期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：7
页码：14405
出版社：S&S Publications
摘要：Perovskite structured BaBiO3 was prepared at low temperature by polymeric precursor method (Pechinimethod). In this approach, metal nitrate, citric acid, and ethylene glycol were used as the source of metal, chelatingagent and connecting agent respectively. The raw photocatalyst was activated at different temperatures. The structureand morphology of annealed samples were characterized by Thermo Gravimetric Analysis (TGA), Powder X-RayDiffraction (XRD), Scanning Electron Microscopy (SEM) and UV-Visible Diffuse Reflectance Spectroscopy (UVDRS).The XRD patterns suggested that pure crystalline powder was obtained at 800 oC. The SEM images revealed thenano size and rod-like shape of BaBiO3 particles. The band gap energy was calculated from the UV-DRS and it wasfound to be 2.07 eV. The band gap and the crystal structure data suggest that this material can be used as photocatalystin visible region. The photocatalytic activity of BaBiO3 was evaluated for the degradation of diclofenac drug (DCF)under indoor lamp illumination and solar radiation. The obtained results were also compared with Degussa P-25 TiO2and comparison showed that BaBiO3 catalyst was more efficient in visible region. Additionally, the recyclingexperiments confirmed the attractive stability of the catalyst.
关键词：BaBiO3; Perovskite; Pechini methods; Low temperature synthesis; Diclofenac drug; Photocatalysis.
