INIFTA   05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Application of Novel Fulvic Acid-Coated Magnetite Nanoparticles for CO2 −-Mediated Photoreduction of Cr(VI)
Autor/es:
MUCCI, CARLA R.; MÁRTIRE, DANIEL O.; FERNÁNDEZ SOLARTE, ALEJANDRA M.; FERNÁNDEZ SOLARTE, ALEJANDRA M.; ARCE, VALERIA B.; TORRES SÁNCHEZ, ROSA M.; ARCE, VALERIA B.; TORRES SÁNCHEZ, ROSA M.; MUCCI, CARLA R.; MÁRTIRE, DANIEL O.
Revista:
WATER AIR AND SOIL POLLUTION
Editorial:
SPRINGER
Referencias:
Año: 2018 vol. 229 p. 39 - 47
ISSN:
0049-6979
Resumen:
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 photo-reduction 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.