用草酸盐共沉淀法 ,结合不同干燥条件 ,得到了氧空位较多的纳米晶 La Co O3钙钛矿。用正电子湮没寿命谱研究了氧空位较多的纳米晶 La Co O3催化剂的界面结构。结果表明 :纳米晶 La Co O3的聚集体微结构主要由两部分组成——含有氧空位...用草酸盐共沉淀法 ,结合不同干燥条件 ,得到了氧空位较多的纳米晶 La Co O3钙钛矿。用正电子湮没寿命谱研究了氧空位较多的纳米晶 La Co O3催化剂的界面结构。结果表明 :纳米晶 La Co O3的聚集体微结构主要由两部分组成——含有氧空位的结晶晶粒以及晶界表面 ,基本上不存在由多个晶粒围成的大孔穴。不同的干燥条件可制备得到不同晶粒度和不同大小氧空位的 La Co展开更多
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
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
文摘用草酸盐共沉淀法 ,结合不同干燥条件 ,得到了氧空位较多的纳米晶 La Co O3钙钛矿。用正电子湮没寿命谱研究了氧空位较多的纳米晶 La Co O3催化剂的界面结构。结果表明 :纳米晶 La Co O3的聚集体微结构主要由两部分组成——含有氧空位的结晶晶粒以及晶界表面 ,基本上不存在由多个晶粒围成的大孔穴。不同的干燥条件可制备得到不同晶粒度和不同大小氧空位的 La Co
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.
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.
