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Morphology- and pH-dependent peroxidase mimetic activity of nanoceria

The peroxidase mimetic properties of nanoceria have attracted extensive attention in recent years. In this work, the peroxidase mimetic properties of CeO(2) nanocrystals with different morphologies, namely, nanocubes and nanorods, were investigated. Two types of oxidative species, HO˙ radicals and p...

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Detalles Bibliográficos
Autores principales: Wei, Xiaoshu, Li, Xiaofeng, Feng, Yuqian, Yang, Sen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079050/
https://www.ncbi.nlm.nih.gov/pubmed/35542798
http://dx.doi.org/10.1039/c8ra00622a
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author Wei, Xiaoshu
Li, Xiaofeng
Feng, Yuqian
Yang, Sen
author_facet Wei, Xiaoshu
Li, Xiaofeng
Feng, Yuqian
Yang, Sen
author_sort Wei, Xiaoshu
collection PubMed
description The peroxidase mimetic properties of nanoceria have attracted extensive attention in recent years. In this work, the peroxidase mimetic properties of CeO(2) nanocrystals with different morphologies, namely, nanocubes and nanorods, were investigated. Two types of oxidative species, HO˙ radicals and peroxide-like intermediates, were identified in the CeO(2)/H(2)O(2) systems. The formation of these oxidative species is strongly dependent on the pH value and the morphology of the CeO(2) nanocrystals. The origin of the peroxidase mimetic activity of nanoceria was mainly ascribed to the presence of HO˙ under acidic conditions, whereas the peroxide-like species also played a major role under neutral and basic conditions. CeO(2) nanorods with excellent redox properties and higher concentration of Ce(3+) and oxygen vacancies were more favorable for the generation of both HO˙ and peroxide-like intermediates than that of CeO(2) nanocubes, exhibiting excellent peroxidase mimetic activity toward 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), methylene blue (MB), and congo red (CR) in the presence of H(2)O(2).
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spelling pubmed-90790502022-05-09 Morphology- and pH-dependent peroxidase mimetic activity of nanoceria Wei, Xiaoshu Li, Xiaofeng Feng, Yuqian Yang, Sen RSC Adv Chemistry The peroxidase mimetic properties of nanoceria have attracted extensive attention in recent years. In this work, the peroxidase mimetic properties of CeO(2) nanocrystals with different morphologies, namely, nanocubes and nanorods, were investigated. Two types of oxidative species, HO˙ radicals and peroxide-like intermediates, were identified in the CeO(2)/H(2)O(2) systems. The formation of these oxidative species is strongly dependent on the pH value and the morphology of the CeO(2) nanocrystals. The origin of the peroxidase mimetic activity of nanoceria was mainly ascribed to the presence of HO˙ under acidic conditions, whereas the peroxide-like species also played a major role under neutral and basic conditions. CeO(2) nanorods with excellent redox properties and higher concentration of Ce(3+) and oxygen vacancies were more favorable for the generation of both HO˙ and peroxide-like intermediates than that of CeO(2) nanocubes, exhibiting excellent peroxidase mimetic activity toward 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), methylene blue (MB), and congo red (CR) in the presence of H(2)O(2). The Royal Society of Chemistry 2018-03-27 /pmc/articles/PMC9079050/ /pubmed/35542798 http://dx.doi.org/10.1039/c8ra00622a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wei, Xiaoshu
Li, Xiaofeng
Feng, Yuqian
Yang, Sen
Morphology- and pH-dependent peroxidase mimetic activity of nanoceria
title Morphology- and pH-dependent peroxidase mimetic activity of nanoceria
title_full Morphology- and pH-dependent peroxidase mimetic activity of nanoceria
title_fullStr Morphology- and pH-dependent peroxidase mimetic activity of nanoceria
title_full_unstemmed Morphology- and pH-dependent peroxidase mimetic activity of nanoceria
title_short Morphology- and pH-dependent peroxidase mimetic activity of nanoceria
title_sort morphology- and ph-dependent peroxidase mimetic activity of nanoceria
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079050/
https://www.ncbi.nlm.nih.gov/pubmed/35542798
http://dx.doi.org/10.1039/c8ra00622a
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AT fengyuqian morphologyandphdependentperoxidasemimeticactivityofnanoceria
AT yangsen morphologyandphdependentperoxidasemimeticactivityofnanoceria