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Atomically Dispersed Copper Sites in a Metal–Organic Framework for Reduction of Nitrogen Dioxide
[Image: see text] Metal–organic framework (MOF) materials provide an excellent platform to fabricate single-atom catalysts due to their structural diversity, intrinsic porosity, and designable functionality. However, the unambiguous identification of atomically dispersed metal sites and the elucidat...
Autores principales: | , , , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8323097/ https://www.ncbi.nlm.nih.gov/pubmed/34279096 http://dx.doi.org/10.1021/jacs.1c03036 |
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author | Ma, Yujie Han, Xue Xu, Shaojun Wang, Zi Li, Weiyao da Silva, Ivan Chansai, Sarayute Lee, Daniel Zou, Yichao Nikiel, Marek Manuel, Pascal Sheveleva, Alena M. Tuna, Floriana McInnes, Eric J. L. Cheng, Yongqiang Rudić, Svemir Ramirez-Cuesta, Anibal J. Haigh, Sarah J. Hardacre, Christopher Schröder, Martin Yang, Sihai |
author_facet | Ma, Yujie Han, Xue Xu, Shaojun Wang, Zi Li, Weiyao da Silva, Ivan Chansai, Sarayute Lee, Daniel Zou, Yichao Nikiel, Marek Manuel, Pascal Sheveleva, Alena M. Tuna, Floriana McInnes, Eric J. L. Cheng, Yongqiang Rudić, Svemir Ramirez-Cuesta, Anibal J. Haigh, Sarah J. Hardacre, Christopher Schröder, Martin Yang, Sihai |
author_sort | Ma, Yujie |
collection | PubMed |
description | [Image: see text] Metal–organic framework (MOF) materials provide an excellent platform to fabricate single-atom catalysts due to their structural diversity, intrinsic porosity, and designable functionality. However, the unambiguous identification of atomically dispersed metal sites and the elucidation of their role in catalysis are challenging due to limited methods of characterization and lack of direct structural information. Here, we report a comprehensive investigation of the structure and the role of atomically dispersed copper sites in UiO-66 for the catalytic reduction of NO(2) at ambient temperature. The atomic dispersion of copper sites on UiO-66 is confirmed by high-angle annular dark-field scanning transmission electron microscopy, electron paramagnetic resonance spectroscopy, and inelastic neutron scattering, and their location is identified by neutron powder diffraction and solid-state nuclear magnetic resonance spectroscopy. The Cu/UiO-66 catalyst exhibits superior catalytic performance for the reduction of NO(2) at 25 °C without the use of reductants. A selectivity of 88% for the formation of N(2) at a 97% conversion of NO(2) with a lifetime of >50 h and an unprecedented turnover frequency of 6.1 h(–1) is achieved under nonthermal plasma activation. In situ and operando infrared, solid-state NMR, and EPR spectroscopy reveal the critical role of copper sites in the adsorption and activation of NO(2) molecules, with the formation of {Cu(I)···NO} and {Cu···NO(2)} adducts promoting the conversion of NO(2) to N(2). This study will inspire the further design and study of new efficient single-atom catalysts for NO(2) abatement via detailed unravelling of their role in catalysis. |
format | Online Article Text |
id | pubmed-8323097 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-83230972021-08-02 Atomically Dispersed Copper Sites in a Metal–Organic Framework for Reduction of Nitrogen Dioxide Ma, Yujie Han, Xue Xu, Shaojun Wang, Zi Li, Weiyao da Silva, Ivan Chansai, Sarayute Lee, Daniel Zou, Yichao Nikiel, Marek Manuel, Pascal Sheveleva, Alena M. Tuna, Floriana McInnes, Eric J. L. Cheng, Yongqiang Rudić, Svemir Ramirez-Cuesta, Anibal J. Haigh, Sarah J. Hardacre, Christopher Schröder, Martin Yang, Sihai J Am Chem Soc [Image: see text] Metal–organic framework (MOF) materials provide an excellent platform to fabricate single-atom catalysts due to their structural diversity, intrinsic porosity, and designable functionality. However, the unambiguous identification of atomically dispersed metal sites and the elucidation of their role in catalysis are challenging due to limited methods of characterization and lack of direct structural information. Here, we report a comprehensive investigation of the structure and the role of atomically dispersed copper sites in UiO-66 for the catalytic reduction of NO(2) at ambient temperature. The atomic dispersion of copper sites on UiO-66 is confirmed by high-angle annular dark-field scanning transmission electron microscopy, electron paramagnetic resonance spectroscopy, and inelastic neutron scattering, and their location is identified by neutron powder diffraction and solid-state nuclear magnetic resonance spectroscopy. The Cu/UiO-66 catalyst exhibits superior catalytic performance for the reduction of NO(2) at 25 °C without the use of reductants. A selectivity of 88% for the formation of N(2) at a 97% conversion of NO(2) with a lifetime of >50 h and an unprecedented turnover frequency of 6.1 h(–1) is achieved under nonthermal plasma activation. In situ and operando infrared, solid-state NMR, and EPR spectroscopy reveal the critical role of copper sites in the adsorption and activation of NO(2) molecules, with the formation of {Cu(I)···NO} and {Cu···NO(2)} adducts promoting the conversion of NO(2) to N(2). This study will inspire the further design and study of new efficient single-atom catalysts for NO(2) abatement via detailed unravelling of their role in catalysis. American Chemical Society 2021-07-19 2021-07-28 /pmc/articles/PMC8323097/ /pubmed/34279096 http://dx.doi.org/10.1021/jacs.1c03036 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Ma, Yujie Han, Xue Xu, Shaojun Wang, Zi Li, Weiyao da Silva, Ivan Chansai, Sarayute Lee, Daniel Zou, Yichao Nikiel, Marek Manuel, Pascal Sheveleva, Alena M. Tuna, Floriana McInnes, Eric J. L. Cheng, Yongqiang Rudić, Svemir Ramirez-Cuesta, Anibal J. Haigh, Sarah J. Hardacre, Christopher Schröder, Martin Yang, Sihai Atomically Dispersed Copper Sites in a Metal–Organic Framework for Reduction of Nitrogen Dioxide |
title | Atomically
Dispersed Copper Sites in a Metal–Organic
Framework for Reduction of Nitrogen Dioxide |
title_full | Atomically
Dispersed Copper Sites in a Metal–Organic
Framework for Reduction of Nitrogen Dioxide |
title_fullStr | Atomically
Dispersed Copper Sites in a Metal–Organic
Framework for Reduction of Nitrogen Dioxide |
title_full_unstemmed | Atomically
Dispersed Copper Sites in a Metal–Organic
Framework for Reduction of Nitrogen Dioxide |
title_short | Atomically
Dispersed Copper Sites in a Metal–Organic
Framework for Reduction of Nitrogen Dioxide |
title_sort | atomically
dispersed copper sites in a metal–organic
framework for reduction of nitrogen dioxide |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8323097/ https://www.ncbi.nlm.nih.gov/pubmed/34279096 http://dx.doi.org/10.1021/jacs.1c03036 |
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