Functioned catalysts with magnetic core applied in ibuprofen degradation

In the present work, the performance of Ag/ZnO/CoFe2O4 magnetic photocatalysts in the photocatalytic degradation of ibuprofen (IBP) was evaluated. This study considered the use of pure Ag/ZnO (5% Ag) and also the use of the Ag/ZnO/CoFe2O4 magnetic catalysts containing different amounts (5, 10 and 15...

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Autores principales:	Giane Gonçalves Lenzi, Mylena Ferreira Lopes, Dana Isabelly Andrade, José Salvador Napoli, Andrieli Parolin, Yuri Barros Fávaro, Maria Eduarda Kounaris Fuziki, Lariana Negrão Beraldo de Almeida, Tatiana Gulminie Josué, Daniele Toniolo Dias, Angelo Marcelo Tusset
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	ag/zno/cofe2o4 photocatalysts drugs degradation heterogeneous photocatalysis magnetic separation Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/92de7fee3f614674800952d85a27db84
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spelling	oai:doaj.org-article:92de7fee3f614674800952d85a27db842021-11-23T18:40:45ZFunctioned catalysts with magnetic core applied in ibuprofen degradation0273-12231996-973210.2166/wst.2021.409https://doaj.org/article/92de7fee3f614674800952d85a27db842021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/9/2158https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732In the present work, the performance of Ag/ZnO/CoFe2O4 magnetic photocatalysts in the photocatalytic degradation of ibuprofen (IBP) was evaluated. This study considered the use of pure Ag/ZnO (5% Ag) and also the use of the Ag/ZnO/CoFe2O4 magnetic catalysts containing different amounts (5, 10 and 15% wt) of cobalt ferrite (CoFe2O4). The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoacoustic spectroscopy. To carry out the photocatalytic degradation reaction, different concentrations of the ibuprofen contaminant solution (10, 20 and 30 ppm) and different concentrations of photocatalyst were tested (0.3 g L−1, 0.5 g L−1 and 1.0 g L−1). The reaction parameters studied were: IBP concentration, catalyst concentration, adsorption and photolysis, influence of the matrix, radiation source (solar and artificial) and the effect of organic additive. At the end of the photocatalytic tests, the best operating conditions were defined. Considering the obtained results of degradation efficiency and magnetic separation, the optimal parameters selected to proceed with the other tests of the study were: ibuprofen solution concentration 10 ppm, Ag/ZnO/CoFe2O4 (5%) catalyst at a concentration of 0.3 g L−1 and pH 4.5 of the reaction medium. The results indicated the feasibility of magnetic separation of the synthesized catalysts. A long duration test indicated that the catalyst exhibits stability throughout the degradation reaction, as more than 80% of IBP was degraded after 300 minutes. The photocatalytic activity was directly affected by the ferrite load. The higher the nominal load of ferrite, the lower the performance in IBP degradation. It was also observed that the smallest amount of ferrite studied was enough for the catalyst to be recovered and reused. The adsorption and photolysis tests did not show significant results in the IBP degradation. In addition, it was possible to verify that the aqueous matrix, the use of solar radiation and the addition of additive (acid formic) were interfered directly in the process. The catalyst reuse tests indicated that it can be recovered and reused at least three times without considerable catalytic activity loss. HIGHLIGHTS Ag/ZnO/CoFe2O4 magnetic photocatalysts.; Magnetic separation.; Influence of the matrix, radiation source and presence of additive in ibuprofen degradation.;Giane Gonçalves LenziMylena Ferreira LopesDana Isabelly AndradeJosé Salvador NapoliAndrieli ParolinYuri Barros FávaroMaria Eduarda Kounaris FuzikiLariana Negrão Beraldo de AlmeidaTatiana Gulminie JosuéDaniele Toniolo DiasAngelo Marcelo TussetIWA Publishingarticleag/zno/cofe2o4 photocatalystsdrugs degradationheterogeneous photocatalysismagnetic separationEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 9, Pp 2158-2179 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ag/zno/cofe2o4 photocatalysts drugs degradation heterogeneous photocatalysis magnetic separation Environmental technology. Sanitary engineering TD1-1066
