Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride

A novel copper doped graphitic carbon nitride (Cu-C3N4) was successfully synthesized and used as an effective Fenton-like catalyst. Cu-C3N4 was characterized by scanning electron microscopy, surface area analyzer, Fourier transform infrared spectroscopy, X-ray diffractometer, and X-ray photoelectron...

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Autores principales:	Chongqing Wang, Rong Huang, Ruirui Sun, Hui Wang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	copper doping dye degradation fenton-like reaction graphitic carbon nitride hydroxyl radical Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/e56b81782dff4bb1a3982ee527217b76
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spelling	oai:doaj.org-article:e56b81782dff4bb1a3982ee527217b762021-11-06T11:20:08ZUltrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride0273-12231996-973210.2166/wst.2021.286https://doaj.org/article/e56b81782dff4bb1a3982ee527217b762021-09-01T00:00:00Zhttp://wst.iwaponline.com/content/84/5/1146https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732A novel copper doped graphitic carbon nitride (Cu-C3N4) was successfully synthesized and used as an effective Fenton-like catalyst. Cu-C3N4 was characterized by scanning electron microscopy, surface area analyzer, Fourier transform infrared spectroscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy. Effect of process parameters including catalyst dosage, hydrogen peroxide (H2O2) concentration, solution pH, and initial methylene blue (MB) concentration was investigated to evaluate catalytic performance. The pseudo first-order kinetic model was used to describe the catalytic process. The enhancement of MB degradation is observed assisted by ultrasound. MB degradation of 96% is obtained within 30 min in Cu-C3N4/H2O2/ultrasound system, and the corresponding rate constant is 0.099 min−1. Effective MB degradation is obtained over a broad pH range (3.3–9.9). The catalytic mechanism is examined by ultraviolet-visible spectra, quenching test, and electron spin resonance determination. The dominant mechanism of MB degradation is ascribed to the ultrasonic H2O2 activation by Cu-C3N4 for hydroxyl radical generation. Cu-C3N4 has good reusability and is effective to degrade rhodamine B and acid orange 7. This work not only contributes to the field of wastewater treatment, but also provides insights into the synthesis of Fenton-like catalysts. The results manifest that Cu-C3N4 is a promising Fenton-like catalyst for dye degradation in the field of environmental pollution remediation. HIGHLIGHTS A novel Cu doped g-C3N4 is easily synthesized.; Cu species uniformly doped on porous g-C3N4 contribute to catalytic ability.; Ultrasound significantly improves MB degradation in the presence of Cu-C3N4/H2O2.; MB degradation is effectively obtained in a broad pH range.; Plausible mechanism of H2O2 activation for •OH generation is revealed for MB degradation.;Chongqing WangRong HuangRuirui SunHui WangIWA Publishingarticlecopper dopingdye degradationfenton-like reactiongraphitic carbon nitridehydroxyl radicalEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 5, Pp 1146-1158 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	copper doping dye degradation fenton-like reaction graphitic carbon nitride hydroxyl radical Environmental technology. Sanitary engineering TD1-1066
spellingShingle	copper doping dye degradation fenton-like reaction graphitic carbon nitride hydroxyl radical Environmental technology. Sanitary engineering TD1-1066 Chongqing Wang Rong Huang Ruirui Sun Hui Wang Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride
description	A novel copper doped graphitic carbon nitride (Cu-C3N4) was successfully synthesized and used as an effective Fenton-like catalyst. Cu-C3N4 was characterized by scanning electron microscopy, surface area analyzer, Fourier transform infrared spectroscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy. Effect of process parameters including catalyst dosage, hydrogen peroxide (H2O2) concentration, solution pH, and initial methylene blue (MB) concentration was investigated to evaluate catalytic performance. The pseudo first-order kinetic model was used to describe the catalytic process. The enhancement of MB degradation is observed assisted by ultrasound. MB degradation of 96% is obtained within 30 min in Cu-C3N4/H2O2/ultrasound system, and the corresponding rate constant is 0.099 min−1. Effective MB degradation is obtained over a broad pH range (3.3–9.9). The catalytic mechanism is examined by ultraviolet-visible spectra, quenching test, and electron spin resonance determination. The dominant mechanism of MB degradation is ascribed to the ultrasonic H2O2 activation by Cu-C3N4 for hydroxyl radical generation. Cu-C3N4 has good reusability and is effective to degrade rhodamine B and acid orange 7. This work not only contributes to the field of wastewater treatment, but also provides insights into the synthesis of Fenton-like catalysts. The results manifest that Cu-C3N4 is a promising Fenton-like catalyst for dye degradation in the field of environmental pollution remediation. HIGHLIGHTS A novel Cu doped g-C3N4 is easily synthesized.; Cu species uniformly doped on porous g-C3N4 contribute to catalytic ability.; Ultrasound significantly improves MB degradation in the presence of Cu-C3N4/H2O2.; MB degradation is effectively obtained in a broad pH range.; Plausible mechanism of H2O2 activation for •OH generation is revealed for MB degradation.;
format	article
author	Chongqing Wang Rong Huang Ruirui Sun Hui Wang
author_facet	Chongqing Wang Rong Huang Ruirui Sun Hui Wang
author_sort	Chongqing Wang
title	Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride
title_short	Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride
title_full	Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride
title_fullStr	Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride
title_full_unstemmed	Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride
title_sort	ultrasound assisted fenton-like degradation of dyes using copper doped graphitic carbon nitride
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e56b81782dff4bb1a3982ee527217b76
work_keys_str_mv	AT chongqingwang ultrasoundassistedfentonlikedegradationofdyesusingcopperdopedgraphiticcarbonnitride AT ronghuang ultrasoundassistedfentonlikedegradationofdyesusingcopperdopedgraphiticcarbonnitride AT ruiruisun ultrasoundassistedfentonlikedegradationofdyesusingcopperdopedgraphiticcarbonnitride AT huiwang ultrasoundassistedfentonlikedegradationofdyesusingcopperdopedgraphiticcarbonnitride
_version_	1718443765728804864

Ultrasound assisted Fenton-like degradation of dyes using copper doped graphitic carbon nitride

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