Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation

In this study, we fabricated a micro-nano structured Fe2O3@FeB composites by treating commercial Fe2O3 with sodium borohydride. The outside amorphous FeB alloy shell endowed the Fe2O3@FeB with remarkable Fenton-like performance in organic pollutants oxidation by efficient Fe(III)/Fe(II) cycle. For i...

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Autores principales:	Kai Wei, Xiufan Liu, Shiyu Cao, Huijuan Cui, Yu Zhang, Zhihui Ai
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Fe2O3@FeB Fenton-like performance Fe(III)/Fe(II) cycle Molecular oxygen activation Additional H2O2 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/3bc5387bc9b6420385bf391171cae8e7
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spelling	oai:doaj.org-article:3bc5387bc9b6420385bf391171cae8e72021-11-18T04:52:58ZFe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation2666-821110.1016/j.ceja.2021.100165https://doaj.org/article/3bc5387bc9b6420385bf391171cae8e72021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666821121000818https://doaj.org/toc/2666-8211In this study, we fabricated a micro-nano structured Fe2O3@FeB composites by treating commercial Fe2O3 with sodium borohydride. The outside amorphous FeB alloy shell endowed the Fe2O3@FeB with remarkable Fenton-like performance in organic pollutants oxidation by efficient Fe(III)/Fe(II) cycle. For instance, the pseudo first-order rate constants of RhB degradation using Fe2O3@FeB as Fenton reagent was 74.6 times that of the Fe2O3 counterpart, the hydroxyl radical generation rate of Fe2O3@FeB was 1-3 orders of magnitude larger than that of other heterogeneous Fenton reagent. Further mechanistic study unveiled that FeB was oxidized accompanying with Fe(0) and B(0) continuously donated electrons to Fe(III) to secure the efficient generation of surface Fe(II), which could generate additional H2O2 by consecutive single-electron molecular oxygen activation (O2→•O2−→H2O2), leading to enhance •OH production and Fenton-degradation toward typical pollutants. This study provides a facile route for efficient heterogeneous Fenton and strengthens the vital role of molecular oxygen activation on Fenton-like process.Kai WeiXiufan LiuShiyu CaoHuijuan CuiYu ZhangZhihui AiElsevierarticleFe2O3@FeBFenton-like performanceFe(III)/Fe(II) cycleMolecular oxygen activationAdditional H2O2Chemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 8, Iss , Pp 100165- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fe2O3@FeB Fenton-like performance Fe(III)/Fe(II) cycle Molecular oxygen activation Additional H2O2 Chemical engineering TP155-156
spellingShingle	Fe2O3@FeB Fenton-like performance Fe(III)/Fe(II) cycle Molecular oxygen activation Additional H2O2 Chemical engineering TP155-156 Kai Wei Xiufan Liu Shiyu Cao Huijuan Cui Yu Zhang Zhihui Ai Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation
description	In this study, we fabricated a micro-nano structured Fe2O3@FeB composites by treating commercial Fe2O3 with sodium borohydride. The outside amorphous FeB alloy shell endowed the Fe2O3@FeB with remarkable Fenton-like performance in organic pollutants oxidation by efficient Fe(III)/Fe(II) cycle. For instance, the pseudo first-order rate constants of RhB degradation using Fe2O3@FeB as Fenton reagent was 74.6 times that of the Fe2O3 counterpart, the hydroxyl radical generation rate of Fe2O3@FeB was 1-3 orders of magnitude larger than that of other heterogeneous Fenton reagent. Further mechanistic study unveiled that FeB was oxidized accompanying with Fe(0) and B(0) continuously donated electrons to Fe(III) to secure the efficient generation of surface Fe(II), which could generate additional H2O2 by consecutive single-electron molecular oxygen activation (O2→•O2−→H2O2), leading to enhance •OH production and Fenton-degradation toward typical pollutants. This study provides a facile route for efficient heterogeneous Fenton and strengthens the vital role of molecular oxygen activation on Fenton-like process.
format	article
author	Kai Wei Xiufan Liu Shiyu Cao Huijuan Cui Yu Zhang Zhihui Ai
author_facet	Kai Wei Xiufan Liu Shiyu Cao Huijuan Cui Yu Zhang Zhihui Ai
author_sort	Kai Wei
title	Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation
title_short	Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation
title_full	Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation
title_fullStr	Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation
title_full_unstemmed	Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation
title_sort	fe2o3@feb composites facilitate heterogeneous fenton process by efficient fe(iii)/fe(ii) cycle and in-situ h2o2 generation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/3bc5387bc9b6420385bf391171cae8e7
work_keys_str_mv	AT kaiwei fe2o3febcompositesfacilitateheterogeneousfentonprocessbyefficientfeiiifeiicycleandinsituh2o2generation AT xiufanliu fe2o3febcompositesfacilitateheterogeneousfentonprocessbyefficientfeiiifeiicycleandinsituh2o2generation AT shiyucao fe2o3febcompositesfacilitateheterogeneousfentonprocessbyefficientfeiiifeiicycleandinsituh2o2generation AT huijuancui fe2o3febcompositesfacilitateheterogeneousfentonprocessbyefficientfeiiifeiicycleandinsituh2o2generation AT yuzhang fe2o3febcompositesfacilitateheterogeneousfentonprocessbyefficientfeiiifeiicycleandinsituh2o2generation AT zhihuiai fe2o3febcompositesfacilitateheterogeneousfentonprocessbyefficientfeiiifeiicycleandinsituh2o2generation
_version_	1718424967879589888

Fe2O3@FeB composites facilitate heterogeneous Fenton process by efficient Fe(III)/Fe(II) cycle and in-situ H2O2 generation

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