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DC Field | Value | Language |
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dc.citation.endPage | 12246 | - |
dc.citation.number | 19 | - |
dc.citation.startPage | 12232 | - |
dc.citation.title | ACS CATALYSIS | - |
dc.citation.volume | 11 | - |
dc.contributor.author | Lim, Taejung | - |
dc.contributor.author | Kim, Jae Hyung | - |
dc.contributor.author | Kim, Jinjong | - |
dc.contributor.author | Baek, Du San | - |
dc.contributor.author | Shin, Tae Joo | - |
dc.contributor.author | Jeong, Hu Young | - |
dc.contributor.author | Lee, Kug-Seung | - |
dc.contributor.author | Exner, Kai S. | - |
dc.contributor.author | Joo, Sang Hoon | - |
dc.date.accessioned | 2023-12-21T15:11:37Z | - |
dc.date.available | 2023-12-21T15:11:37Z | - |
dc.date.created | 2021-10-08 | - |
dc.date.issued | 2021-10 | - |
dc.description.abstract | The electrochemical chlorine evolution reaction (CER) is a key anodic reaction in the chlor-alkali process for Cl-2 production, on-site generation of ClO-, and Cl-2-mediated electrosynthesis. Although Ru-based mixed metal oxides have long been used as CER catalysts, they suffer from a selectivity problem due to the competing oxygen evolution reaction. To overcome this shortcoming, we have developed a new CER catalyst composed of atomically dispersed Pt-N-4 sites on carbon nanotubes (Pt-1/CNT). In this study, we demonstrate that the catalytically active Pt-N4 sites can be constructed from H2PtCl6 center dot 6H(2)O and an ionic liquid via a bottom-up approach and a Pt-porphyrin-driven top-down method. Both catalysts exhibit excellent CER activity and remarkable selectivity, demonstrating the general efficacy of Pt-1/CNT for the CER. The electrochemical and in situ X-ray absorption spectroscopy analyses reveal that Pt1/CNT catalysts show a reaction order of similar to 1.8 in the low overpotential regime, where the Volmer step is reconciled with the rate-determining step (RDS). Interestingly, in the high overpotential region, the CER over Pt-1/CNT proceeds with a lower reaction order and the RDS switches to the Heyrovsky step. These unprecedented kinetic insights are clearly distinguished from the oxide-based CER catalysts with the opposite sequence of the RDS. | - |
dc.identifier.bibliographicCitation | ACS CATALYSIS, v.11, no.19, pp.12232 - 12246 | - |
dc.identifier.doi | 10.1021/acscatal.1c03893 | - |
dc.identifier.issn | 2155-5435 | - |
dc.identifier.scopusid | 2-s2.0-85116010508 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54111 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acscatal.1c03893 | - |
dc.identifier.wosid | 000704700800040 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | General Efficacy of Atomically Dispersed Pt Catalysts for the Chlorine Evolution Reaction: Potential-Dependent Switching of the Kinetics and Mechanism | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | atomically dispersed catalystplatinumchlorine evolution reactionelectrocatalysisreaction kinetics | - |
dc.subject.keywordPlus | FREE-ENERGY DIAGRAMOXYGEN REDUCTION REACTIONFE-N/C ELECTROCATALYSTSANODIC CHLORINESELECTIVITYSPECTROSCOPYOXIDESXANESSITESRUO2-TIO2/TI | - |
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