Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity

Constructing single atom catalysts with fine-tuned coordination environments can be a promising strategy to achieve satisfactory catalytic performance. Herein, via a simple calcination temperature-control strategy, CeO(2) supported Pt single atom catalysts with precisely controlled coordination envi...

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Autores principales: Tan, Wei, Xie, Shaohua, Le, Duy, Diao, Weijian, Wang, Meiyu, Low, Ke-Bin, Austin, Dave, Hong, Sampyo, Gao, Fei, Dong, Lin, Ma, Lu, Ehrlich, Steven N., Rahman, Talat S., Liu, Fudong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9674627/
https://www.ncbi.nlm.nih.gov/pubmed/36400791
http://dx.doi.org/10.1038/s41467-022-34797-2
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author Tan, Wei
Xie, Shaohua
Le, Duy
Diao, Weijian
Wang, Meiyu
Low, Ke-Bin
Austin, Dave
Hong, Sampyo
Gao, Fei
Dong, Lin
Ma, Lu
Ehrlich, Steven N.
Rahman, Talat S.
Liu, Fudong
author_facet Tan, Wei
Xie, Shaohua
Le, Duy
Diao, Weijian
Wang, Meiyu
Low, Ke-Bin
Austin, Dave
Hong, Sampyo
Gao, Fei
Dong, Lin
Ma, Lu
Ehrlich, Steven N.
Rahman, Talat S.
Liu, Fudong
author_sort Tan, Wei
collection PubMed
description Constructing single atom catalysts with fine-tuned coordination environments can be a promising strategy to achieve satisfactory catalytic performance. Herein, via a simple calcination temperature-control strategy, CeO(2) supported Pt single atom catalysts with precisely controlled coordination environments are successfully fabricated. The joint experimental and theoretical analysis reveals that the Pt single atoms on Pt(1)/CeO(2) prepared at 550 °C (Pt/CeO(2)-550) are mainly located at the edge sites of CeO(2) with a Pt–O coordination number of ca. 5, while those prepared at 800 °C (Pt/CeO(2)-800) are predominantly located at distorted Ce substitution sites on CeO(2) terrace with a Pt–O coordination number of ca. 4. Pt/CeO(2)-550 and Pt/CeO(2)-800 with different Pt(1)-CeO(2) coordination environments exhibit a reversal of activity trend in CO oxidation and NH(3) oxidation due to their different privileges in reactants activation and H(2)O desorption, suggesting that the catalytic performance of Pt single atom catalysts in different target reactions can be maximized by optimizing their local coordination structures.
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spelling pubmed-96746272022-11-20 Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity Tan, Wei Xie, Shaohua Le, Duy Diao, Weijian Wang, Meiyu Low, Ke-Bin Austin, Dave Hong, Sampyo Gao, Fei Dong, Lin Ma, Lu Ehrlich, Steven N. Rahman, Talat S. Liu, Fudong Nat Commun Article Constructing single atom catalysts with fine-tuned coordination environments can be a promising strategy to achieve satisfactory catalytic performance. Herein, via a simple calcination temperature-control strategy, CeO(2) supported Pt single atom catalysts with precisely controlled coordination environments are successfully fabricated. The joint experimental and theoretical analysis reveals that the Pt single atoms on Pt(1)/CeO(2) prepared at 550 °C (Pt/CeO(2)-550) are mainly located at the edge sites of CeO(2) with a Pt–O coordination number of ca. 5, while those prepared at 800 °C (Pt/CeO(2)-800) are predominantly located at distorted Ce substitution sites on CeO(2) terrace with a Pt–O coordination number of ca. 4. Pt/CeO(2)-550 and Pt/CeO(2)-800 with different Pt(1)-CeO(2) coordination environments exhibit a reversal of activity trend in CO oxidation and NH(3) oxidation due to their different privileges in reactants activation and H(2)O desorption, suggesting that the catalytic performance of Pt single atom catalysts in different target reactions can be maximized by optimizing their local coordination structures. Nature Publishing Group UK 2022-11-18 /pmc/articles/PMC9674627/ /pubmed/36400791 http://dx.doi.org/10.1038/s41467-022-34797-2 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Tan, Wei
Xie, Shaohua
Le, Duy
Diao, Weijian
Wang, Meiyu
Low, Ke-Bin
Austin, Dave
Hong, Sampyo
Gao, Fei
Dong, Lin
Ma, Lu
Ehrlich, Steven N.
Rahman, Talat S.
Liu, Fudong
Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity
title Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity
title_full Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity
title_fullStr Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity
title_full_unstemmed Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity
title_short Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity
title_sort fine-tuned local coordination environment of pt single atoms on ceria controls catalytic reactivity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9674627/
https://www.ncbi.nlm.nih.gov/pubmed/36400791
http://dx.doi.org/10.1038/s41467-022-34797-2
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