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 we...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.展开更多
文摘用柠檬酸法合成了钙钛矿型复合氧化物 La Fe O3,并按不同比例进行掺杂 ,制备了L a1-x Srx Fe O3( x=0 .0 1、0 .0 2、0 .0 3、0 .0 4、0 .0 5) .以荧光汞灯为光源测定了样品对不同染料的光催化降解活性 ,根据红外、紫外、光声光谱等技术对催化剂的分析结果 ,讨论了光催化性能及掺杂Sr2 +对其活性的影响 ,结果表明 ,掺杂后 L a Fe
基金NationalNaturalScienceFoundationofChina (No .59772 0 1 9)
文摘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.
