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Terminal Hydroxyl Groups on Al(2)O(3) Supports Influence the Valence State and Dispersity of Ag Nanoparticles: Implications for Ozone Decomposition
[Image: see text] Ozone is a poisonous gas, so it is necessary to remove excessive ozone in the environment. Catalytic decomposition is an effective way to remove ozone at room temperature. In this work, 10%Ag/nano-Al(2)O(3) and 10%Ag/AlOOH-900 catalysts were synthesized by the impregnation method....
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/PMC8153745/ https://www.ncbi.nlm.nih.gov/pubmed/34056225 http://dx.doi.org/10.1021/acsomega.1c00220 |
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author | Shao, Xufei Li, Xiaotong Ma, Jinzhu Zhang, Runduo He, Hong |
author_facet | Shao, Xufei Li, Xiaotong Ma, Jinzhu Zhang, Runduo He, Hong |
author_sort | Shao, Xufei |
collection | PubMed |
description | [Image: see text] Ozone is a poisonous gas, so it is necessary to remove excessive ozone in the environment. Catalytic decomposition is an effective way to remove ozone at room temperature. In this work, 10%Ag/nano-Al(2)O(3) and 10%Ag/AlOOH-900 catalysts were synthesized by the impregnation method. The 10%Ag/nano-Al(2)O(3) catalyst showed 89% ozone conversion for 40 ppm O(3) for 6 h under a space velocity of 840 000 h(–1) and a relative humidity of 65%, which is superior to 10%Ag/AlOOH-900 (45% conversion). The characterization results showed Ag nanoparticles to be the active sites for ozone decomposition, which were more highly dispersed on nano-Al(2)O(3) as a result of the greater density of terminal hydroxyl groups. The understanding of the dispersion and valence of silver species gained in this study will be beneficial to the design of more efficient supported silver catalysts for ozone decomposition in the future. |
format | Online Article Text |
id | pubmed-8153745 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-81537452021-05-27 Terminal Hydroxyl Groups on Al(2)O(3) Supports Influence the Valence State and Dispersity of Ag Nanoparticles: Implications for Ozone Decomposition Shao, Xufei Li, Xiaotong Ma, Jinzhu Zhang, Runduo He, Hong ACS Omega [Image: see text] Ozone is a poisonous gas, so it is necessary to remove excessive ozone in the environment. Catalytic decomposition is an effective way to remove ozone at room temperature. In this work, 10%Ag/nano-Al(2)O(3) and 10%Ag/AlOOH-900 catalysts were synthesized by the impregnation method. The 10%Ag/nano-Al(2)O(3) catalyst showed 89% ozone conversion for 40 ppm O(3) for 6 h under a space velocity of 840 000 h(–1) and a relative humidity of 65%, which is superior to 10%Ag/AlOOH-900 (45% conversion). The characterization results showed Ag nanoparticles to be the active sites for ozone decomposition, which were more highly dispersed on nano-Al(2)O(3) as a result of the greater density of terminal hydroxyl groups. The understanding of the dispersion and valence of silver species gained in this study will be beneficial to the design of more efficient supported silver catalysts for ozone decomposition in the future. American Chemical Society 2021-03-31 /pmc/articles/PMC8153745/ /pubmed/34056225 http://dx.doi.org/10.1021/acsomega.1c00220 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Shao, Xufei Li, Xiaotong Ma, Jinzhu Zhang, Runduo He, Hong Terminal Hydroxyl Groups on Al(2)O(3) Supports Influence the Valence State and Dispersity of Ag Nanoparticles: Implications for Ozone Decomposition |
title | Terminal Hydroxyl Groups on Al(2)O(3) Supports
Influence the Valence State and Dispersity of Ag Nanoparticles:
Implications for Ozone Decomposition |
title_full | Terminal Hydroxyl Groups on Al(2)O(3) Supports
Influence the Valence State and Dispersity of Ag Nanoparticles:
Implications for Ozone Decomposition |
title_fullStr | Terminal Hydroxyl Groups on Al(2)O(3) Supports
Influence the Valence State and Dispersity of Ag Nanoparticles:
Implications for Ozone Decomposition |
title_full_unstemmed | Terminal Hydroxyl Groups on Al(2)O(3) Supports
Influence the Valence State and Dispersity of Ag Nanoparticles:
Implications for Ozone Decomposition |
title_short | Terminal Hydroxyl Groups on Al(2)O(3) Supports
Influence the Valence State and Dispersity of Ag Nanoparticles:
Implications for Ozone Decomposition |
title_sort | terminal hydroxyl groups on al(2)o(3) supports
influence the valence state and dispersity of ag nanoparticles:
implications for ozone decomposition |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153745/ https://www.ncbi.nlm.nih.gov/pubmed/34056225 http://dx.doi.org/10.1021/acsomega.1c00220 |
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