Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)

We here isolate fulvic acids from vermicompost to prepare and characterize novel fulvic acid-coated magnetite nanoparticles. UV-A irradiation of suspensions of the nanoparticles under different experimental conditions led to photoreduction of Cr(VI). In anoxic conditions in the presence of formic ac...

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Detalles Bibliográficos
Autores principales: Arce, Valeria Beatriz, Mucci, Carla Romina, Fernández Solarte, Alejandra María, Torres Sánchez, Rosa María, Mártire, Daniel Osvaldo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Química
Fulvic acids
Magnetic nanoparticles
Photo-reduction
Cr(VI)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/113794
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-113794
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Fulvic acids
Magnetic nanoparticles
Photo-reduction
Cr(VI)
spellingShingle Química
Fulvic acids
Magnetic nanoparticles
Photo-reduction
Cr(VI)
Arce, Valeria Beatriz
Mucci, Carla Romina
Fernández Solarte, Alejandra María
Torres Sánchez, Rosa María
Mártire, Daniel Osvaldo
Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)
topic_facet Química
Fulvic acids
Magnetic nanoparticles
Photo-reduction
Cr(VI)
description We here isolate fulvic acids from vermicompost to prepare and characterize novel fulvic acid-coated magnetite nanoparticles. UV-A irradiation of suspensions of the nanoparticles under different experimental conditions led to photoreduction of Cr(VI). In anoxic conditions in the presence of formic acid, after 60 min of irradiation ca. 100% of Cr(VI) was reduced. Under these conditions, the carbon dioxide radical anions, CO2 .-, mediated the photo-reduction of Cr(VI). However, the high reduction potential of Cr(VI) and the variety of reactive species generated upon UV-A irradiation make this nanomaterial also suitable for Cr(VI) photo-reduction also under aerobic conditions in the presence of formic acid or under anoxic conditions without the addition of formic acid. The possible photodegradation routes involved are discussed in detail.
format Articulo
Articulo
author Arce, Valeria Beatriz
Mucci, Carla Romina
Fernández Solarte, Alejandra María
Torres Sánchez, Rosa María
Mártire, Daniel Osvaldo
author_facet Arce, Valeria Beatriz
Mucci, Carla Romina
Fernández Solarte, Alejandra María
Torres Sánchez, Rosa María
Mártire, Daniel Osvaldo
author_sort Arce, Valeria Beatriz
title Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)
title_short Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)
title_full Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)
title_fullStr Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)
title_full_unstemmed Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO<SUB>2</SUB>−-Mediated Photoreduction of Cr(VI)
title_sort application of novel fulvic acid-coated magnetite nanoparticles for co<sub>2</sub>−-mediated photoreduction of cr(vi)
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/113794
work_keys_str_mv AT arcevaleriabeatriz applicationofnovelfulvicacidcoatedmagnetitenanoparticlesforcosub2submediatedphotoreductionofcrvi
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