UV/visible-light photodegradation of organic dyes over mesoporous titania prepared by using 2,4,5-triphenylimidazole as template

作者：Tao, Jun; Gong, Wenjuan; Yan, Zhiying^*; Duan, Deliang; Zeng, Yanbo; Wang, Jiaqiang

来源：Materials Science in Semiconductor Processing, 2014, 27(1): 452-460.

DOI：10.1016/j.mssp.2014.07.026

• Mesoporous TiO2
• Visible-light photocatalysis
• UV light photocatalysis
• 2,4,5-Triphenylimidazole
• Dyes

In this work, mesoporous TiO2 compose of anatase and brookite phases (M-TiO2) has been synthesized using 2,4,5-tiiphenylimidazole as template. The physical features of the as-prepared catalyst was measured by X-ray diffraction (XRD), low-temperature nitrogen adsorption/desorption, UV-visible diffuse reflectance spectrum, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The photocatalytic performance of the catalyst was evaluated in terms of the degradation of organic dyes, It is found that M-TiO2 exhibits reasonable activity under UV light and can significantly degrade methylthionine chloride, rhodamine B, gentian violet, safranine T, methyl violet and fuchsine basic under visible-light irradiation (lambda >= 420 nm).

• 出版日期2014-11
• 单位昆明理工大学; 云南大学