Laser-ablation assisted strain engineering of gold nanoparticles for selective electrochemical CO2 reduction

buir.contributor.orcidKaradaş, Ferdi|0000-0001-7171-9889en_US
dc.citation.epage7710en_US
dc.citation.issueNumber14en_US
dc.citation.spage7702en_US
dc.citation.volumeNumber20en_US
dc.contributor.authorZhang, C.
dc.contributor.authorZhang, W.
dc.contributor.authorKaradaş, Ferdi
dc.contributor.authorLow, J.
dc.contributor.authorLong, R.
dc.contributor.authorLiang, C.
dc.contributor.authorWang, J.
dc.contributor.authorLi, Z.
dc.contributor.authorXiong, Y.
dc.contributor.bilkentauthorKaradaş, Ferdi
dc.date.accessioned2023-02-16T10:50:39Z
dc.date.available2023-02-16T10:50:39Z
dc.date.issued2022-04-19
dc.departmentDepartment of Chemistryen_US
dc.description.abstractStrain engineering can endow versatile functions, such as refining d-band center and inducing lattice mismatch, on catalysts for a specific reaction. To this end, effective strain engineering for introducing strain on the catalyst is highly sought in various catalytic applications. Herein, a facile laser ablation in liquid (LAL) strategy is adopted to synthesize gold nanoparticles (Au NPs) with rich compressive strain (Au-LAL) for electrochemical CO2 reduction. It is demonstrated that the rich compressive strain can greatly promote the electrochemical CO2 reduction performance of Au, achieving a CO partial current density of 24.9 mA cm−2 and a maximum CO faradaic efficiency of 97% at −0.9 V for Au-LAL, while it is only 2.77 mA cm−2 and 16.2% for regular Au nanoparticles (Au-A). As revealed by the in situ Raman characterization and density functional theory calculations, the presence of compressive strain can induce a unique electronic structure change in Au NPs, significantly up-shifting the d-band center of Au. Such a phenomenon can greatly enhance the adsorption strength of Au NPs toward the key intermediate of CO2 reduction (i.e., *COOH). More interestingly, we demonstrate that, an important industrial chemical feedstock, syngas, can be obtained by simply mixing Au-LAL with Au-A in a suitable ratio. This work provides a promising method for introducing strain in metal NPs and demonstrates the important role of strain in tuning the performance and selectivity of catalysts.en_US
dc.identifier.doi10.1039/D2NR01400Aen_US
dc.identifier.eissn2040-3372
dc.identifier.urihttp://hdl.handle.net/11693/111433
dc.language.isoEnglishen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isversionofhttps://doi.org/10.1039/D2NR01400Aen_US
dc.source.titleNanoscaleen_US
dc.titleLaser-ablation assisted strain engineering of gold nanoparticles for selective electrochemical CO2 reductionen_US
dc.typeArticleen_US
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