位置:成果数据库 > 期刊 > 期刊详情页
ABO3型钙钛矿结构的可见光光催化剂LaCo0.5Ti0.5O3的设计与合成
  • 期刊名称:高等学校化学学报, 2007, 28(3), 415-418. (SCI)
  • 时间:0
  • 分类:O614[理学—无机化学;理学—化学] O643.36[理学—物理化学;理学—化学]
  • 作者机构:[1]黑龙江大学化学化工与材料学院物理化学实验室,哈尔滨150080, [2]佳木斯大学化学与药学院,佳木斯154007
  • 相关基金:国家自然科学基金(批准号:20301006,20431030,20501007)、黑龙江省自然科学基金(批准号:ZJG04-04,B0305)和哈尔滨市青年科学基金(批准号:2005AFQXJ060)资助.
  • 相关项目:多孔钙钛矿型纳米材料的设计合成及光催化性能
中文摘要:

采用溶胶-凝胶法在较低温度条件下设计合成了新型的具有ABO3型钙钛矿结构的三元金属复合氧化物LaCo0.5Ti0.5O3.通过TG—DTA,XRD,XPS,UV—Vis DRS等测试技术和可见光光催化活性测试对其进行了表征.结果表明,与LaCoO3和La2Ti2O7相比,LaCo0.5Ti0.5O3样品表现出相对较高的可见光光催化活性,并且合成温度较低.这是由于原料中的Co^2+和Ti^4+离子通过电荷补偿作用使产物B位的两种金属均以+3价氧化态分布所致.

英文摘要:

A novel ternary metal complex oxide, LaCo0.5Ti0.5O3, with ABO3-type perovskite structure was designed and synthesized by a sol-gel method at relatively low temperature, and were characterized by means of several testing techniques such as TG-DTA, XRD, XPS and UV-Vis DRS spectra. The results show that, compared with LaCoO3 and La2Ti2O7, the as-prepared sample exhibits a higher photocatalytic activity under visible light irradiation, and can be obtained at lower temperature. It can be proposed that the charge compensation effects make Co^2+ and Ti^4+ ions in raw material co-occupy uniformly B site in perovskite both as the forms of + 3 valence, which is responsible for the lower temperature synthesis.

同期刊论文项目
同项目期刊论文