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DC Field | Value | Language |
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dc.citation.endPage | 2979 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 2976 | - |
dc.citation.title | NANO LETTERS | - |
dc.citation.volume | 13 | - |
dc.contributor.author | Wang, Hailiang | - |
dc.contributor.author | Wang, Yihai | - |
dc.contributor.author | Zhu, Zhongwei | - |
dc.contributor.author | Sapi, Andras | - |
dc.contributor.author | An, Kwangjin | - |
dc.contributor.author | Kennedy, Griffin | - |
dc.contributor.author | Michalak, William D. | - |
dc.contributor.author | Somorjai, Gabor A. | - |
dc.date.accessioned | 2023-12-22T04:06:35Z | - |
dc.date.available | 2023-12-22T04:06:35Z | - |
dc.date.created | 2015-07-28 | - |
dc.date.issued | 2013-05 | - |
dc.description.abstract | Pt nanoparticles with various sizes of 1, 2, 4, and 6 nm were synthesized and studied as catalysts for gas-phase methanol oxidation reaction toward formaldehyde and carbon dioxide under ambient pressure (10 Torr of methanol, 50 Torr of oxygen, and 710 Torr of helium) at a low temperature of 60 °C. While the 2, 4, and 6 nm nanoparticles exhibited similar catalytic activity and selectivity, the 1 nm nanoparticles showed a significantly higher selectivity toward partial oxidation of methanol to formaldehyde, but a lower total turnover frequency. The observed size effect in catalysis was correlated to the size-dependent structure and oxidation state of the Pt nanoparticles. X-ray photoelectron spectroscopy and infrared vibrational spectroscopy using adsorbed CO as molecular probes revealed that the 1 nm nanoparticles were predominantly oxidized while the 2, 4, and 6 nm nanoparticles were largely metallic. Transmission electron microscopy imaging witnessed the transition from crystalline to quasicrystalline structure as the size of the Pt nanoparticles was reduced to 1 nm. The results highlighted the important impact of size-induced oxidation state of Pt nanoparticles on catalytic selectivity as well as activity in gas-phase methanol oxidation reactions. © 2013 American Chemical Society. | - |
dc.identifier.bibliographicCitation | NANO LETTERS, v.13, no.6, pp.2976 - 2979 | - |
dc.identifier.doi | 10.1021/nl401568x | - |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.scopusid | 2-s2.0-84879114292 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12800 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/nl401568x | - |
dc.identifier.wosid | 000320485100107 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Influence of Size-Induced Oxidation State of Platinum Nanoparticles on Selectivity and Activity in Catalytic Methanol Oxidation in the Gas Phase | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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