Ecofriendly-developed Polyacrylic Acid-coated Magnetic Nanoparticles as Catalysts in Photo-fenton Processes

Laura M. Sanchez1,*, Pablo A. Ochoa Rodríguez2, Daniel G. Actis3, Verónica R. Elías2, Griselda A. Eimer2, Verónica Lassalle4, Vera A. Alvarez1

1Materiales Compuestos Termoplásticos (CoMP), Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), CONICET - Universidad Nacional de Mar del Plata (UNMdP). Av. Colón 10890, Mar del Plata, 7600, Argentina

2Centro de Investigación y Tecnología Química (CITeQ) (UTN-CONICET), Facultad Regional Córdoba, Maestro López y Cruz Roja Argentina, Ciudad Universitaria, CP: 5016 Córdoba, Argentina

3Instituto de Física de La Plata (IFLP), CONICET-Departamento de Física, Universidad Nacional de La Plata (UNLP).
La Plata, 1900, Argentina

4INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, 8000 Bahía Blanca, Argentina

Adv. Mater. Lett., 2020, 11 (3), 20031486 (1-5)

DOI: 10.5185/amlett.2020.031486

Publication Date (Web): Feb 26, 2020

E-mail: lsanchez@mdp.edu.ar

Abstract


In this work, iron oxide-based magnetic nanoparticles (MNPs) stabilized by polyacrylic acid (PAA) polymer were prepared and characterized as a continuation of a previous research already reported. MNPs composed by pure magnetite cores having good magnetic properties were developed, thus achieving an improvement in the modified coprecipitation method used. The photocatalytic activity of the nanoparticles towards acid orange 7 (AO7), under both radiation types, UV-Vis and LED-Vis, was tested. Pollutant degradation percentages of 64 and 37 % were obtained by using UV-Vis and LED-Vis radiation, respectively.

Keywords

Magnetic nanoparticles, polyacrylic acid, magnetite, photo-fenton reaction.

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