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Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis

The grand challenge in the development of atomically dispersed metallic catalysts is their low metal-atom loading density, uncontrollable localization and ambiguous interactions with supports, posing difficulty in maximizing their catalytic performance. Here, we achieve an interface catalyst consist...

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Detalles Bibliográficos
Autores principales: Qi, Kun, Cui, Xiaoqiang, Gu, Lin, Yu, Shansheng, Fan, Xiaofeng, Luo, Mingchuan, Xu, Shan, Li, Ningbo, Zheng, Lirong, Zhang, Qinghua, Ma, Jingyuan, Gong, Yue, Lv, Fan, Wang, Kai, Huang, Haihua, Zhang, Wei, Guo, Shaojun, Zheng, Weitao, Liu, Ping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6863867/
https://www.ncbi.nlm.nih.gov/pubmed/31745074
http://dx.doi.org/10.1038/s41467-019-12997-7
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author Qi, Kun
Cui, Xiaoqiang
Gu, Lin
Yu, Shansheng
Fan, Xiaofeng
Luo, Mingchuan
Xu, Shan
Li, Ningbo
Zheng, Lirong
Zhang, Qinghua
Ma, Jingyuan
Gong, Yue
Lv, Fan
Wang, Kai
Huang, Haihua
Zhang, Wei
Guo, Shaojun
Zheng, Weitao
Liu, Ping
author_facet Qi, Kun
Cui, Xiaoqiang
Gu, Lin
Yu, Shansheng
Fan, Xiaofeng
Luo, Mingchuan
Xu, Shan
Li, Ningbo
Zheng, Lirong
Zhang, Qinghua
Ma, Jingyuan
Gong, Yue
Lv, Fan
Wang, Kai
Huang, Haihua
Zhang, Wei
Guo, Shaojun
Zheng, Weitao
Liu, Ping
author_sort Qi, Kun
collection PubMed
description The grand challenge in the development of atomically dispersed metallic catalysts is their low metal-atom loading density, uncontrollable localization and ambiguous interactions with supports, posing difficulty in maximizing their catalytic performance. Here, we achieve an interface catalyst consisting of atomic cobalt array covalently bound to distorted 1T MoS(2) nanosheets (SA Co-D 1T MoS(2)). The phase of MoS(2) transforming from 2H to D-1T, induced by strain from lattice mismatch and formation of Co-S covalent bond between Co and MoS(2) during the assembly, is found to be essential to form the highly active single-atom array catalyst. SA Co-D 1T MoS(2) achieves Pt-like activity toward HER and high long-term stability. Active-site blocking experiment together with density functional theory (DFT) calculations reveal that the superior catalytic behaviour is associated with an ensemble effect via the synergy of Co adatom and S of the D-1T MoS(2) support by tuning hydrogen binding mode at the interface.
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spelling pubmed-68638672019-11-21 Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis Qi, Kun Cui, Xiaoqiang Gu, Lin Yu, Shansheng Fan, Xiaofeng Luo, Mingchuan Xu, Shan Li, Ningbo Zheng, Lirong Zhang, Qinghua Ma, Jingyuan Gong, Yue Lv, Fan Wang, Kai Huang, Haihua Zhang, Wei Guo, Shaojun Zheng, Weitao Liu, Ping Nat Commun Article The grand challenge in the development of atomically dispersed metallic catalysts is their low metal-atom loading density, uncontrollable localization and ambiguous interactions with supports, posing difficulty in maximizing their catalytic performance. Here, we achieve an interface catalyst consisting of atomic cobalt array covalently bound to distorted 1T MoS(2) nanosheets (SA Co-D 1T MoS(2)). The phase of MoS(2) transforming from 2H to D-1T, induced by strain from lattice mismatch and formation of Co-S covalent bond between Co and MoS(2) during the assembly, is found to be essential to form the highly active single-atom array catalyst. SA Co-D 1T MoS(2) achieves Pt-like activity toward HER and high long-term stability. Active-site blocking experiment together with density functional theory (DFT) calculations reveal that the superior catalytic behaviour is associated with an ensemble effect via the synergy of Co adatom and S of the D-1T MoS(2) support by tuning hydrogen binding mode at the interface. Nature Publishing Group UK 2019-11-19 /pmc/articles/PMC6863867/ /pubmed/31745074 http://dx.doi.org/10.1038/s41467-019-12997-7 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Qi, Kun
Cui, Xiaoqiang
Gu, Lin
Yu, Shansheng
Fan, Xiaofeng
Luo, Mingchuan
Xu, Shan
Li, Ningbo
Zheng, Lirong
Zhang, Qinghua
Ma, Jingyuan
Gong, Yue
Lv, Fan
Wang, Kai
Huang, Haihua
Zhang, Wei
Guo, Shaojun
Zheng, Weitao
Liu, Ping
Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis
title Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis
title_full Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis
title_fullStr Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis
title_full_unstemmed Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis
title_short Single-atom cobalt array bound to distorted 1T MoS(2) with ensemble effect for hydrogen evolution catalysis
title_sort single-atom cobalt array bound to distorted 1t mos(2) with ensemble effect for hydrogen evolution catalysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6863867/
https://www.ncbi.nlm.nih.gov/pubmed/31745074
http://dx.doi.org/10.1038/s41467-019-12997-7
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