Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes

A whole series of titania nanocomposites modified with reduced graphene oxide (rGO) was prepared using solvothermal method followed by calcination. Modification of titania with rGO has been found to lead to better photocatalytic properties. The highest photocatalytic performance was obtained at calc...

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Autores principales:	Guskos Niko, Zolnierkiewicz Grzegorz, Guskos Aleksander, Aidinis Konstantinos, Wanag Agnieszka, Kusiak-Nejman Ewelina, Narkiewicz Urszula, Morawski Antoni W.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	magnetic oxygen defects and ferromagnetic ordering systems titania nanocomposites modified with reduced graphene oxide (rgo) electron paramagnetic resonance/ferromagnetic resonance Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/f480cc13c4fa40e58bf124a4a3b4ab72
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spelling	oai:doaj.org-article:f480cc13c4fa40e58bf124a4a3b4ab722021-12-05T14:11:02ZMagnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes1605-812710.1515/rams-2021-0012https://doaj.org/article/f480cc13c4fa40e58bf124a4a3b4ab722021-01-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0012https://doaj.org/toc/1605-8127A whole series of titania nanocomposites modified with reduced graphene oxide (rGO) was prepared using solvothermal method followed by calcination. Modification of titania with rGO has been found to lead to better photocatalytic properties. The highest photocatalytic performance was obtained at calcination temperature of 600°C. Electron paramagnetic resonance/ferromagnetic resonance measurements showed oxygen defects and ferromagnetic ordering systems. The linewidth of resonance line of oxygen defects decreased linearly with calcination temperature increasing up to 600°C and an accompanying growth of mean crystallite size of anatase phase. The integrated resonance line intensity of oxygen defects depended on the calcination temperature and caused a very large increase in the intensity of resonance lines originating from oxygen defects, because inert atmosphere of calcination was enhanced by graphene presence. The occurrence of magnetic ordering system significantly influenced the performance of photocatalytic processes by changing the amount of oxygen defects.Guskos NikoZolnierkiewicz GrzegorzGuskos AleksanderAidinis KonstantinosWanag AgnieszkaKusiak-Nejman EwelinaNarkiewicz UrszulaMorawski Antoni W.De Gruyterarticlemagnetic oxygen defects and ferromagnetic ordering systemstitania nanocomposites modified with reduced graphene oxide (rgo)electron paramagnetic resonance/ferromagnetic resonanceTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 57-63 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	magnetic oxygen defects and ferromagnetic ordering systems titania nanocomposites modified with reduced graphene oxide (rgo) electron paramagnetic resonance/ferromagnetic resonance Technology T Chemical technology TP1-1185
spellingShingle	magnetic oxygen defects and ferromagnetic ordering systems titania nanocomposites modified with reduced graphene oxide (rgo) electron paramagnetic resonance/ferromagnetic resonance Technology T Chemical technology TP1-1185 Guskos Niko Zolnierkiewicz Grzegorz Guskos Aleksander Aidinis Konstantinos Wanag Agnieszka Kusiak-Nejman Ewelina Narkiewicz Urszula Morawski Antoni W. Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
description	A whole series of titania nanocomposites modified with reduced graphene oxide (rGO) was prepared using solvothermal method followed by calcination. Modification of titania with rGO has been found to lead to better photocatalytic properties. The highest photocatalytic performance was obtained at calcination temperature of 600°C. Electron paramagnetic resonance/ferromagnetic resonance measurements showed oxygen defects and ferromagnetic ordering systems. The linewidth of resonance line of oxygen defects decreased linearly with calcination temperature increasing up to 600°C and an accompanying growth of mean crystallite size of anatase phase. The integrated resonance line intensity of oxygen defects depended on the calcination temperature and caused a very large increase in the intensity of resonance lines originating from oxygen defects, because inert atmosphere of calcination was enhanced by graphene presence. The occurrence of magnetic ordering system significantly influenced the performance of photocatalytic processes by changing the amount of oxygen defects.
format	article
author	Guskos Niko Zolnierkiewicz Grzegorz Guskos Aleksander Aidinis Konstantinos Wanag Agnieszka Kusiak-Nejman Ewelina Narkiewicz Urszula Morawski Antoni W.
author_facet	Guskos Niko Zolnierkiewicz Grzegorz Guskos Aleksander Aidinis Konstantinos Wanag Agnieszka Kusiak-Nejman Ewelina Narkiewicz Urszula Morawski Antoni W.
author_sort	Guskos Niko
title	Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
title_short	Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
title_full	Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
title_fullStr	Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
title_full_unstemmed	Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
title_sort	magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/f480cc13c4fa40e58bf124a4a3b4ab72
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Magnetic moment centers in titanium dioxide photocatalysts loaded on reduced graphene oxide flakes

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