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DC Field | Value | Language |
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dc.citation.endPage | 7150 | - |
dc.citation.number | 15 | - |
dc.citation.startPage | 7142 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.citation.volume | 127 | - |
dc.contributor.author | Kim, Haneul | - |
dc.contributor.author | Kim, Joonwoo | - |
dc.contributor.author | Kwak, Ja Hun | - |
dc.date.accessioned | 2023-12-21T12:42:27Z | - |
dc.date.available | 2023-12-21T12:42:27Z | - |
dc.date.created | 2023-05-11 | - |
dc.date.issued | 2023-04 | - |
dc.description.abstract | Herein, we show that the weak interaction of CO with Pt/TiO2 under the CO oxidation condition is the origin of higher CO oxidation activity of Pt/rutile than that of Pt/anatase. The results of CO temperature-programmed desorption (TPD) and in situ diffuse reflectance infrared Fourier transform spectros-copy (DRIFTS) indicate that the onset temperatures of CO desorption on freshly prepared Pt/rutile and Pt/anatase are the same. However, the CO-TPD curves of Pt/rutile after the reaction test show that the desorption temperature of CO shifts to a lower temperature, while that for Pt/anatase does not change. The in situ pulse reaction using DRIFTS reveals that CO on Pt/rutile reacted with oxygen faster than CO on Pt/anatase. IR spectra with peak deconvolution of adsorbed CO on Pt/rutile exhibit that CO adsorbed on the terrace sites of Pt clusters on rutile (2089 cm-1) reacts readily with O2. These results indicate that the higher low-temperature activity of Pt/rutile is related to its weaker interaction with CO compared with Pt/anatase under the reaction conditions. Our findings deepen the fundamental understanding of metal-support interaction and CO oxidation on Pt/TiO2 catalysts. | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY C, v.127, no.15, pp.7142 - 7150 | - |
dc.identifier.doi | 10.1021/acs.jpcc.3c00159 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.scopusid | 2-s2.0-85152682827 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/64326 | - |
dc.identifier.wosid | 000970552600001 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Origin of Higher CO Oxidation Activity of Pt/Rutile than That of Pt/ Anatase | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | TIO2 | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | METAL-SUPPORT INTERACTIONS | - |
dc.subject.keywordPlus | STABLE SINGLE-ATOM | - |
dc.subject.keywordPlus | PT/TIO2 CATALYSTS | - |
dc.subject.keywordPlus | CARBON-MONOXIDE | - |
dc.subject.keywordPlus | SPECTROSCOPIC OBSERVATION | - |
dc.subject.keywordPlus | FTIR SPECTROSCOPY | - |
dc.subject.keywordPlus | PARTICLE-SIZE | - |
dc.subject.keywordPlus | TEMPERATURE | - |
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