Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance

The promising synergistic electrocatalytic system of phosphate (PO43−) with the mediator cobalt(II) (for short E-Co(II)-PO43−) was employed to degrade cationic dye methylene blue (MB). The exploration in the electrocatalytic process revealed that the main intermediate active oxidation products were...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Dongmei Li, Wenjie Li, Quan Zhang, Yizhi Wang, Hongyu Lin, Li Feng, Shaoxiu Li, Yue Deng, Qiurong Xiao, Jiongxi Chen, Qi Dong
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	cationic dye wastewater degradation performance e-co (ii)-po43− electrocatalytic reaction system electrocatalytic oxidation mechanism optimal reaction conditions Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/dc6bcdbdcbc743e89e6bcd71a7a3530e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:dc6bcdbdcbc743e89e6bcd71a7a3530e
record_format	dspace
spelling	oai:doaj.org-article:dc6bcdbdcbc743e89e6bcd71a7a3530e2021-11-06T10:48:00ZGeneration of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance0273-12231996-973210.2166/wst.2021.017https://doaj.org/article/dc6bcdbdcbc743e89e6bcd71a7a3530e2021-02-01T00:00:00Zhttp://wst.iwaponline.com/content/83/4/841https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The promising synergistic electrocatalytic system of phosphate (PO43−) with the mediator cobalt(II) (for short E-Co(II)-PO43−) was employed to degrade cationic dye methylene blue (MB). The exploration in the electrocatalytic process revealed that the main intermediate active oxidation products were Co(III), accompanied with hydroxyl radicals and peroxodiphosphates (P2O84−). Their synergistic electrocatalytic degradation rate to MB and total organic carbon (TOC) was up to 100 and 60% in 40 min, respectively, which was 5 times and 2.6 times that in a direct electrocatalytic system, correspondingly. The degradation process of the E-Co(II)-PO43− system on MB started with the bond being broken at the N-C junction of the MB molecule and intermediate active oxidation substances being generated, such as phenothiazine, 2-amino-5-(N-methylformamide) benzene sulfonic acid and N1,N1-dimethyl-1,4 diaminobenzene. Then, the intermediates were degraded into aniline, phenol and benzene sulfonic acid, and eventually decomposed into inorganic substances like CO2 and water. The electrocatalytic degradation mechanism of E-Co(II)-PO43− system on MB was the combination of indirect oxidation of the intermediate oxidants like Co(III), P2O84− and the hydroxyl radical with direct electrocatalysis on the platinum titanium electrode, where the electrocatalytic oxidation of Co(III) was dominant.Dongmei LiWenjie LiQuan ZhangYizhi WangHongyu LinLi FengShaoxiu LiYue DengQiurong XiaoJiongxi ChenQi DongIWA Publishingarticlecationic dye wastewaterdegradation performancee-co (ii)-po43− electrocatalytic reaction systemelectrocatalytic oxidation mechanismoptimal reaction conditionsEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 4, Pp 841-853 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cationic dye wastewater degradation performance e-co (ii)-po43− electrocatalytic reaction system electrocatalytic oxidation mechanism optimal reaction conditions Environmental technology. Sanitary engineering TD1-1066
spellingShingle	cationic dye wastewater degradation performance e-co (ii)-po43− electrocatalytic reaction system electrocatalytic oxidation mechanism optimal reaction conditions Environmental technology. Sanitary engineering TD1-1066 Dongmei Li Wenjie Li Quan Zhang Yizhi Wang Hongyu Lin Li Feng Shaoxiu Li Yue Deng Qiurong Xiao Jiongxi Chen Qi Dong Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance
description	The promising synergistic electrocatalytic system of phosphate (PO43−) with the mediator cobalt(II) (for short E-Co(II)-PO43−) was employed to degrade cationic dye methylene blue (MB). The exploration in the electrocatalytic process revealed that the main intermediate active oxidation products were Co(III), accompanied with hydroxyl radicals and peroxodiphosphates (P2O84−). Their synergistic electrocatalytic degradation rate to MB and total organic carbon (TOC) was up to 100 and 60% in 40 min, respectively, which was 5 times and 2.6 times that in a direct electrocatalytic system, correspondingly. The degradation process of the E-Co(II)-PO43− system on MB started with the bond being broken at the N-C junction of the MB molecule and intermediate active oxidation substances being generated, such as phenothiazine, 2-amino-5-(N-methylformamide) benzene sulfonic acid and N1,N1-dimethyl-1,4 diaminobenzene. Then, the intermediates were degraded into aniline, phenol and benzene sulfonic acid, and eventually decomposed into inorganic substances like CO2 and water. The electrocatalytic degradation mechanism of E-Co(II)-PO43− system on MB was the combination of indirect oxidation of the intermediate oxidants like Co(III), P2O84− and the hydroxyl radical with direct electrocatalysis on the platinum titanium electrode, where the electrocatalytic oxidation of Co(III) was dominant.
format	article
author	Dongmei Li Wenjie Li Quan Zhang Yizhi Wang Hongyu Lin Li Feng Shaoxiu Li Yue Deng Qiurong Xiao Jiongxi Chen Qi Dong
author_facet	Dongmei Li Wenjie Li Quan Zhang Yizhi Wang Hongyu Lin Li Feng Shaoxiu Li Yue Deng Qiurong Xiao Jiongxi Chen Qi Dong
author_sort	Dongmei Li
title	Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance
title_short	Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance
title_full	Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance
title_fullStr	Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance
title_full_unstemmed	Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance
title_sort	generation of active co(iii) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(ii) and its degradation performance
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/dc6bcdbdcbc743e89e6bcd71a7a3530e
work_keys_str_mv	AT dongmeili generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT wenjieli generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT quanzhang generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT yizhiwang generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT hongyulin generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT lifeng generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT shaoxiuli generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT yuedeng generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT qiurongxiao generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT jiongxichen generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance AT qidong generationofactivecoiiiandperoxodiphosphatebysynergisticelectrocatalyticsystemwithphosphateandthemediatorcobaltiianditsdegradationperformance
_version_	1718443825037312000

Generation of active Co(III) and peroxodiphosphate by synergistic electrocatalytic system with phosphate and the mediator cobalt(II) and its degradation performance

Ejemplares similares