钙钛矿型氧化物LaBO_3对SDBS的光催化降解研究

Photocatalytic Degradation of SDBS by Pervoskite LaBO_3

本文采用了溶胶-凝胶法和流变相法合成出La BO3型钙钛矿复合氧化物,其中B为Cr、Mn、Fe、Co、Ni,并以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表面活性剂十二烷基苯磺酸钠的光催化降解效果。结果表明La Co O3对SDBS的降解有较高的活性。在紫外光下、催化剂的量为2.5 g/L、p H值=6、SDBS的初始质量浓度为25 mg/L,La Co O3对SDBS溶液有较好的降解效果,降解率达到85.19%。

Pervoskite LaBO3（B = Cr、Mn、Fe、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 SDBS . The results show that the best activity is LacoO3 for SDBS. The degradation rate of LacoO3 for SDBS is up to 85. 19% with UV light,when the concentration of catalyst is 2. 5 g/ L,pH is at 6. 0 and concentration of SDBS is 25 mg/ L .