摘要
Pervoskite type oxides LaCoO 3 was prepared by citrate method with the granula of 20 nm-30 nm. With a fluorescent Hg lamp or sunlight as irradiator, the degradation experiments of various water soluble dyes were carried out in the suspension system of LaCoO 3 . The results show that the pervoskite type oxide LaCoO 3 has good photocatalytic activity.Studied by X ray photoelectron spectroscopy and photoacoustic spectra, its photocatalytic activity is found to be related with factors such as the d electron structure of ion Co 3+ ,Co—O binding energy and adsorbed oxygen on the surface etc.
采用柠檬酸络合法制备钙钛矿型复合氧化物LaCoO3 ,以荧光汞灯和太阳光为光源对各种不同的水溶性染料进行光催化降解实验 .结果表明 ,钙钛矿型复合氧化物LaCoO3 具有很好的光催化活性 ,根据X射线光电子能谱和光声光谱分析得知 ,LaCoO3 的光催化活性主要与Co3 + 的d电子结构。
基金
NationalNaturalScienceFoundationofChina (No .59772 0 1 9)
