Funct. Mater. 2020; 27 (3): 622-627.


Preparation and properties of a composite quartz sand catalyst with supported TiO2 nanoparticles

J.Jianhua1, L.Gang1,2

1Department of Traffic and Municipal Engineering, Sichuan College of Architectural Technology, Chengdu, China
2Deyang Key Laboratory of Building and Bridge Structure Engineering, Sichuan College of Architectural Technology, Deyang, China


A composite catalyst based on quartz sand with TiO2 nanoparticles supported was prepared by the sol-gel method with using tetrabutyl titanate (TBOT) and quartz sand as raw material, and a photocatalytic degradation test of methylene blue (MB) was performed. The microstructure of the prepared composite catalyst was characterized by X-ray diffraction (XRD) and scanning electronic microscope-energy dispersive spectrometer (SEM-EDS). The effects of TiO2 loading, calcination temperature, and pH value on the photocatalytic degradation efficiency were studied. The results showed that the degradation rate of MB increased with an increase of TiO2 loading, and decreased with an increase of calcination temperature and pH value. The microstructure analysis showed that nano-TiO2 particles were homogeneously dispersed on the surface of the quartz sand, and the quartz sand has a strong adsorption effect towards MB. The efficiency of photocatalytic degradation of MB is significantly increased due to the synergistic effect of a composite catalyst based on quartz sand with nano-TiO2 supported.

quartz sand, nanoparticle, methylene blue, photocatalytic degradation.

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