TiO2-La2O3 as Photocatalysts in the Degradation of Naproxen

Adriana Marizcal-Barba; Isaias Limón-Rocha; Arturo Barrera; José Eduardo Casillas; O. A. González-Vargas; José Luis Rico; Claudia Martinez-Gómez; Alejandro Pérez-Larios

doi:10.3390/inorganics10050067

Inorganics (May 2022)

TiO2-La2O3 as Photocatalysts in the Degradation of Naproxen

Adriana Marizcal-Barba,
Isaias Limón-Rocha,
Arturo Barrera,
José Eduardo Casillas,
O. A. González-Vargas,
José Luis Rico,
Claudia Martinez-Gómez,
Alejandro Pérez-Larios

Affiliations

Adriana Marizcal-Barba: Materials, Water and Energy Research Laboratory, Department of Engineering, Los Altos University Center, University of Guadalajara, Tepatitlán de Morelos 47600, Mexico
Isaias Limón-Rocha: Materials, Water and Energy Research Laboratory, Department of Engineering, Los Altos University Center, University of Guadalajara, Tepatitlán de Morelos 47600, Mexico
Arturo Barrera: Laboratory of Catalytic Nanomaterials, Department of Basic Sciences, La Ciénega University Center, University of Guadalajara, Ocotlán 47820, Mexico
José Eduardo Casillas: Laboratory of Catalytic Nanomaterials, Department of Basic Sciences, La Ciénega University Center, University of Guadalajara, Ocotlán 47820, Mexico
O. A. González-Vargas: Control and Automation Engineering Department, School of Mechanical and Electrical Engineering-Zacatenco, National Polytechnic Institute, Ciudad de México 07738, Mexico
José Luis Rico: Catalysis Laboratory, Faculty of Chemical Engineering, Michoacan University of San Nicolás de Hidalgo, Morelia 58060, Mexico
Claudia Martinez-Gómez: Department of Chemistry, Division of Natural and Exact Sciences, Campus Guanajuato, University of Guanajuato. Noria Alta S/N, Col. Noria Alta, Guanajuato 36050, Mexico
Alejandro Pérez-Larios: Materials, Water and Energy Research Laboratory, Department of Engineering, Los Altos University Center, University of Guadalajara, Tepatitlán de Morelos 47600, Mexico

DOI: https://doi.org/10.3390/inorganics10050067
Journal volume & issue: Vol. 10, no. 5
p. 67

Abstract

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The indiscriminate use of naproxen as an anti-inflammatory has been the leading cause of pollution in sewage effluents. Conversely, titanium dioxide is one of the most promising photocatalyst for the degradation of pollutants. Ti-La mixed oxides containing 0, 1, 3, 5, and 10 wt.% of lanthanum were synthetized by sol-gel and tested as photocatalysts in the degradation of naproxen (NPX). The materials were further characterized by X-ray diffraction (XRD), nitrogen physisorption (BET), scanning electron microscopy (SEM), UV-Vis and Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The XRD patterns resembled that of anatase titania. The Eg values, determined from the UV-Vis spectra, vary from 2.07 to 3.2 eV corresponded to pure titania. The photocatalytic activity of these materials showed a degradation of naproxen from 93.6 to 99.8 wt.% after 4 h under UV irradiation.

Published in Inorganics

ISSN: 2304-6740 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Inorganic chemistry
Website: http://www.mdpi.com/journal/Inorganics

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