Abstract
A simple sol–gel method have been used to synthesize MgMoO4 nanoparticles with different particle sizes and surface morphology, and characterized by thermogravimetric and X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), scanning electron microscopy (SEM), UV–Vis spectroscopy and electrochemical workstation. The particle size of MgMoO4 nanoparticles prepared by addition ammonium cyanate, urea and without additives are 50, 80, and 100 nm, respectively. The MgMoO4 nanoparticles exhibit high ultraviolet absorption coefficient and visible light reflectance. The Eg value and the specific capacity of MgMoO4 nanoparticles decreases with the increasing of particle size. The spherical MgMoO4 nanoparticles exhibit high charge transfer and separation efficiency. The internal correlation mechanism between the optical properties and photocatalytic activity of MgMoO4 nanoparticles has been studied. The MgMoO4 nanoparticles exhibit high photocatalytic activity for the photocatalytic degradation of methyl red dye by UV light irradiation can be ascribed to the synergistic effect of surface active site, hole, hydroxyl radical and superoxide radical. This simple process can be used to synthesize other molybdate salts for applications in the field of photocatalysis.
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ACKNOWLEDGMENTS
This work was supported by the Talent Introduction Project (202100105) of Henan Vocational University of Science and Technology.
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Xuan, Z., Xuan, C. Regulating the Synthesis, Optical and Photocatalytic Activity of MgMoO4 Nanoparticles. Russ. J. Phys. Chem. 97, 2060–2069 (2023). https://doi.org/10.1134/S0036024423090297
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DOI: https://doi.org/10.1134/S0036024423090297