Preparation and Photocatalytic Performance of TiO2/Ni3[Ge2O5](OH)4 Composite Material

Abstract

Abstract: Using Ni₃[Ge₂O₅](OH)₄ as the carrier and ammonium fluorotitanate as the raw material, the nano-TiO₂/Ni₃[Ge₂O₅](OH)₄ composite material was prepared by the hydrothermal-assisted liquid phase deposition method. The phase composition, structural characteristics and microscopic morphology were tested and analyzed through X-ray diffraction (XRD), Raman spectroscopy (RM), field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HTEM), ultraviolet-visible absorption spectroscopy (UV-Vis) and other characterization methods, and the effect of different loadings of titanium dioxide on the photodegradability of methylene blue of the nano-TiO₂/Ni₃[Ge₂O₅](OH)₄ composite material was explored. The results show that the experiment has realized the close combination and effective dispersion of nano-TiO₂ and Ni₃[Ge₂O₅](OH)₄. The TiO₂ has an anatase structure with an average particle size of 20 nm. The composite material can effectively inhibit the recombination of photo-generated carriers, improve the adsorption performance of the material, and increase the photocatalytic efficiency of the material. When the molar ratio of TiO₂ to Ni₃[Ge₂O₅](OH)₄ in the composite material is 3.1∶1, the material has the highest photocatalytic efficiency for methylene blue, and the photodegradation rate of methylene blue in 90 min is 99.81%.

Key words: TiO₂, Ni₃[Ge₂O₅](OH)₄, composite material, photocatalytic degradation, organic pollutant, methylene blue

CLC Number:

MIN Tao, MA Guohua, LIU Guijun, ZHENG Yuting. Preparation and Photocatalytic Performance of TiO₂/Ni₃[Ge₂O₅](OH)₄ Composite Material[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(11): 2086-2092.

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Preparation and Photocatalytic Performance of TiO₂/Ni₃[Ge₂O₅](OH)₄ Composite Material

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