Reconstructing Cu nanoparticle supported on vertical graphene surfaces via electrochemical treatment to tune the selectivity of CO2 reduction toward valuable products

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dc.contributor.authorMa, ZPen_AU
dc.contributor.authorTsounis, Cen_AU
dc.contributor.authorToe, CYen_AU
dc.contributor.authorKumar, PVen_AU
dc.contributor.authorSubhash, Ben_AU
dc.contributor.authorXi, SBen_AU
dc.contributor.authorYang, HYen_AU
dc.contributor.authorZhou, SJen_AU
dc.contributor.authorLin, ZHen_AU
dc.contributor.authorWu, KHen_AU
dc.contributor.authorWong, RJen_AU
dc.contributor.authorThomsen, Len_AU
dc.contributor.authorBedford, NMen_AU
dc.contributor.authorNg, YHen_AU
dc.contributor.authorHan, ZJen_AU
dc.contributor.authorAmal, Ren_AU
dc.date.accessioned2023-06-14T05:25:53Zen_AU
dc.date.available2023-06-14T05:25:53Zen_AU
dc.date.issued2022-04-07en_AU
dc.date.statistics2022-05-06en_AU
dc.description.abstractReconstructing a catalyst with tunable properties is essential for achieving selective electrochemical CO2 reduction reaction (CO2RR). Here, a reduction–oxidation–reduction (ROR) electrochemical treatment is devised to advisedly reconstruct copper nanoparticles on vertical graphene. Undercoordinated sites and oxygen vacancies constructed on the Cu active sites during the ROR treatment enhance the CO2RR activity. Moreover, by varying the oxidation potential while maintaining the reduction potential during the ROR treatment, CO2RR selectivity can be tuned between *COOH- and *OCHO-derived products. Specifically, rich grain boundaries are formed on the ROR catalyst with a high oxidation potential (+1.2 VRHE), favoring the *COOH/*OCCO adsorption and leading C–C coupling to *COOH-derived products, while the catalyst undergoing ROR at a low oxidation potential (+0.8 VRHE) lacks grain boundaries, resulting in highly selective formate (*OCHO-derived) production. Our findings are evidenced by combined in situ and ex situ characterizations and theoretical calculations. © 2022 American Chemical Societyen_AU
dc.identifier.citationMa, Z., Tsounis, C., Toe, C. Y., Kumar, P. V., Subhash, B., Xi, S., Yang, H. Y., Zhou, S., Lin, Z., Wu, K.-H., Wong, R., J., Thomsen, L., Bedford, N. M., Lu, X., Ng, Y, H., Han, Z., & Amal, R. (2022). Reconstructing Cu nanoparticle supported on vertical graphene surfaces via electrochemical treatment to tune the selectivity of CO2 reduction toward valuable products. ACS Catalysis, 12(9), 4792-4805. doi:10.1021/acscatal.1c05431en_AU
dc.identifier.issn2155-5435en_AU
dc.identifier.issue9en_AU
dc.identifier.journaltitleACS Catalysisen_AU
dc.identifier.pagination4792-4805en_AU
dc.identifier.urihttps://doi.org/10.1021/acscatal.1c05431en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15055en_AU
dc.identifier.volume12en_AU
dc.language.isoenen_AU
dc.publisherACS Publicationsen_AU
dc.subjectNanoparticlesen_AU
dc.subjectElectrodesen_AU
dc.subjectElectrochemistryen_AU
dc.subjectCarbon dioxideen_AU
dc.subjectOxidationen_AU
dc.subjectRedox reactionsen_AU
dc.subjectCatalystsen_AU
dc.subjectGrapheneen_AU
dc.titleReconstructing Cu nanoparticle supported on vertical graphene surfaces via electrochemical treatment to tune the selectivity of CO2 reduction toward valuable productsen_AU
dc.typeJournal Articleen_AU
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