Preparation and Photocatalytic Activity of Sn-Doped BiOCl Photocatalyst
The Sn-doped BiOCl photocatalyst was synthesized by hydrolysis method with BiCl3,SnCl4 · 5H2O and HCl as raw materials,and the as-prepared photocatalyst were charaterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),energy dispersive spectrometry (EDS) and diffuse reflectance spectrometry (DRS).Under the irradiation of xenon lamp,the photocatalytic properties of Sn-doped BiOCl photocatalysts were investigated by using degradation of MO solution as target decomposition material.The results demonstrate that Sndoped BiOCl photocatalyst prepared by hydrolysis method has better photocatalytic activity,undoped BiOCl and Sn-doped BiOCl are square crystalloid,but Sn-doped BiOCl gives diffraction peak slightly shifted towards higher angle,and morphology of photocatalyst is of uniform flake structure,compared with undoped BiOCl,the light absorption of Sn-doped BiOCl apparently extends into visible light region.The photocatalytic activity is the highest,when the suitable photocatalyst concentration is 1 g/L,doping amount of Sn is 9 ％,and the degradation rate of methyl orange solution (100 mL,10 mg/L) under xenon lamp irradiation reaches 100％ in 120 min.
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