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Title: Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity
Authors: Limón Rocha, Isaías
Guzmán González, Carlos Alberto
Anaya Esparza, Luis Miguel
Romero Toledo, Rafael
Rico, José Luis
González Vargas, Oscar Arturo
Pérez Larios, Alejandro
Keywords: ZnO
organic pesticides
Issue Date: Feb-2022
Publisher: MDPI
Citation: Limón-Rocha I, Guzmán-González CA, Anaya-Esparza LM, Romero-Toledo R, Rico JL, González-Vargas OA, Pérez-Larios A. Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity. Inorganics. 2022; 10(2):16.
Series/Report no.: Inorganics;Vol. 10, Núm. 2, 16, 2022
Abstract: Abstract Zinc nitrate (ZnON) and zinc acetate (ZnOA) were used as precursors for the synthesis of zinc oxide (ZnO) nanoparticles by the sol–gel method. The ZnO powder was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy, X-ray diffraction (UV–Vis DRS), Fourier transform infrared spectroscopy (FTIR), physisorption of nitrogen, and X-ray photoelectron spectroscopy (XPS). On the other hand, the photocatalytic activity of the samples was tested in the degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D) and 2,4-Dichlorophenol (2,4-DCP) under UV-light irradiation. The ZnON and ZnOA showed polycrystalline irregular structures and rod-like morphology with mean sizes of 40 and 99 nm, respectively. The precursor type influenced the bandgap, crystallite size, surface area, total pore volume, and pore diameter. The XPS results showed high contents of C and N in the ZnO samples, and as a consequence, the solids present remarkable differences in the C/N, O/C, and O/Zn atomic ratios, which significantly influenced the physicochemical characteristics. The ZnON and ZnOA exhibit photocatalytic properties against 2,4-D (74.7 and 90.9%, respectively) and 2,4-DCP (78.4 and 86.7%, respectively) and better performance of ZnOA. These results are promising and indicate the potential to use this material as a photocatalyst to degrade organic pesticides.
Description: Artículo
ISSN: 2304-6740
Appears in Collections:2414 Artículos

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