TY - JOUR
T1 - Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity
AU - Limón‐rocha, Isaias
AU - Guzmán‐gonzález, C. A.
AU - Anaya‐esparza, Luis M.
AU - Romero‐toledo, R.
AU - Rico, J. L.
AU - González‐vargas, O. A.
AU - Pérez‐larios, A.
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/2
Y1 - 2022/2
N2 - 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‐Dichlorophenoxyace-tic 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.
AB - 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‐Dichlorophenoxyace-tic 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.
KW - 2,4‐D
KW - 2,4‐DCP
KW - Organic pesticides
KW - Photocatalysis
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=85124120799&partnerID=8YFLogxK
U2 - 10.3390/inorganics10020016
DO - 10.3390/inorganics10020016
M3 - Artículo
AN - SCOPUS:85124120799
SN - 2304-6740
VL - 10
JO - Inorganics
JF - Inorganics
IS - 2
M1 - 16
ER -