Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid

Persulfate oxidation technology is widely used in wastewater treatment, but there are still many disadvantages, such as high energy consumption, side reaction and narrow pH applicability. Copper oxides can activate persulfate steadily with higher efficiency. In this paper, a novel preparation method...

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Autores principales:	Jialei Huang, Yan Luo
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	cuprous oxide nanoparticles diclofenac in situ chemical oxidation ionic liquid persulfate activation mechanism water treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/4c6319f2ddb44837aa82e8745883e163
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spelling	oai:doaj.org-article:4c6319f2ddb44837aa82e8745883e1632021-11-06T11:26:12ZDiclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid0273-12231996-973210.2166/wst.2021.369https://doaj.org/article/4c6319f2ddb44837aa82e8745883e1632021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/8/1930https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Persulfate oxidation technology is widely used in wastewater treatment, but there are still many disadvantages, such as high energy consumption, side reaction and narrow pH applicability. Copper oxides can activate persulfate steadily with higher efficiency. In this paper, a novel preparation method of shape-controlled cuprous oxide (Cu2O) nanoparticles featured with high catalytic performance was explored. It was found that adding ionic liquid 1-butyl-3-methylimidazolium bromide ([BMIM]Br) during preparation of Cu2O can improve the degradation rate of diclofenac (DCF). Cu2O nanoparticles possess good stability in consecutive cycling tests, which was confirmed by X-ray photoelectron spectroscopy. The possible mechanism of Cu2O activating persulfate at different initial pH conditions was discussed based on electron paramagnetic resonance spin-trapping experiment. It was found that DCF was efficiently degraded in the Cu2O/peroxydisulfate (PDS) system within a broad pH range from 5 to 11. It proved via a quenching experiment that the activation process of PDS mainly occurs on the surface layer of Cu2O nanoparticles. As a result, shape-controlled Cu2O nanoparticles prepared by ionic liquid are expected to be used for in situ chemical oxidation, which is an effective oxidation processes to degrade DCF remaining in surface water and ground water. HIGHLIGHTS This study provides a novel preparation method of shape-controlled cuprous oxide (Cu2O) particles featured with high catalytic performance to degrade diclofenac (DCF).; It overcomes the disadvantages of degradation of organic pollutants by the traditional Fe in situ chemical oxidation system to some extent, such as being unrecyclable and having a narrow application range of pH value.;Jialei HuangYan LuoIWA Publishingarticlecuprous oxide nanoparticlesdiclofenacin situ chemical oxidationionic liquidpersulfate activation mechanismwater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 8, Pp 1930-1942 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cuprous oxide nanoparticles diclofenac in situ chemical oxidation ionic liquid persulfate activation mechanism water treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	cuprous oxide nanoparticles diclofenac in situ chemical oxidation ionic liquid persulfate activation mechanism water treatment Environmental technology. Sanitary engineering TD1-1066 Jialei Huang Yan Luo Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
description	Persulfate oxidation technology is widely used in wastewater treatment, but there are still many disadvantages, such as high energy consumption, side reaction and narrow pH applicability. Copper oxides can activate persulfate steadily with higher efficiency. In this paper, a novel preparation method of shape-controlled cuprous oxide (Cu2O) nanoparticles featured with high catalytic performance was explored. It was found that adding ionic liquid 1-butyl-3-methylimidazolium bromide ([BMIM]Br) during preparation of Cu2O can improve the degradation rate of diclofenac (DCF). Cu2O nanoparticles possess good stability in consecutive cycling tests, which was confirmed by X-ray photoelectron spectroscopy. The possible mechanism of Cu2O activating persulfate at different initial pH conditions was discussed based on electron paramagnetic resonance spin-trapping experiment. It was found that DCF was efficiently degraded in the Cu2O/peroxydisulfate (PDS) system within a broad pH range from 5 to 11. It proved via a quenching experiment that the activation process of PDS mainly occurs on the surface layer of Cu2O nanoparticles. As a result, shape-controlled Cu2O nanoparticles prepared by ionic liquid are expected to be used for in situ chemical oxidation, which is an effective oxidation processes to degrade DCF remaining in surface water and ground water. HIGHLIGHTS This study provides a novel preparation method of shape-controlled cuprous oxide (Cu2O) particles featured with high catalytic performance to degrade diclofenac (DCF).; It overcomes the disadvantages of degradation of organic pollutants by the traditional Fe in situ chemical oxidation system to some extent, such as being unrecyclable and having a narrow application range of pH value.;
format	article
author	Jialei Huang Yan Luo
author_facet	Jialei Huang Yan Luo
author_sort	Jialei Huang
title	Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
title_short	Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
title_full	Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
title_fullStr	Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
title_full_unstemmed	Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
title_sort	diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/4c6319f2ddb44837aa82e8745883e163
work_keys_str_mv	AT jialeihuang diclofenacdegradationbasedonshapecontrolledcuprousoxidenanoparticlespreparedbyusingionicliquid AT yanluo diclofenacdegradationbasedonshapecontrolledcuprousoxidenanoparticlespreparedbyusingionicliquid
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Diclofenac degradation based on shape-controlled cuprous oxide nanoparticles prepared by using ionic liquid

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