Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature

[Image: see text] A modified confined catalyst with Pt nanoparticles on the interior and Fe(2)O(3) on the exterior surface of TiO(2) nanotubes (Pt-in/Fe(2)O(3)-TNTs) was prepared and investigated for catalyzing the oxidation of ethylene. Compared with the Pt-in/TNTs without Fe(2)O(3) modification, t...

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Autores principales: Li, Juan, Wu, Liangpeng, Wang, Nan, Li, Xinjun, Cen, Chaoping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153978/
https://www.ncbi.nlm.nih.gov/pubmed/34056308
http://dx.doi.org/10.1021/acsomega.1c00665
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author Li, Juan
Wu, Liangpeng
Wang, Nan
Li, Xinjun
Cen, Chaoping
author_facet Li, Juan
Wu, Liangpeng
Wang, Nan
Li, Xinjun
Cen, Chaoping
author_sort Li, Juan
collection PubMed
description [Image: see text] A modified confined catalyst with Pt nanoparticles on the interior and Fe(2)O(3) on the exterior surface of TiO(2) nanotubes (Pt-in/Fe(2)O(3)-TNTs) was prepared and investigated for catalyzing the oxidation of ethylene. Compared with the Pt-in/TNTs without Fe(2)O(3) modification, the Pt-in/Fe(2)O(3)-TNTs exhibited a significantly enhanced activity, and the complete conversion temperature of ethylene decreased from 170 to 95 °C. X-ray photoelectron spectroscopy analysis indicated that the Pt nanoparticles were stabilized at higher oxidation states in the Pt-in/Fe(2)O(3)-TNT catalyst. It was proposed that the modification of Fe(2)O(3) on the outer surface can tune the electronic state of the encapsulated Pt particles and accelerate the electrons transferred from Pt to Fe species via TiO(2) nanotubes, thus improving the catalytic oxidation performance of the confined catalyst.
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spelling pubmed-81539782021-05-27 Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature Li, Juan Wu, Liangpeng Wang, Nan Li, Xinjun Cen, Chaoping ACS Omega [Image: see text] A modified confined catalyst with Pt nanoparticles on the interior and Fe(2)O(3) on the exterior surface of TiO(2) nanotubes (Pt-in/Fe(2)O(3)-TNTs) was prepared and investigated for catalyzing the oxidation of ethylene. Compared with the Pt-in/TNTs without Fe(2)O(3) modification, the Pt-in/Fe(2)O(3)-TNTs exhibited a significantly enhanced activity, and the complete conversion temperature of ethylene decreased from 170 to 95 °C. X-ray photoelectron spectroscopy analysis indicated that the Pt nanoparticles were stabilized at higher oxidation states in the Pt-in/Fe(2)O(3)-TNT catalyst. It was proposed that the modification of Fe(2)O(3) on the outer surface can tune the electronic state of the encapsulated Pt particles and accelerate the electrons transferred from Pt to Fe species via TiO(2) nanotubes, thus improving the catalytic oxidation performance of the confined catalyst. American Chemical Society 2021-04-20 /pmc/articles/PMC8153978/ /pubmed/34056308 http://dx.doi.org/10.1021/acsomega.1c00665 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 Li, Juan
Wu, Liangpeng
Wang, Nan
Li, Xinjun
Cen, Chaoping
Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature
title Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature
title_full Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature
title_fullStr Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature
title_full_unstemmed Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature
title_short Promotion of TiO(2) Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe(2)O(3) for Ethylene Oxidation at Low Temperature
title_sort promotion of tio(2) nanotube-confined pt nanoparticles via surface modification with fe(2)o(3) for ethylene oxidation at low temperature
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153978/
https://www.ncbi.nlm.nih.gov/pubmed/34056308
http://dx.doi.org/10.1021/acsomega.1c00665
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