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International Journal of Photoenergy
Volume 2016 (2016), Article ID 5256941, 13 pages
Research Article

Evaluation of Hydrocalumite-Like Compounds as Catalyst Precursors in the Photodegradation of 2,4-Dichlorophenoxyacetic Acid

1Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Avenida San Claudio y 18 Sur, 72570 Puebla, PUE, Mexico
2Universidad de Guanajuato, Coonia Noria Alta SIN, 36050 Guanajuato, GTO, Mexico
3Instituto Politécnico Nacional, CICATA Legaria, Legaria 694, Colonia Irrigación, 11500 Mexico City, Mexico
4Departamento de Química, UAM Iztapalapa, Avenida San Rafael Atlixco No. 186, 09340 Mexico City, Mexico

Received 10 March 2016; Revised 13 June 2016; Accepted 22 June 2016

Academic Editor: Ying Dai

Copyright © 2016 Manuel Sánchez-Cantú 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.


Three hydrocalumite-like compounds in a Ca/Al ratio of 2 containing nitrate and acetate anions in the interlaminar region were prepared by a simple, economic, and environmentally friendly method. The solids were characterized by X-ray powder diffraction (XRD), thermogravimetric (TG) analysis, nitrogen adsorption-desorption at −196°C, scanning electron microscopy (SEM), infrared spectroscopy (FTIR), and UV-Vis Diffuse Reflectance Spectroscopy (DRS). The catalytic activity of the calcined solids at 700°C was tested in the photodegradation of 2,4-dichlorophenoxyacetic acid (2,4-D) where 57% degradation of 2,4-D (40 ppm) and a mineralization percentage of 60% were accomplished within 150 minutes. The photocatalytic properties were attributed to mayenite hydration, since the oxide ions in the cages are capable of reacting with water to form hydroxide anions capable of breaking down the 2,4-D molecules.