W掺杂BiOCl光催化剂的制备及其可见光催化性能研究

在以Bi(NO3)3为铋源、WCl6为氯源和钨源、乙二醇为溶剂、尿素为添加剂形成的新Bi-W-Cl-O体系下采用一步溶剂热法合成W掺杂BiOCl光催化剂,应用XRD、FSEM、XPS和UV-Vis对样品进行表征,并以苯气体作为降解物,考察了W掺杂BiOCl光催化剂的光催化性能。结果表明,由于金属W的掺杂,BiOCl的吸收波长发生明显红移,相比于纯BiOCl提高了对太阳光的利用率,同时大大提高了BiOCl在可见光下的光催化降解苯效率。

Study on Preparation and Visible Light Photocatalytic Performance of Nano W-Doped BiOCl Photocatalyst

W-Doped BiOCl photocatalyst was prepared using a one pot solvothermal method in a new Bi-W-Cl-O system,with Bi（NO3） 3 as bismuth source,WCl6 as chlorine source and tungsten source,ethylene glycol as solvent,urea as additive.The as-prepared samples were characterized with X-ray diffraction （XRD）,field-emission scanning electron microscopy （FSEM）,XPS and UV-Vis absorption spectroscopy.The degradation of benzene gas was used as the model reaction to investigate the photocatalytic performance of the photocatalyst.The results showed that the absorption edge of W-doped BiOCl had a regular red shift against pure BiOCl,which increased the utilization rate of visible light and greatly improved photocatalytic degradation of benzene under visible light,so W-doped BiOCl exhibited excellent photodegradation efficiency towards benzene gas under visiblelight irradiation.