Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts

In this work, the synthesis of pure and (Ce, Ag) co-doped ZnO was successfully accomplished using a solvothermal process. The synthesized samples were characterized by ultraviolet–visible spectroscopy, X-ray diffraction, and scanning electron microscopy. The photocatalytic ability of the samples is...

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Autores principales:	Tayeb Bouarroudj, Lamine Aoudjit, Lerari Djahida, Beddiaf Zaidi, Maamar Ouraghi, Djamila Zioui, Sarah Mahidine, Chander Shekhar, Khaldoun Bachari
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	azo dye co-doped zno degradation mechanism photocatalysis tartrazine zno Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/45eefd034a344961b383892816dbb252
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spelling	oai:doaj.org-article:45eefd034a344961b383892816dbb2522021-11-06T11:01:35ZPhotodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts0273-12231996-973210.2166/wst.2021.106https://doaj.org/article/45eefd034a344961b383892816dbb2522021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/9/2118https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732In this work, the synthesis of pure and (Ce, Ag) co-doped ZnO was successfully accomplished using a solvothermal process. The synthesized samples were characterized by ultraviolet–visible spectroscopy, X-ray diffraction, and scanning electron microscopy. The photocatalytic ability of the samples is estimated through degradation of tartrazine in aqueous solution under photocatalytic conditions. The degradation study carried out for a reaction period of 90 min at and a free pH = 6.0 found that dye degradation is 44.82% for pure ZnO and 98.91% for (Ce, Ag) co-doped ZnO samples, indicating its excellent photocatalytic ability. Tartrazine mineralization was also studied by calculating the degradation of chemical oxygen demand. The effect of operating parameters such as catalyst dose, initial concentration of tartrazine, initial reaction pH, and nature of light source has been optimized for tartrazine degradation as a function of time. The reusability of ZnO and (Ce, Ag) co-doped ZnO catalysts was studied and its photocatalytic efficiency was found to be unchanged, even after six cycles of use. The mechanism of photocatalytic activity was also proposed. HIGHLIGHTS The (Ce, Ag)/ZnO catalyst exhibited outstanding photocatalytic activity.; The effect of tartrazine concentration on photocatalysis performance was studied.; The degradation time of tartrazine using (Ce, Ag)/ZnO catalyst is 90 min.; The reusability of our catalysts ZnO and (Ce, Ag)/ZnO was also explored.;Tayeb BouarroudjLamine AoudjitLerari DjahidaBeddiaf ZaidiMaamar OuraghiDjamila ZiouiSarah MahidineChander ShekharKhaldoun BachariIWA Publishingarticleazo dyeco-doped znodegradation mechanismphotocatalysistartrazineznoEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 9, Pp 2118-2134 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	azo dye co-doped zno degradation mechanism photocatalysis tartrazine zno Environmental technology. Sanitary engineering TD1-1066
spellingShingle	azo dye co-doped zno degradation mechanism photocatalysis tartrazine zno Environmental technology. Sanitary engineering TD1-1066 Tayeb Bouarroudj Lamine Aoudjit Lerari Djahida Beddiaf Zaidi Maamar Ouraghi Djamila Zioui Sarah Mahidine Chander Shekhar Khaldoun Bachari Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts
description	In this work, the synthesis of pure and (Ce, Ag) co-doped ZnO was successfully accomplished using a solvothermal process. The synthesized samples were characterized by ultraviolet–visible spectroscopy, X-ray diffraction, and scanning electron microscopy. The photocatalytic ability of the samples is estimated through degradation of tartrazine in aqueous solution under photocatalytic conditions. The degradation study carried out for a reaction period of 90 min at and a free pH = 6.0 found that dye degradation is 44.82% for pure ZnO and 98.91% for (Ce, Ag) co-doped ZnO samples, indicating its excellent photocatalytic ability. Tartrazine mineralization was also studied by calculating the degradation of chemical oxygen demand. The effect of operating parameters such as catalyst dose, initial concentration of tartrazine, initial reaction pH, and nature of light source has been optimized for tartrazine degradation as a function of time. The reusability of ZnO and (Ce, Ag) co-doped ZnO catalysts was studied and its photocatalytic efficiency was found to be unchanged, even after six cycles of use. The mechanism of photocatalytic activity was also proposed. HIGHLIGHTS The (Ce, Ag)/ZnO catalyst exhibited outstanding photocatalytic activity.; The effect of tartrazine concentration on photocatalysis performance was studied.; The degradation time of tartrazine using (Ce, Ag)/ZnO catalyst is 90 min.; The reusability of our catalysts ZnO and (Ce, Ag)/ZnO was also explored.;
format	article
author	Tayeb Bouarroudj Lamine Aoudjit Lerari Djahida Beddiaf Zaidi Maamar Ouraghi Djamila Zioui Sarah Mahidine Chander Shekhar Khaldoun Bachari
author_facet	Tayeb Bouarroudj Lamine Aoudjit Lerari Djahida Beddiaf Zaidi Maamar Ouraghi Djamila Zioui Sarah Mahidine Chander Shekhar Khaldoun Bachari
author_sort	Tayeb Bouarroudj
title	Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts
title_short	Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts
title_full	Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts
title_fullStr	Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts
title_full_unstemmed	Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts
title_sort	photodegradation of tartrazine dye favored by natural sunlight on pure and (ce, ag) co-doped zno catalysts
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/45eefd034a344961b383892816dbb252
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Photodegradation of tartrazine dye favored by natural sunlight on pure and (Ce, Ag) co-doped ZnO catalysts

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