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Potential-induced synthesis of cavity Cu2O/Cu nanocubes for enhanced electroreduced CO2 to C2+ products.

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Title: Potential-induced synthesis of cavity Cu2O/Cu nanocubes for enhanced electroreduced CO2 to C2+ products.
Authors: Hu, Yaping1 (AUTHOR) huyaping666@163.com, Zhai, Shasha1 (AUTHOR) zhaishahxx@163.com, Guo, Yaping1 (AUTHOR) gypapply@163.com, Dang, Shan1 (AUTHOR) dangshan1983@163.com, Li, Jing1 (AUTHOR) 13137325572@163.com, Yang, Miao1 (AUTHOR) gelingmiao@126.com
Source: Research on Chemical Intermediates. Nov2025, Vol. 51 Issue 11, p6577-6591. 15p.
Subjects: Carbon dioxide reduction, Copper catalysts, Electrosynthesis, Nanostructures, Chemical products manufacturing, Electrode efficiency, Catalysis, Coupling reactions (Chemistry)
Abstract: Electrochemical reduction reaction of CO2 (CO2RR) to C1 and C2 products can be achieved on Cu-based electrocatalysts. C2 products exhibit higher energy density and economic value compared to C1 products, making them more desirable as reduction products. However, the production of C2 products on pure Cu catalysts involves multi-step proton-coupled electron transfer and C–C coupling steps, which are kinetically slow and result in poor catalytic activity and selectivity for the products. The cavity nanocubes Cu2O(0.13-AA), Cu2O(0.10-AA) and Cu2O(0.15-AA) catalysts were synthesized via wet chemical reduction by adjusting the concentration of the reducing agent. The electrochemical pre-reduction method was used to obtain Cu2O/Cu(0.13-AA), Cu2O/Cu(0.10-AA) and Cu2O/Cu(0.15-AA) catalysts for CO2RR. Cu2O/Cu(0.13 M-AA) catalyst achieves the high Faradaic efficiency (FE) of 39.98% for C2H4 and 54.76% for C2 products (C2H4, C2H6, and C2H5OH), with significant inhibition of the hydrogen evolution reaction. In situ Raman experiments demonstrate that the cavity structure of the nanocubes enhances the local concentration of *CO intermediates, thereby promoting the C–C coupling process and improving the selectivity of CO2 reduction to C2 products. [ABSTRACT FROM AUTHOR]
Copyright of Research on Chemical Intermediates is the property of Springer Nature 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.)
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  Data: Potential-induced synthesis of cavity Cu<subscript>2</subscript>O/Cu nanocubes for enhanced electroreduced CO<subscript>2</subscript> to C<subscript>2+</subscript> products.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Yaping%22">Hu, Yaping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> huyaping666@163.com</i><br /><searchLink fieldCode="AR" term="%22Zhai%2C+Shasha%22">Zhai, Shasha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhaishahxx@163.com</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Yaping%22">Guo, Yaping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gypapply@163.com</i><br /><searchLink fieldCode="AR" term="%22Dang%2C+Shan%22">Dang, Shan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dangshan1983@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Jing%22">Li, Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 13137325572@163.com</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Miao%22">Yang, Miao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gelingmiao@126.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Research+on+Chemical+Intermediates%22">Research on Chemical Intermediates</searchLink>. Nov2025, Vol. 51 Issue 11, p6577-6591. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Carbon+dioxide+reduction%22">Carbon dioxide reduction</searchLink><br /><searchLink fieldCode="DE" term="%22Copper+catalysts%22">Copper catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Electrosynthesis%22">Electrosynthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructures%22">Nanostructures</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+products+manufacturing%22">Chemical products manufacturing</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+efficiency%22">Electrode efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysis%22">Catalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Coupling+reactions+%28Chemistry%29%22">Coupling reactions (Chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Electrochemical reduction reaction of CO2 (CO2RR) to C1 and C2 products can be achieved on Cu-based electrocatalysts. C2 products exhibit higher energy density and economic value compared to C1 products, making them more desirable as reduction products. However, the production of C2 products on pure Cu catalysts involves multi-step proton-coupled electron transfer and C–C coupling steps, which are kinetically slow and result in poor catalytic activity and selectivity for the products. The cavity nanocubes Cu2O(0.13-AA), Cu2O(0.10-AA) and Cu2O(0.15-AA) catalysts were synthesized via wet chemical reduction by adjusting the concentration of the reducing agent. The electrochemical pre-reduction method was used to obtain Cu2O/Cu(0.13-AA), Cu2O/Cu(0.10-AA) and Cu2O/Cu(0.15-AA) catalysts for CO2RR. Cu2O/Cu(0.13 M-AA) catalyst achieves the high Faradaic efficiency (FE) of 39.98% for C2H4 and 54.76% for C2 products (C2H4, C2H6, and C2H5OH), with significant inhibition of the hydrogen evolution reaction. In situ Raman experiments demonstrate that the cavity structure of the nanocubes enhances the local concentration of *CO intermediates, thereby promoting the C–C coupling process and improving the selectivity of CO2 reduction to C2 products. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Research on Chemical Intermediates is the property of Springer Nature 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:
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      – Type: doi
        Value: 10.1007/s11164-025-05766-3
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 15
        StartPage: 6577
    Subjects:
      – SubjectFull: Carbon dioxide reduction
        Type: general
      – SubjectFull: Copper catalysts
        Type: general
      – SubjectFull: Electrosynthesis
        Type: general
      – SubjectFull: Nanostructures
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      – SubjectFull: Chemical products manufacturing
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      – SubjectFull: Electrode efficiency
        Type: general
      – SubjectFull: Catalysis
        Type: general
      – SubjectFull: Coupling reactions (Chemistry)
        Type: general
    Titles:
      – TitleFull: Potential-induced synthesis of cavity Cu2O/Cu nanocubes for enhanced electroreduced CO2 to C2+ products.
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            NameFull: Hu, Yaping
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            NameFull: Dang, Shan
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            NameFull: Li, Jing
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            – D: 01
              M: 11
              Text: Nov2025
              Type: published
              Y: 2025
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              Value: 51
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