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Gold Single Atom Doped Defective Nanoporous Copper Octahedrons for Electrocatalytic Reduction of Carbon Dioxide to Ethylene

2025Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorZhao, Yang
dc.contributor.authorWang, Yanan
dc.contributor.authorYu, Zhipeng
dc.contributor.authorSong, Chao
dc.contributor.authorWang, Jingwei
dc.contributor.authorHuang, Haoliang
dc.contributor.authorMeng, Lijian
dc.contributor.authorLiu, Miao
dc.contributor.authorLiu, Lifeng
dc.date.accessioned2025-02-07T16:13:25Z
dc.date.available2025-02-07T16:13:25Z
dc.date.issued2025
dc.description.abstractElectrocatalytic CO2 reduction into high-value multicarbon products offers a sustainable approach to closing the anthropogenic carbon cycle and contributing to carbon neutrality, particularly when renewable electricity is used to power the reaction. However, the lack of efficient and durable electrocatalysts with high selectivity for multicarbons severely hinders the practical application of this promising technology. Herein, a nanoporous defective Au1Cu single-atom alloy (DeAu1Cu SAA) catalyst is developed through facile low-temperature thermal reduction in hydrogen and a subsequent dealloying process, which shows high selectivity toward ethylene (C2H4), with a Faradaic efficiency of 52% at the current density of 252 mA cm−2 under a potential of −1.1 V versus reversible hydrogen electrode (RHE). In situ spectroscopy measurements and density functional theory (DFT) calculations reveal that the high C2H4 product selectivity results from the synergistic effect between Au single atoms and defective Cu sites on the surface of catalysts, where Au single atoms promote *CO generation and Cu defects stabilize the key intermediate *OCCO, which altogether enhances C−C coupling kinetics. This work provides important insights into the catalyst design for electrochemical CO2 reduction to multicarbon products.eng
dc.description.sponsorshipL.L. acknowledges the financial support from the Ministry of Science and Technology of China through the Talent Recruitment Programme (grant no. 22J4021Z311) and the start-up grant of the Songshan Lake Materials Laboratory (grant no. Y2D1051Z311). Y.W. acknowledges the financial support from the National Natural Science Foundation of China (grant no. 12304264). The authors thank Dr. Alexey Maximenko at the ASTRA beamline, SOLARIS synchrotron radiation facility in Poland, for his assistance in XAS experiments.
dc.identifier.citationYang Zhao, Yanan Wang, Zhipeng Yu, Chao Song, Jingwei Wang, Haoliang Huang, Lijian Meng, Miao Liu, and Lifeng Liu ACS Nano 2025 19 (4), 4505-4514 DOI: 10.1021/acsnano.4c13961
dc.identifier.doihttps://doi.org/10.1021/acsnano.4c13961
dc.identifier.urihttp://hdl.handle.net/10400.22/29427
dc.language.isoeng
dc.peerreviewedyes
dc.publisherACS
dc.rights.uriN/A
dc.subjectElectrochemical CO2 reduction
dc.subjectNanoporous structure
dc.subjectElectroctalysis
dc.subjectSingle-atom Au1Cu alloy
dc.subjectDealloying
dc.titleGold Single Atom Doped Defective Nanoporous Copper Octahedrons for Electrocatalytic Reduction of Carbon Dioxide to Ethyleneeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage4514
oaire.citation.issue4
oaire.citation.startPage4505
oaire.citation.titleACS Nano
oaire.citation.volume19
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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