The behavior of ozone on different iron oxides surface sites in water

Abstract A transformation process of ozone on different iron oxides suspensions, including α-Fe2O3, α-FeOOH, Fe3O4, was carried out using FTIR of adsorbed pyridine, ATR-FTIR and electron paramagnetic resonance (EPR) spectra with isotope 18O3. It was verified that on the surface isolated hydroxyl gro...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Liqiang Yan, Jishuai Bing, Hecheng Wu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/944bf24d7b614199873d94237110c62a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:944bf24d7b614199873d94237110c62a
record_format	dspace
spelling	oai:doaj.org-article:944bf24d7b614199873d94237110c62a2021-12-02T15:09:57ZThe behavior of ozone on different iron oxides surface sites in water10.1038/s41598-019-50910-w2045-2322https://doaj.org/article/944bf24d7b614199873d94237110c62a2019-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-50910-whttps://doaj.org/toc/2045-2322Abstract A transformation process of ozone on different iron oxides suspensions, including α-Fe2O3, α-FeOOH, Fe3O4, was carried out using FTIR of adsorbed pyridine, ATR-FTIR and electron paramagnetic resonance (EPR) spectra with isotope 18O3. It was verified that on the surface isolated hydroxyl groups and the surface hydroxyl groups without acid sites of these iron oxides, ozone was electrostatically adsorbed and did not interact with the surface of these oxides, stably existed as ozone molecule. In contrast, ozone could replace the surface hydroxyl groups on Lewis acid sites of oxides, and directly interacted with the surface metal ions, decomposing into reactive oxygen species (ROS) and initiating the surface metal redox. The results indicate that Lewis acid sites were active center while the electronic cycle of the Fe2+/Fe3+ is advantageous to promote ozone decomposition into O2 •− and •OH radicals. The mechanism of catalytic ozonation in different surface acid sites of iron oxides aqueous suspension was proposed on the basis of all experimental information.Liqiang YanJishuai BingHecheng WuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Liqiang Yan Jishuai Bing Hecheng Wu The behavior of ozone on different iron oxides surface sites in water
description	Abstract A transformation process of ozone on different iron oxides suspensions, including α-Fe2O3, α-FeOOH, Fe3O4, was carried out using FTIR of adsorbed pyridine, ATR-FTIR and electron paramagnetic resonance (EPR) spectra with isotope 18O3. It was verified that on the surface isolated hydroxyl groups and the surface hydroxyl groups without acid sites of these iron oxides, ozone was electrostatically adsorbed and did not interact with the surface of these oxides, stably existed as ozone molecule. In contrast, ozone could replace the surface hydroxyl groups on Lewis acid sites of oxides, and directly interacted with the surface metal ions, decomposing into reactive oxygen species (ROS) and initiating the surface metal redox. The results indicate that Lewis acid sites were active center while the electronic cycle of the Fe2+/Fe3+ is advantageous to promote ozone decomposition into O2 •− and •OH radicals. The mechanism of catalytic ozonation in different surface acid sites of iron oxides aqueous suspension was proposed on the basis of all experimental information.
format	article
author	Liqiang Yan Jishuai Bing Hecheng Wu
author_facet	Liqiang Yan Jishuai Bing Hecheng Wu
author_sort	Liqiang Yan
title	The behavior of ozone on different iron oxides surface sites in water
title_short	The behavior of ozone on different iron oxides surface sites in water
title_full	The behavior of ozone on different iron oxides surface sites in water
title_fullStr	The behavior of ozone on different iron oxides surface sites in water
title_full_unstemmed	The behavior of ozone on different iron oxides surface sites in water
title_sort	behavior of ozone on different iron oxides surface sites in water
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/944bf24d7b614199873d94237110c62a
work_keys_str_mv	AT liqiangyan thebehaviorofozoneondifferentironoxidessurfacesitesinwater AT jishuaibing thebehaviorofozoneondifferentironoxidessurfacesitesinwater AT hechengwu thebehaviorofozoneondifferentironoxidessurfacesitesinwater AT liqiangyan behaviorofozoneondifferentironoxidessurfacesitesinwater AT jishuaibing behaviorofozoneondifferentironoxidessurfacesitesinwater AT hechengwu behaviorofozoneondifferentironoxidessurfacesitesinwater
_version_	1718387766646013952

The behavior of ozone on different iron oxides surface sites in water

Ejemplares similares