|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Preparation and Photocatalytic Properties of Mo-doped TiO2@fly Ash Cenospheres for Degradation of Methylene Blue
||Yongfeng Cai, Bin Xu, Li Guanghui, Min Li, Mingjun Rao, Jun Luo, Zhiwei Peng, Pengxu Cao
|On-Site Speaker (Planned)
Mo-doped titanium dioxide (TiO2) coated fly ash cenospheres (FAC) was synthesized by the sol-gel method. The novel photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) and X-ray photoelectron spectra (XPS). The results showed that the catalyst maintains the structure of anatase (TiO2), and the majority of doped Mo ions existed as Mo6+ ions substitution in anatase lattice, which caused red shift of TiO2 light absorption wavelength, broadening the light absorption range and making more effective use of solar energy. The photocatalytic activity of Mo-TiO2@FAC sample for the degradation of methylene blue (MB) under visible light irradiation was investigated. The photocatalyst that was calcined at 550 ℃ with Mo/Ti molar ratio of 0.3% and concentration of 2g/L exhibited the optimal photodecomposition property.