层状MTiO3纳米材料的制备及其复合材料的催化性能研究
关键词 钙钛矿 钛酸盐 离子交换-水热法 光催化
毕业论文设计说明书外文摘要
Title The preparation of layered MTiO3 and the research
of their composite catalytic performances
Abstract
Perovskite titanate nanomaterials have excellent chemical stability and optical performance. For the study of titanate nanomaterials in our country is still very weak when compared to developed countries, which does not match the abundant titanium resources in our country. The development of the functional materials with titanate becomes extremely urgent and important. A series of transition metal and alkaline earth metal layer titanate nanoparticles with highly activity were synthesized by the ion exchange-hydrothermal method and sol-gel method. Titanate nano materials with special collection morphology were prepared by using the characterization methods such as XRD,SEM, TEM. And the photocatalytic properties of titanate nanomaterials were discussed through photocatalytic degradation on organic pollutants. The experimental results indicate that the ion exchange-hydrothermal method is simple and gentle and can be promoted to transition metal(Fe, Co, Ni, etc) titanate nano materials. Take MCl2(M=Mg, Ca, Sr; Fe(II),Co(II),Ni, Zn, etc) as the source of M and P25 as the source of titanium, the ion exchange-hydrothermal method provides a directional basis for continuing to develop perovskite layer titanate with high photocatalytic activity.
Keywords perovskite titanate ion exchange-hydrothermal photocatalytic
目 次
1 引言 1
1.1 钛酸盐的研究现状 1
1.1.1 纳米材料的研究现状 3
1.1.2 光催化的研究现状 3
1.2 钛酸盐的合成方法 4
1.2.1 沉淀法 4
1.2.2 溶胶-凝胶法 5
1.2.3 离子交换-水热法 5
1.3 钛酸盐的性能与应用 6
2 实验部分 8
2.1 实验药品 8
2.2 实验仪器 8
2.3 MTiO3纳米材料的合成 9
2.3.1 离子交换-水热法 9
2.3.2 溶胶-凝胶法 10
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