BROWSE

Related Scientist

kasala,prabhakarreddy's photo.

kasala,prabhakarreddy
나노물질및화학반응연구단
more info

ITEM VIEW & DOWNLOAD

Tuning CO2 Hydrogenation Selectivity through Reaction-Driven Restructuring on Cu-Ni Bimetal Catalysts

DC Field Value Language
dc.contributor.authorKasala Prabhakar Reddy-
dc.contributor.authorDaeho Kim-
dc.contributor.authorSeunghwa Hong-
dc.contributor.authorKim, Ki-Jeong-
dc.contributor.authorRyoo, Ryong-
dc.contributor.authorJeong Young Park-
dc.date.accessioned2023-04-04T22:03:24Z-
dc.date.available2023-04-04T22:03:24Z-
dc.date.created2023-03-13-
dc.date.issued2023-02-
dc.identifier.issn1944-8244-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/13099-
dc.description.abstractTuning 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.language영어-
dc.publisherAmerican Chemical Society-
dc.titleTuning CO2 Hydrogenation Selectivity through Reaction-Driven Restructuring on Cu-Ni Bimetal Catalysts-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000932796000001-
dc.identifier.scopusid2-s2.0-85148058859-
dc.identifier.rimsid80217-
dc.contributor.affiliatedAuthorKasala Prabhakar Reddy-
dc.contributor.affiliatedAuthorDaeho Kim-
dc.contributor.affiliatedAuthorSeunghwa Hong-
dc.contributor.affiliatedAuthorJeong Young Park-
dc.identifier.doi10.1021/acsami.2c20832-
dc.identifier.bibliographicCitationACS Applied Materials & Interfaces, v.15, no.7, pp.9373 - 9381-
dc.relation.isPartOfACS Applied Materials & Interfaces-
dc.citation.titleACS Applied Materials & Interfaces-
dc.citation.volume15-
dc.citation.number7-
dc.citation.startPage9373-
dc.citation.endPage9381-
dc.type.docTypeArticle; Early Access-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalWebOfScienceCategoryNanoscience & Nanotechnology-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.subject.keywordPlusWATER-GAS SHIFT-
dc.subject.keywordPlusNANOPARTICLES-
dc.subject.keywordPlusSPECTROSCOPY-
dc.subject.keywordPlusMETHANATION-
dc.subject.keywordPlusMETHANOL-
dc.subject.keywordPlusCERIA-
dc.subject.keywordAuthorCu-Ni alloy-
dc.subject.keywordAuthorCO2 hydrogenation-
dc.subject.keywordAuthorsurface restructuring-
dc.subject.keywordAuthorin situ DRIFT-
dc.subject.keywordAuthorambient pressure X-ray photoelectron spectroscopy-
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse