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International Journal of Photoenergy
Volume 2017, Article ID 9314764, 6 pages
https://doi.org/10.1155/2017/9314764
Research Article

Effect of the Fe Nanoparticles Generated by Pulsed Plasma in Liquid in the Catalyzed Ozone Removal of Phenolphthalein

1Centro Conjunto de Investigación en Química Sustentable (CCIQS) UAEM-UNAM, Universidad Autónoma del Estado de México, Carr. Toluca-Atlacomulco km 14.5, 50200 Toluca, MEX, Mexico
2Departamento de Física, Instituto Nacional de Investigaciones Nucleares, Apdo. Postal 18-1027, Mexico City, Mexico

Correspondence should be addressed to O. Olea-Mejia; xm.moc.oohay@racsoaelo

Received 26 December 2016; Accepted 31 January 2017; Published 28 March 2017

Academic Editor: Leonardo Palmisano

Copyright © 2017 O. Olea-Mejia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We have synthesized, in this work, zero valent iron (ZVI) nanoparticles to improve the efficiency of degradation of phenolphthalein catalyzed by ozone in aqueous solution. The Fe nanoparticles were obtained using the pulsed plasma in liquid (PPL) method with water as the liquid medium. Such nanoparticles have a mean size of 12 nm and are composed of ~80% Fe0, while the rest are a mixture of Fe+2 and Fe+3 oxides. The degradation of phenolphthalein was carried on a glass reactor injecting a constant amount of ozone and introducing different concentrations of Fe nanoparticles to the system. When using pure ozone, the percentage of degradation of phenolphthalein measured by colorimetry after one hour of reaction was 84%. However, when Fe nanoparticles are used, such percentage can be as high as 98% in 50 minutes of reaction. Furthermore, the degradation rate constant was 0.0334 min−1 with only ozone and it can be as high as 0.0733 min−1 with Fe nanoparticles. Finally, the total mineralization of phenolphthalein was obtained by total organic carbon (TOC) determinations. It is shown that when using only ozone, we obtained a percentage of mineralization of 49% and 96% when using the highest concentration of Fe nanoparticles.