Roles of Oxygen Vacancies of CeO2 and Mn-Doped CeO2 with the Same Morphology in Benzene Catalytic Oxidation

Mn-doped CeO2 and CeO2 with the same morphology (nanofiber and nanocube) have been synthesized through hydrothermal method. When applied to benzene oxidation, the catalytic performance of Mn-doped CeO2 is better than that of CeO<...

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Autores principales:	Min Yang, Genli Shen, Qi Wang, Ke Deng, Mi Liu, Yunfa Chen, Yan Gong, Zhen Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Mn-doped CeO<sub>2</sub> pure CeO<sub>2</sub> morphology oxygen vacancy benzene oxidation Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/322f3cd92789460796b06e48478596a8
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spelling	oai:doaj.org-article:322f3cd92789460796b06e48478596a82021-11-11T18:23:58ZRoles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation10.3390/molecules262163631420-3049https://doaj.org/article/322f3cd92789460796b06e48478596a82021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6363https://doaj.org/toc/1420-3049Mn-doped CeO<sub>2</sub> and CeO<sub>2</sub> with the same morphology (nanofiber and nanocube) have been synthesized through hydrothermal method. When applied to benzene oxidation, the catalytic performance of Mn-doped CeO<sub>2</sub> is better than that of CeO<sub>2</sub>, due to the difference of the concentration of O vacancy. Compared to CeO<sub>2</sub> with the same morphology, more oxygen vacancies were generated on the surface of Mn-doped CeO<sub>2</sub>, due to the replacement of Ce ion with Mn ion. The lattice replacement has been analyzed through XRD, Raman, electron energy loss spectroscopy and electron paramagnetic resonance technology. The formation energies of oxygen vacancy on the different exposed crystal planes such as (110) and (100) for Mn-doped CeO<sub>2</sub> were calculated by the density functional theory (DFT). The results show that the oxygen vacancy is easier to be formed on the (110) plane. Other factors influencing catalytic behavior have also been investigated, indicating that the surface oxygen vacancy plays a crucial role in catalytic reaction.Min YangGenli ShenQi WangKe DengMi LiuYunfa ChenYan GongZhen WangMDPI AGarticleMn-doped CeO<sub>2</sub>pure CeO<sub>2</sub>morphologyoxygen vacancybenzene oxidationOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6363, p 6363 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mn-doped CeO<sub>2</sub> pure CeO<sub>2</sub> morphology oxygen vacancy benzene oxidation Organic chemistry QD241-441
spellingShingle	Mn-doped CeO<sub>2</sub> pure CeO<sub>2</sub> morphology oxygen vacancy benzene oxidation Organic chemistry QD241-441 Min Yang Genli Shen Qi Wang Ke Deng Mi Liu Yunfa Chen Yan Gong Zhen Wang Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation
description	Mn-doped CeO<sub>2</sub> and CeO<sub>2</sub> with the same morphology (nanofiber and nanocube) have been synthesized through hydrothermal method. When applied to benzene oxidation, the catalytic performance of Mn-doped CeO<sub>2</sub> is better than that of CeO<sub>2</sub>, due to the difference of the concentration of O vacancy. Compared to CeO<sub>2</sub> with the same morphology, more oxygen vacancies were generated on the surface of Mn-doped CeO<sub>2</sub>, due to the replacement of Ce ion with Mn ion. The lattice replacement has been analyzed through XRD, Raman, electron energy loss spectroscopy and electron paramagnetic resonance technology. The formation energies of oxygen vacancy on the different exposed crystal planes such as (110) and (100) for Mn-doped CeO<sub>2</sub> were calculated by the density functional theory (DFT). The results show that the oxygen vacancy is easier to be formed on the (110) plane. Other factors influencing catalytic behavior have also been investigated, indicating that the surface oxygen vacancy plays a crucial role in catalytic reaction.
format	article
author	Min Yang Genli Shen Qi Wang Ke Deng Mi Liu Yunfa Chen Yan Gong Zhen Wang
author_facet	Min Yang Genli Shen Qi Wang Ke Deng Mi Liu Yunfa Chen Yan Gong Zhen Wang
author_sort	Min Yang
title	Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation
title_short	Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation
title_full	Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation
title_fullStr	Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation
title_full_unstemmed	Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation
title_sort	roles of oxygen vacancies of ceo<sub>2</sub> and mn-doped ceo<sub>2</sub> with the same morphology in benzene catalytic oxidation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/322f3cd92789460796b06e48478596a8
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Roles of Oxygen Vacancies of CeO<sub>2</sub> and Mn-Doped CeO<sub>2</sub> with the Same Morphology in Benzene Catalytic Oxidation

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