods applied for the functionalized modification of carriers through surface loading of single atoms, clusters, and nanoparticles and construction of composites. These methods regulate the stability, active sites, and metal-carrier electronic interactions. Finally, the article discusses the challenges, opportunities, pressing issues, and future prospects related to MXene-based electrocatalysts.
ISSN:2040-3364
2040-3372
2040-3372
DOI:10.1039/d4nr01517g