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JOURNAL OF SYNTHETIC CRYSTALS ›› 2024, Vol. 53 ›› Issue (12): 2181-2188.

• Research Articles • Previous Articles     Next Articles

Preparation of Multi-Morphology TiO2 and Its Photocatalytic Degradation of Tetracycline

LI Xia, YAO Mengqin, LIU Fei   

  1. College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
  • Received:2024-08-05 Online:2024-12-15 Published:2024-12-20

Abstract: Photocatalysis is an essential approach for treating tetracycline (TC) contaminants, and photocatalytic materials play a crucial role in this process. TiO2 is a widely used photocatalyst, its morphology will significantly affect its catalytic performance. Therefore, urchin-like (TiO2-U), nanoparticle (TiO2-N) and hollow tubular (TiO2-T) TiO2 were prepared by hydrothermal method in this paper. The morphology and structure of the prepared catalysts were analyzed by XRD, SEM, XPS, UV-Vis DRS, N2 adsorption-desorption and EPR, and their degradation performance of TC were investigated. The results show that TiO2-U contains the greatest number of defects, and the synergistic effect of cationic and anionic defects narrow the band gap of TiO2-U, which reveal the best catalytic activity. The degradation rate of TC by TiO2-U can reach 100% at illumination 60 min. In addition, TiO2-U has a large specific surface area due to its distinctive urchin-like structure, which is conducive to the adsorption of TC and enhances the degradation efficiency.

Key words: titanium dioxide, morphology, photocatalytic degradation, tetracycline, catalytic activity

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