spellingShingle	ag/zno/cofe2o4 photocatalysts drugs degradation heterogeneous photocatalysis magnetic separation Environmental technology. Sanitary engineering TD1-1066 Giane Gonçalves Lenzi Mylena Ferreira Lopes Dana Isabelly Andrade José Salvador Napoli Andrieli Parolin Yuri Barros Fávaro Maria Eduarda Kounaris Fuziki Lariana Negrão Beraldo de Almeida Tatiana Gulminie Josué Daniele Toniolo Dias Angelo Marcelo Tusset Functioned catalysts with magnetic core applied in ibuprofen degradation
description	In the present work, the performance of Ag/ZnO/CoFe2O4 magnetic photocatalysts in the photocatalytic degradation of ibuprofen (IBP) was evaluated. This study considered the use of pure Ag/ZnO (5% Ag) and also the use of the Ag/ZnO/CoFe2O4 magnetic catalysts containing different amounts (5, 10 and 15% wt) of cobalt ferrite (CoFe2O4). The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoacoustic spectroscopy. To carry out the photocatalytic degradation reaction, different concentrations of the ibuprofen contaminant solution (10, 20 and 30 ppm) and different concentrations of photocatalyst were tested (0.3 g L−1, 0.5 g L−1 and 1.0 g L−1). The reaction parameters studied were: IBP concentration, catalyst concentration, adsorption and photolysis, influence of the matrix, radiation source (solar and artificial) and the effect of organic additive. At the end of the photocatalytic tests, the best operating conditions were defined. Considering the obtained results of degradation efficiency and magnetic separation, the optimal parameters selected to proceed with the other tests of the study were: ibuprofen solution concentration 10 ppm, Ag/ZnO/CoFe2O4 (5%) catalyst at a concentration of 0.3 g L−1 and pH 4.5 of the reaction medium. The results indicated the feasibility of magnetic separation of the synthesized catalysts. A long duration test indicated that the catalyst exhibits stability throughout the degradation reaction, as more than 80% of IBP was degraded after 300 minutes. The photocatalytic activity was directly affected by the ferrite load. The higher the nominal load of ferrite, the lower the performance in IBP degradation. It was also observed that the smallest amount of ferrite studied was enough for the catalyst to be recovered and reused. The adsorption and photolysis tests did not show significant results in the IBP degradation. In addition, it was possible to verify that the aqueous matrix, the use of solar radiation and the addition of additive (acid formic) were interfered directly in the process. The catalyst reuse tests indicated that it can be recovered and reused at least three times without considerable catalytic activity loss. HIGHLIGHTS Ag/ZnO/CoFe2O4 magnetic photocatalysts.; Magnetic separation.; Influence of the matrix, radiation source and presence of additive in ibuprofen degradation.;
format	article
author	Giane Gonçalves Lenzi Mylena Ferreira Lopes Dana Isabelly Andrade José Salvador Napoli Andrieli Parolin Yuri Barros Fávaro Maria Eduarda Kounaris Fuziki Lariana Negrão Beraldo de Almeida Tatiana Gulminie Josué Daniele Toniolo Dias Angelo Marcelo Tusset
author_facet	Giane Gonçalves Lenzi Mylena Ferreira Lopes Dana Isabelly Andrade José Salvador Napoli Andrieli Parolin Yuri Barros Fávaro Maria Eduarda Kounaris Fuziki Lariana Negrão Beraldo de Almeida Tatiana Gulminie Josué Daniele Toniolo Dias Angelo Marcelo Tusset
author_sort	Giane Gonçalves Lenzi
title	Functioned catalysts with magnetic core applied in ibuprofen degradation
title_short	Functioned catalysts with magnetic core applied in ibuprofen degradation
title_full	Functioned catalysts with magnetic core applied in ibuprofen degradation
title_fullStr	Functioned catalysts with magnetic core applied in ibuprofen degradation
title_full_unstemmed	Functioned catalysts with magnetic core applied in ibuprofen degradation
title_sort	functioned catalysts with magnetic core applied in ibuprofen degradation
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/92de7fee3f614674800952d85a27db84
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Functioned catalysts with magnetic core applied in ibuprofen degradation

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