Octahedral PtNi nanoparticles with controlled surface structure and composition for oxygen reduction reaction
DC Field | Value | Language |
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dc.contributor.author | Lu, Yizhong | - |
dc.contributor.author | Thia, Larissa | - |
dc.contributor.author | Fisher, Adrian | - |
dc.contributor.author | Jung, Chi-Young | - |
dc.contributor.author | Yi, Sung Chul | - |
dc.contributor.author | Wang, Xin | - |
dc.date.accessioned | 2022-07-12T23:51:28Z | - |
dc.date.available | 2022-07-12T23:51:28Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2017-11 | - |
dc.identifier.issn | 2095-8226 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/151235 | - |
dc.description.abstract | Controlling the surface structure and composition at the atomic level is an effective way to tune the catalytic properties of bimetallic catalysts. Herein, we demonstrate a generalized strategy to synthesize highly monodisperse, surfactant-free octahedral PtxNi1-x nanoparticles with tunable surface structure and composition. With increasing the Ni content in the bulk composition, the degree of concaveness of the octahedral PtxNi1-x nanoparticles increases. We systematically studied the correlation between their surface structure/composition and their observed oxygen reduction activity. Electrochemical studies have shown that all the octahedral PtxNi1-x nanoparticles exhibit enhanced oxygen reduction activity relative to the state-of-the-art commercial Pt/C catalyst. More importantly, we find that the surface structure and composition of the octahedral PtxNi1-x nanoparticles have significant effect on their oxygen reduction activity. Among the studied PtxNi1-x nanoparticles, the octahedral Pt1Ni1 nanoparticles with slight concaveness in its (111) facet show the highest activity. At 0.90 V vs. RHE, the Pt mass and specific activity of the octahedral Pt1Ni1 nanoparticles are 7.0 and 7.5-fold higher than that of commercial Pt/C catalyst, respectively. The present work not only provides a generalized strategy to synthesize highly monodisperse, surfactant-free octahedral PtxNi1-x nanoparticles with tunable surface structure and composition, but also provides insights to the structure-activity correlation. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | SCIENCE PRESS | - |
dc.title | Octahedral PtNi nanoparticles with controlled surface structure and composition for oxygen reduction reaction | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yi, Sung Chul | - |
dc.identifier.doi | 10.1007/s40843-017-9029-5 | - |
dc.identifier.scopusid | 2-s2.0-85035022870 | - |
dc.identifier.wosid | 000416928700007 | - |
dc.identifier.bibliographicCitation | SCIENCE CHINA-MATERIALS, v.60, no.11, pp.1109 - 1120 | - |
dc.relation.isPartOf | SCIENCE CHINA-MATERIALS | - |
dc.citation.title | SCIENCE CHINA-MATERIALS | - |
dc.citation.volume | 60 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 1109 | - |
dc.citation.endPage | 1120 | - |
dc.type.rims | ART | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | ENHANCED ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | ONE-POT SYNTHESIS | - |
dc.subject.keywordPlus | ALLOY NANOPARTICLES | - |
dc.subject.keywordPlus | TUNABLE COMPOSITION | - |
dc.subject.keywordPlus | ANISOTROPIC GROWTH | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | FACETS | - |
dc.subject.keywordAuthor | PtNi | - |
dc.subject.keywordAuthor | octahedral | - |
dc.subject.keywordAuthor | concave | - |
dc.subject.keywordAuthor | surface structure | - |
dc.subject.keywordAuthor | oxygen reduction reaction | - |
dc.identifier.url | https://link.springer.com/article/10.1007/s40843-017-9029-5 | - |
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