Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-021-22681-4
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dc.titleOrdered clustering of single atomic Te vacancies in atomically thin PtTe2 promotes hydrogen evolution catalysis
dc.contributor.authorLi, Xinzhe
dc.contributor.authorFang, Yiyun
dc.contributor.authorWang, Jun
dc.contributor.authorFang, Hanyan
dc.contributor.authorXi, Shibo
dc.contributor.authorZhao, Xiaoxu
dc.contributor.authorXu, Danyun
dc.contributor.authorXu, Haomin
dc.contributor.authorYu, Wei
dc.contributor.authorHai, Xiao
dc.contributor.authorChen, Cheng
dc.contributor.authorYao, Chuanhao
dc.contributor.authorTao, Hua Bing
dc.contributor.authorHowe, Alexander G. R.
dc.contributor.authorPennycook, Stephen J.
dc.contributor.authorLiu, Bin
dc.contributor.authorLu, Jiong
dc.contributor.authorSu, Chenliang
dc.date.accessioned2022-10-13T06:46:23Z
dc.date.available2022-10-13T06:46:23Z
dc.date.issued2021-04-21
dc.identifier.citationLi, Xinzhe, Fang, Yiyun, Wang, Jun, Fang, Hanyan, Xi, Shibo, Zhao, Xiaoxu, Xu, Danyun, Xu, Haomin, Yu, Wei, Hai, Xiao, Chen, Cheng, Yao, Chuanhao, Tao, Hua Bing, Howe, Alexander G. R., Pennycook, Stephen J., Liu, Bin, Lu, Jiong, Su, Chenliang (2021-04-21). Ordered clustering of single atomic Te vacancies in atomically thin PtTe2 promotes hydrogen evolution catalysis. Nature Communications 12 (1) : 2351. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-021-22681-4
dc.identifier.issn2041-1723
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/233064
dc.description.abstractExposing and stabilizing undercoordinated platinum (Pt) sites and therefore optimizing their adsorption to reactive intermediates offers a desirable strategy to develop highly efficient Pt-based electrocatalysts. However, preparation of atomically controllable Pt-based model catalysts to understand the correlation between electronic structure, adsorption energy, and catalytic properties of atomic Pt sites is still challenging. Herein we report the atomically thin two-dimensional PtTe2 nanosheets with well-dispersed single atomic Te vacancies (Te-SAVs) and atomically well-defined undercoordinated Pt sites as a model electrocatalyst. A controlled thermal treatment drives the migration of the Te-SAVs to form thermodynamically stabilized, ordered Te-SAV clusters, which decreases both the density of states of undercoordinated Pt sites around the Fermi level and the interacting orbital volume of Pt sites. As a result, the binding strength of atomically defined Pt active sites to H intermediates is effectively reduced, which renders PtTe2 nanosheets highly active and stable in hydrogen evolution reaction. © 2021, The Author(s).
dc.publisherNature Research
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceScopus OA2021
dc.typeArticle
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1038/s41467-021-22681-4
dc.description.sourcetitleNature Communications
dc.description.volume12
dc.description.issue1
dc.description.page2351
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