DC Field | Value | Language |
---|---|---|
dc.contributor.author | Reddy, Kasala Prabhakar | ko |
dc.contributor.author | Kim, Daeho | ko |
dc.contributor.author | Hong, Seunghwa | ko |
dc.contributor.author | Kim, Ki-Jeong | ko |
dc.contributor.author | Ryoo, Ryong | ko |
dc.contributor.author | Park, Jeong Young | ko |
dc.date.accessioned | 2023-12-11T00:00:12Z | - |
dc.date.available | 2023-12-11T00:00:12Z | - |
dc.date.created | 2023-03-13 | - |
dc.date.issued | 2023-02 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v.15, no.7, pp.9373 - 9381 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://hdl.handle.net/10203/316194 | - |
dc.description.abstract | Tuning the selectivity of CO2 hydrogenation is of significant scientific interest, especially using nickel-based catalysts. Fundamental insights into CO2 hydrogenation on Ni-based catalysts demonstrate that CO is a primary intermediate, and product selectivity is strongly dependent on the oxidation state of Ni. Therefore, modifying the electronic structure of the nickel surface is a compelling strategy for tuning product selectivity. Herein, we synthesized well dispersed Cu-Ni bimetallic nanoparticles (NPs) using a simple hydrothermal method for CO selective CO2 hydrogenation. A detailed study on the monometallic (Ni and Cu) and bimetallic (CuxNi1-x) catalysts supported on gamma-Al2O3 was performed to increase CO selectivity while maintaining the high reaction rate. The Cu0.5Ni0.5/gamma-Al2O3 catalyst shows a high CO2 conversion and more CO product selectivity than its monometallic counterparts. The surface electronic and geometric structure of Cu0.5Ni0.5 bimetallic NPs was studied using ambient pressure X-ray photoelectron spectroscopy (AP-XPS) and in situ diffuse reflectance infrared Fourier-transform spectroscopy under reaction conditions. The Cu core atoms migrate toward the surface, resulting in the restructuring of the Cu@Ni core-shell structure to a Cu-Ni alloy during the reaction and functioning as the active site by enhancing CO desorption. A systematic correlation is obtained between catalytic activity from a continuous fixed-bed flow reactor and the surface electronic structural details derived from AP-XPS results, establishing the structure-activity relationship. This investigation contributes to providing a strategy for controlling CO2 hydrogenation selectivity by modifying the surface structure of bimetallic NP catalysts. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Tuning CO2 Hydrogenation Selectivity through Reaction-Driven Restructuring on Cu-Ni Bimetal Catalysts | - |
dc.type | Article | - |
dc.identifier.wosid | 000932796000001 | - |
dc.identifier.scopusid | 2-s2.0-85148058859 | - |
dc.type.rims | ART | - |
dc.citation.volume | 15 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 9373 | - |
dc.citation.endingpage | 9381 | - |
dc.citation.publicationname | ACS APPLIED MATERIALS & INTERFACES | - |
dc.identifier.doi | 10.1021/acsami.2c20832 | - |
dc.contributor.localauthor | Park, Jeong Young | - |
dc.contributor.nonIdAuthor | Reddy, Kasala Prabhakar | - |
dc.contributor.nonIdAuthor | Kim, Ki-Jeong | - |
dc.contributor.nonIdAuthor | Ryoo, Ryong | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Cu-Ni alloy | - |
dc.subject.keywordAuthor | CO2 hydrogenation | - |
dc.subject.keywordAuthor | surface restructuring | - |
dc.subject.keywordAuthor | in situ DRIFT | - |
dc.subject.keywordAuthor | ambient pressure X-ray photoelectron spectroscopy | - |
dc.subject.keywordPlus | WATER-GAS SHIFT | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | METHANATION | - |
dc.subject.keywordPlus | METHANOL | - |
dc.subject.keywordPlus | CERIA | - |
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