Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates

Abstract Transition metal oxides are the potential catalysts to replace noble-metal based catalyst for the catalytic combustion of methane due to the tolerable reactivity and low cost. However, these catalysts are challenged by the low temperature reactivity. Herein, the surface defective Co3O4 nano...

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Autores principales:	Dian Gong, Gaofeng Zeng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8c32f74b80ca4cb287ffbed6bebbec32
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spelling	oai:doaj.org-article:8c32f74b80ca4cb287ffbed6bebbec322021-12-02T17:23:16ZLow-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates10.1038/s41598-021-92165-42045-2322https://doaj.org/article/8c32f74b80ca4cb287ffbed6bebbec322021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92165-4https://doaj.org/toc/2045-2322Abstract Transition metal oxides are the potential catalysts to replace noble-metal based catalyst for the catalytic combustion of methane due to the tolerable reactivity and low cost. However, these catalysts are challenged by the low temperature reactivity. Herein, the surface defective Co3O4 nanoplates are realized through a facile co-precipitation and thermal reduction method with the association of GO. The resultant catalysts (CoGO50) demonstrate a superior low-temperature reactivity for the methane oxidation to CO2 and H2O in comparison with the common Co3O4 catalyst. The reliable stability of CoGO50 catalyst was proved by 80 h testing with intermittent feeding of water vapor. The experimental analysis demonstrates that the presence of a small amount of GO significantly affects the catalysts in surface valence state, active oxygen species and surface oxygen vacancies through reacting with the cobalt oxide as a reductant. Moreover, GO plays as 2D confine template to form smaller and thinner nanoplates. This work provides a facile method to control the surface properties of catalyst not only for Co3O4 based catalysts but also for wider solid catalysts.Dian GongGaofeng ZengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dian Gong Gaofeng Zeng Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates
description	Abstract Transition metal oxides are the potential catalysts to replace noble-metal based catalyst for the catalytic combustion of methane due to the tolerable reactivity and low cost. However, these catalysts are challenged by the low temperature reactivity. Herein, the surface defective Co3O4 nanoplates are realized through a facile co-precipitation and thermal reduction method with the association of GO. The resultant catalysts (CoGO50) demonstrate a superior low-temperature reactivity for the methane oxidation to CO2 and H2O in comparison with the common Co3O4 catalyst. The reliable stability of CoGO50 catalyst was proved by 80 h testing with intermittent feeding of water vapor. The experimental analysis demonstrates that the presence of a small amount of GO significantly affects the catalysts in surface valence state, active oxygen species and surface oxygen vacancies through reacting with the cobalt oxide as a reductant. Moreover, GO plays as 2D confine template to form smaller and thinner nanoplates. This work provides a facile method to control the surface properties of catalyst not only for Co3O4 based catalysts but also for wider solid catalysts.
format	article
author	Dian Gong Gaofeng Zeng
author_facet	Dian Gong Gaofeng Zeng
author_sort	Dian Gong
title	Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates
title_short	Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates
title_full	Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates
title_fullStr	Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates
title_full_unstemmed	Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates
title_sort	low-temperature combustion of methane over graphene templated co3o4 defective-nanoplates
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8c32f74b80ca4cb287ffbed6bebbec32
work_keys_str_mv	AT diangong lowtemperaturecombustionofmethaneovergraphenetemplatedco3o4defectivenanoplates AT gaofengzeng lowtemperaturecombustionofmethaneovergraphenetemplatedco3o4defectivenanoplates
_version_	1718380981935669248

Low-temperature combustion of methane over graphene templated Co3O4 defective-nanoplates

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