Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand

Abstract We present the synthesis of new composite materials based on copper nanoparticles (Cu NPs) deposited onto montmorillonite (MK10) and quartz sand, for degradation of atrazine, in the context of an advanced oxidation process (AOP). The synthesis involves a first step in which polyethylenimine...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Sethu Kalidhasan, Ishai Dror, Brian Berkowitz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/05bff97b9d02497c865563f56c79350a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:05bff97b9d02497c865563f56c79350a
record_format	dspace
spelling	oai:doaj.org-article:05bff97b9d02497c865563f56c79350a2021-12-02T11:40:24ZAtrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand10.1038/s41598-017-01429-52045-2322https://doaj.org/article/05bff97b9d02497c865563f56c79350a2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01429-5https://doaj.org/toc/2045-2322Abstract We present the synthesis of new composite materials based on copper nanoparticles (Cu NPs) deposited onto montmorillonite (MK10) and quartz sand, for degradation of atrazine, in the context of an advanced oxidation process (AOP). The synthesis involves a first step in which polyethylenimine (PEI) capped Cu NPs (PEI_Cu NPs) are prepared, and then deposited onto, separately, MK10 and sand, through a solvent impregnation method. The resulting products are characterized in detail; the copper is found to exist as a mixture of copper (I, II) oxide. The degradation of atrazine follows a second-order kinetic model with constant values of K2 = 1.7957 g mg−1 min−1 for MK10_PEI_Cu NPs and K2 = 0.8133 g mg−1 min−1 for sand_PEI_Cu NPs. The reaction rate is linked to Cu2O and CuO redox-active species within the layers, pores and surface of the host materials. A degradation mechanism is found with application of these composite materials in the presence of H2O2; adsorption occurs in the absence of H2O2. In contrast, the unmodified MK10 and sand exhibit adsorption in both of the above reaction conditions. Finally, the stability of the Cu NPs following degradation is evaluated, and no significant amount of copper leaching is found.Sethu KalidhasanIshai DrorBrian BerkowitzNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sethu Kalidhasan Ishai Dror Brian Berkowitz Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
description	Abstract We present the synthesis of new composite materials based on copper nanoparticles (Cu NPs) deposited onto montmorillonite (MK10) and quartz sand, for degradation of atrazine, in the context of an advanced oxidation process (AOP). The synthesis involves a first step in which polyethylenimine (PEI) capped Cu NPs (PEI_Cu NPs) are prepared, and then deposited onto, separately, MK10 and sand, through a solvent impregnation method. The resulting products are characterized in detail; the copper is found to exist as a mixture of copper (I, II) oxide. The degradation of atrazine follows a second-order kinetic model with constant values of K2 = 1.7957 g mg−1 min−1 for MK10_PEI_Cu NPs and K2 = 0.8133 g mg−1 min−1 for sand_PEI_Cu NPs. The reaction rate is linked to Cu2O and CuO redox-active species within the layers, pores and surface of the host materials. A degradation mechanism is found with application of these composite materials in the presence of H2O2; adsorption occurs in the absence of H2O2. In contrast, the unmodified MK10 and sand exhibit adsorption in both of the above reaction conditions. Finally, the stability of the Cu NPs following degradation is evaluated, and no significant amount of copper leaching is found.
format	article
author	Sethu Kalidhasan Ishai Dror Brian Berkowitz
author_facet	Sethu Kalidhasan Ishai Dror Brian Berkowitz
author_sort	Sethu Kalidhasan
title	Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
title_short	Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
title_full	Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
title_fullStr	Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
title_full_unstemmed	Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand
title_sort	atrazine degradation through pei-copper nanoparticles deposited onto montmorillonite and sand
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/05bff97b9d02497c865563f56c79350a
work_keys_str_mv	AT sethukalidhasan atrazinedegradationthroughpeicoppernanoparticlesdepositedontomontmorilloniteandsand AT ishaidror atrazinedegradationthroughpeicoppernanoparticlesdepositedontomontmorilloniteandsand AT brianberkowitz atrazinedegradationthroughpeicoppernanoparticlesdepositedontomontmorilloniteandsand
_version_	1718395622339379200

Atrazine degradation through PEI-copper nanoparticles deposited onto montmorillonite and sand

Ejemplares similares