Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants

Using the bulk g-C3N4 as a precursor, four g-C3N4 nanosheets were further prepared by ultrasonic, thermal, acid, and alkali exfoliation. The structures of these materials were characterized by various techniques such as X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning elec...

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Autores principales:	Z. Y. Yao, G. X. Zhu, T. L. Lu, Y. Z. Zhan
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	advanced oxidation process copper heterogeneous fenton catalyst synergistical catalysis g-c3n4 Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/95c47e3927bd472aa3cbd289997a50c3
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spelling	oai:doaj.org-article:95c47e3927bd472aa3cbd289997a50c32021-11-06T11:20:01ZSynergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants0273-12231996-973210.2166/wst.2021.296https://doaj.org/article/95c47e3927bd472aa3cbd289997a50c32021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/5/1090https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Using the bulk g-C3N4 as a precursor, four g-C3N4 nanosheets were further prepared by ultrasonic, thermal, acid, and alkali exfoliation. The structures of these materials were characterized by various techniques such as X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The synergistical Fenton catalysis of these materials with Cu2+ was evaluated by using rhodamine B as a simulated organic pollutant. The results showed that there existed a significant synergistical Fenton catalysis between Cu2+ and g-C3N4. This synergistic effect can be observed even when the concentration of Cu2+ was as low as 0.064 mg L−1. The properties of g-C3N4 strongly influenced the catalytic activity of the Cu2+/g-C3N4 system. The coexistent of Cu2+ and the alkali exfoliated g-C3N4 showed the best catalytic activity. Hydroxyl radicals as oxidizing species were confirmed in the Cu2+/g-C3N4 system by electron paramagnetic resonance spectra. The synergistic catalysis may be attributed to the easier reduction of Cu2+ adsorbed on the g-C3N4. This study provided an excellent Fenton catalytic system, and partly solved the rapid deactivation of heterogeneous Fenton catalysts caused by the leaching of metal ions. HIGHLIGHTS There exists a significant synergistical Fenton catalysis between trace Cu2+ and g-C3N4.; The Cu2+ concentration is lower than the maximum acceptable limit in drinking water.; This study partly solved the rapid deactivation caused by the leaching of metal ions.; This study reminds researchers to pay attention to the possible synergistic catalysis between leached ions and supports.;Z. Y. YaoG. X. ZhuT. L. LuY. Z. ZhanIWA Publishingarticleadvanced oxidation processcopperheterogeneous fenton catalystsynergistical catalysisg-c3n4Environmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 5, Pp 1090-1102 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	advanced oxidation process copper heterogeneous fenton catalyst synergistical catalysis g-c3n4 Environmental technology. Sanitary engineering TD1-1066
spellingShingle	advanced oxidation process copper heterogeneous fenton catalyst synergistical catalysis g-c3n4 Environmental technology. Sanitary engineering TD1-1066 Z. Y. Yao G. X. Zhu T. L. Lu Y. Z. Zhan Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
description	Using the bulk g-C3N4 as a precursor, four g-C3N4 nanosheets were further prepared by ultrasonic, thermal, acid, and alkali exfoliation. The structures of these materials were characterized by various techniques such as X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The synergistical Fenton catalysis of these materials with Cu2+ was evaluated by using rhodamine B as a simulated organic pollutant. The results showed that there existed a significant synergistical Fenton catalysis between Cu2+ and g-C3N4. This synergistic effect can be observed even when the concentration of Cu2+ was as low as 0.064 mg L−1. The properties of g-C3N4 strongly influenced the catalytic activity of the Cu2+/g-C3N4 system. The coexistent of Cu2+ and the alkali exfoliated g-C3N4 showed the best catalytic activity. Hydroxyl radicals as oxidizing species were confirmed in the Cu2+/g-C3N4 system by electron paramagnetic resonance spectra. The synergistic catalysis may be attributed to the easier reduction of Cu2+ adsorbed on the g-C3N4. This study provided an excellent Fenton catalytic system, and partly solved the rapid deactivation of heterogeneous Fenton catalysts caused by the leaching of metal ions. HIGHLIGHTS There exists a significant synergistical Fenton catalysis between trace Cu2+ and g-C3N4.; The Cu2+ concentration is lower than the maximum acceptable limit in drinking water.; This study partly solved the rapid deactivation caused by the leaching of metal ions.; This study reminds researchers to pay attention to the possible synergistic catalysis between leached ions and supports.;
format	article
author	Z. Y. Yao G. X. Zhu T. L. Lu Y. Z. Zhan
author_facet	Z. Y. Yao G. X. Zhu T. L. Lu Y. Z. Zhan
author_sort	Z. Y. Yao
title	Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
title_short	Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
title_full	Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
title_fullStr	Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
title_full_unstemmed	Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants
title_sort	synergistically homogeneous-heterogeneous fenton catalysis of trace copper ion and g-c3n4 for degradation of organic pollutants
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/95c47e3927bd472aa3cbd289997a50c3
work_keys_str_mv	AT zyyao synergisticallyhomogeneousheterogeneousfentoncatalysisoftracecopperionandgc3n4fordegradationoforganicpollutants AT gxzhu synergisticallyhomogeneousheterogeneousfentoncatalysisoftracecopperionandgc3n4fordegradationoforganicpollutants AT tllu synergisticallyhomogeneousheterogeneousfentoncatalysisoftracecopperionandgc3n4fordegradationoforganicpollutants AT yzzhan synergisticallyhomogeneousheterogeneousfentoncatalysisoftracecopperionandgc3n4fordegradationoforganicpollutants
_version_	1718443747588440064

Synergistically homogeneous-heterogeneous Fenton catalysis of trace copper ion and g-C3N4 for degradation of organic pollutants

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