Strong Pyro-Electro-Chemical Coupling of Elbaite/H2O2 System for Pyrocatalysis Dye Wastewater

Elbaite is a natural silicate mineral with a spontaneous electric field. In the current study, it was selected as a pyroelectric catalyst to promote hydrogen peroxide (H2O2) for dye decomposition due to its pyro-electro-chemical coupling. The behaviors a...

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Autores principales:	Fei Chen, Jiesen Guo, Dezhong Meng, Yuetong Wu, Ruijin Sun, Changchun Zhao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	tourmaline elbaite/H<sub>2</sub>O<sub>2</sub> system pyroelectric catalyst dye wastewater RhB degradation Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/e339c40f60ca4559abec66cd70d2deed
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spelling	oai:doaj.org-article:e339c40f60ca4559abec66cd70d2deed2021-11-25T17:06:25ZStrong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater10.3390/catal111113702073-4344https://doaj.org/article/e339c40f60ca4559abec66cd70d2deed2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4344/11/11/1370https://doaj.org/toc/2073-4344Elbaite is a natural silicate mineral with a spontaneous electric field. In the current study, it was selected as a pyroelectric catalyst to promote hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) for dye decomposition due to its pyro-electro-chemical coupling. The behaviors and efficiency of the elbaite/H<sub>2</sub>O<sub>2</sub> system in rhodamine B (RhB) degradation were systematically investigated. The results indicate that the optimal effective degradability of RhB reaches 100.0% at 4.0 g/L elbaite, 7.0 mL/L H<sub>2</sub>O<sub>2</sub>, and pH = 2.0 in the elbaite/H<sub>2</sub>O<sub>2</sub> system. The elbaite/H<sub>2</sub>O<sub>2</sub> system exhibits high recyclability and stability after recycling three times, reaching 94.5% of the degradation rate. The mechanisms of RhB degradation clarified that the hydroxyl radical (·OH) is the main active specie involved in catalytic degradation in the elbaite/H<sub>2</sub>O<sub>2</sub> system. Moreover, not only does elbaite act as a pyroelectric catalyst to activate H<sub>2</sub>O<sub>2</sub> in order to generate the primary ·OH for subsequent advanced oxidation reactions, but it also has the role of a dye sorbent. The elbaite/H<sub>2</sub>O<sub>2</sub> system shows excellent application potential for the degradation of RhB.Fei ChenJiesen GuoDezhong MengYuetong WuRuijin SunChangchun ZhaoMDPI AGarticletourmalineelbaite/H<sub>2</sub>O<sub>2</sub> systempyroelectric catalystdye wastewaterRhB degradationChemical technologyTP1-1185ChemistryQD1-999ENCatalysts, Vol 11, Iss 1370, p 1370 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tourmaline elbaite/H<sub>2</sub>O<sub>2</sub> system pyroelectric catalyst dye wastewater RhB degradation Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	tourmaline elbaite/H<sub>2</sub>O<sub>2</sub> system pyroelectric catalyst dye wastewater RhB degradation Chemical technology TP1-1185 Chemistry QD1-999 Fei Chen Jiesen Guo Dezhong Meng Yuetong Wu Ruijin Sun Changchun Zhao Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater
description	Elbaite is a natural silicate mineral with a spontaneous electric field. In the current study, it was selected as a pyroelectric catalyst to promote hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) for dye decomposition due to its pyro-electro-chemical coupling. The behaviors and efficiency of the elbaite/H<sub>2</sub>O<sub>2</sub> system in rhodamine B (RhB) degradation were systematically investigated. The results indicate that the optimal effective degradability of RhB reaches 100.0% at 4.0 g/L elbaite, 7.0 mL/L H<sub>2</sub>O<sub>2</sub>, and pH = 2.0 in the elbaite/H<sub>2</sub>O<sub>2</sub> system. The elbaite/H<sub>2</sub>O<sub>2</sub> system exhibits high recyclability and stability after recycling three times, reaching 94.5% of the degradation rate. The mechanisms of RhB degradation clarified that the hydroxyl radical (·OH) is the main active specie involved in catalytic degradation in the elbaite/H<sub>2</sub>O<sub>2</sub> system. Moreover, not only does elbaite act as a pyroelectric catalyst to activate H<sub>2</sub>O<sub>2</sub> in order to generate the primary ·OH for subsequent advanced oxidation reactions, but it also has the role of a dye sorbent. The elbaite/H<sub>2</sub>O<sub>2</sub> system shows excellent application potential for the degradation of RhB.
format	article
author	Fei Chen Jiesen Guo Dezhong Meng Yuetong Wu Ruijin Sun Changchun Zhao
author_facet	Fei Chen Jiesen Guo Dezhong Meng Yuetong Wu Ruijin Sun Changchun Zhao
author_sort	Fei Chen
title	Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater
title_short	Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater
title_full	Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater
title_fullStr	Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater
title_full_unstemmed	Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater
title_sort	strong pyro-electro-chemical coupling of elbaite/h<sub>2</sub>o<sub>2</sub> system for pyrocatalysis dye wastewater
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e339c40f60ca4559abec66cd70d2deed
work_keys_str_mv	AT feichen strongpyroelectrochemicalcouplingofelbaitehsub2subosub2subsystemforpyrocatalysisdyewastewater AT jiesenguo strongpyroelectrochemicalcouplingofelbaitehsub2subosub2subsystemforpyrocatalysisdyewastewater AT dezhongmeng strongpyroelectrochemicalcouplingofelbaitehsub2subosub2subsystemforpyrocatalysisdyewastewater AT yuetongwu strongpyroelectrochemicalcouplingofelbaitehsub2subosub2subsystemforpyrocatalysisdyewastewater AT ruijinsun strongpyroelectrochemicalcouplingofelbaitehsub2subosub2subsystemforpyrocatalysisdyewastewater AT changchunzhao strongpyroelectrochemicalcouplingofelbaitehsub2subosub2subsystemforpyrocatalysisdyewastewater
_version_	1718412747303026688

Strong Pyro-Electro-Chemical Coupling of Elbaite/H<sub>2</sub>O<sub>2</sub> System for Pyrocatalysis Dye Wastewater

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