论文部分内容阅读
采用高温固相反应法,合成了系列类钙钛矿型氧化物LiBa4Nb3-xTaxO12(x=0,1,2),通过X射线衍射(XRD)、扫描电镜(SEM)进行了物相与形貌表征。以紫外灯为光源、酸性红为对象进行光催化降解试验。结果表明:LiBa4NbTa2O12的催化活性最高;分析了不同条件对降解的影响,发现当酸性红浓度为20 mg/L、催化剂浓度为0.4 g/L时,降解率最高;红外图谱显示,酸性红降解并非吸附所致。
A series of perovskite-type oxides, LiBa4Nb3-xTaxO12 (x = 0,1,2), were synthesized by high temperature solid-state reaction. The phase and morphology were characterized by X-ray diffraction and scanning electron microscopy Characterization. UV light as the light source, acid red for photocatalytic degradation experiments. The results showed that LiBa4NbTa2O12 had the highest catalytic activity. The effect of different conditions on the degradation was analyzed. The results showed that the degradation rate of LiBa4NbTa2O12 was the highest when the acid red concentration was 20 mg / L and the catalyst concentration was 0.4 g / L. The infrared spectrum showed that the acid red degradation was not Due to adsorption.