钙钛矿氧化物LaNiO_3对结晶紫的光催化降解研究

Photocatalytic Degradation of Crystal Violet by Pervoskite LaNiO_3

采用了溶胶-凝胶法和流变相法合成出钙钛矿复合氧化物LaBO3(B=Co、Ni),用X衍射线和透射电镜TEM对其结构进行表征,重点研究了合成的催化剂对染料结晶紫的光催化降解条件。结果表明LaNiO3对结晶紫的降解有较高的活性,当结晶紫的浓度为10 mg/L时,紫外光照射,光照时间为8 h,pH=9,催化剂的投加量为2.5 g/L的条件对结晶紫光有较好的降解效果,降解率达到99.30%。

Pervoskite LaBO3（ B = Co,Ni） were prepared by using sol-gel and rheological phase method, characterized by X-ray diffraction（ XRD） and transmission electron microscopy（ TEM）. The photocatalytic activities of the catalysts were investigated for photocatalytic degradation of crystal violet. The results showed that the best activity was LaNiO3 for crystal violet. The degradation rate of LaNiO3 for crystal violet was up to 99. 30% with UV light,2. 5 g / L amount of catalyst and pH = 9. 0 when the concentration of crystal violet was 10 mg / L.