BiVO_4的制备及其光催化性能的研究

Preparation and photocatalytic properties of BiVO_4

通过直接沉淀法,以硝酸铋和偏钒酸铵为主要原料,制备了BiVO4前驱体,经过不同温度焙烧得到相应的光催化剂,研究了样品的光电响应强度和对甲基橙的光催化活性。结果表明,400℃时制得的BiVO4的可见光响应强度最大,为1.206 42 mA/cm2,在光照180 min后,对10 mg/L甲基橙溶液的降解率为54.33%。

BiVO4 Photocatalyst were prepared by milling and heating treatment with different temperature via Bi（NO3）3 · 5H2O and NH4VO3.The photoelectric response strength and photocatalytic activity of methyl orange（MO） were investigated.The result showed that the BiVO4 （400 ℃） had the highest photoelectric response intensity with 1.206 42 mA/cm2,the degradation rate of 10 mg/L MO can reach 54.33％ under visible light irradiation within 180 min.