Metal–Support Interactions in Single-Atom Catalysts for Electrochemical CO 2 Reduction.
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| Title: | Metal–Support Interactions in Single-Atom Catalysts for Electrochemical CO 2 Reduction. |
|---|---|
| Authors: | Mansilla-Roux, Alexandra1 (AUTHOR), Lara-Angulo, Mayra Anabel1 (AUTHOR), Serrano-Ruiz, Juan Carlos1 (AUTHOR) jcserrano@uloyola.es |
| Source: | Nanomaterials (2079-4991). Jan2026, Vol. 16 Issue 2, p103. 24p. |
| Subjects: | Catalyst supports, Catalysts, Chemical stability, Electrochemical experiments, Electrode efficiency, Intermediates (Chemistry) |
| Abstract: | Electrochemical CO2 reduction (CO2RR) is a promising route to transform a major greenhouse gas into value-added fuels and chemicals. However, its deployment is still hindered by the sluggish activation of CO2, poor selectivity toward multielectron products, and competition with the hydrogen evolution reaction (HER). Single-atom catalysts (SACs) have emerged as powerful materials to address these challenges because they combine maximal metal utilization with well-defined coordination environments whose electronic structure can be precisely tuned through metal–support interactions. This minireview summarizes current understanding of how structural, electronic, and chemical features of SAC supports (e.g., porosity, heteroatom doping, vacancies, and surface functionalization) govern the adsorption and conversion of key CO2RR intermediates and thus control product distributions from CO to CH4, CH3OH and C2+ species. Particular emphasis is placed on selectivity descriptors (e.g., coordination number, d-band position, binding energies of *COOH and *OCHO) and on rational design strategies that exploit curvature, microenvironment engineering, and electronic metal–support interactions to direct the reaction along desired pathways. Representative SAC systems based primarily on N-doped carbons, complemented by selected examples on oxides and MXenes are discussed in terms of Faradaic efficiency (FE), current density and operational stability under practically relevant conditions. Finally, the review highlights remaining bottlenecks and outlines future directions, including operando spectroscopy and data-driven analysis of dynamic single-site ensembles, machine-learning-assisted DFT screening, scalable mechanochemical synthesis, and integration of SACs into industrially viable electrolyzers for carbon-neutral chemical production. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 191216570 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Metal–Support Interactions in Single-Atom Catalysts for Electrochemical CO 2 Reduction. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mansilla-Roux%2C+Alexandra%22">Mansilla-Roux, Alexandra</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lara-Angulo%2C+Mayra+Anabel%22">Lara-Angulo, Mayra Anabel</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Serrano-Ruiz%2C+Juan+Carlos%22">Serrano-Ruiz, Juan Carlos</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jcserrano@uloyola.es</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jan2026, Vol. 16 Issue 2, p103. 24p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Catalyst+supports%22">Catalyst supports</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+stability%22">Chemical stability</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+experiments%22">Electrochemical experiments</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+efficiency%22">Electrode efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Intermediates+%28Chemistry%29%22">Intermediates (Chemistry)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Electrochemical CO2 reduction (CO2RR) is a promising route to transform a major greenhouse gas into value-added fuels and chemicals. However, its deployment is still hindered by the sluggish activation of CO2, poor selectivity toward multielectron products, and competition with the hydrogen evolution reaction (HER). Single-atom catalysts (SACs) have emerged as powerful materials to address these challenges because they combine maximal metal utilization with well-defined coordination environments whose electronic structure can be precisely tuned through metal–support interactions. This minireview summarizes current understanding of how structural, electronic, and chemical features of SAC supports (e.g., porosity, heteroatom doping, vacancies, and surface functionalization) govern the adsorption and conversion of key CO2RR intermediates and thus control product distributions from CO to CH4, CH3OH and C2+ species. Particular emphasis is placed on selectivity descriptors (e.g., coordination number, d-band position, binding energies of *COOH and *OCHO) and on rational design strategies that exploit curvature, microenvironment engineering, and electronic metal–support interactions to direct the reaction along desired pathways. Representative SAC systems based primarily on N-doped carbons, complemented by selected examples on oxides and MXenes are discussed in terms of Faradaic efficiency (FE), current density and operational stability under practically relevant conditions. Finally, the review highlights remaining bottlenecks and outlines future directions, including operando spectroscopy and data-driven analysis of dynamic single-site ensembles, machine-learning-assisted DFT screening, scalable mechanochemical synthesis, and integration of SACs into industrially viable electrolyzers for carbon-neutral chemical production. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano16020103 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 103 Subjects: – SubjectFull: Catalyst supports Type: general – SubjectFull: Catalysts Type: general – SubjectFull: Chemical stability Type: general – SubjectFull: Electrochemical experiments Type: general – SubjectFull: Electrode efficiency Type: general – SubjectFull: Intermediates (Chemistry) Type: general Titles: – TitleFull: Metal–Support Interactions in Single-Atom Catalysts for Electrochemical CO 2 Reduction. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mansilla-Roux, Alexandra – PersonEntity: Name: NameFull: Lara-Angulo, Mayra Anabel – PersonEntity: Name: NameFull: Serrano-Ruiz, Juan Carlos IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 01 Text: Jan2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 16 – Type: issue Value: 2 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
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