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摘要钙钛矿型钛酸盐纳米材料具有优异的化学稳定性和光学性能，由于我国对钛酸盐纳米材料的研究相比于发达国家还很薄弱，这与我国这样一个钛资源大国极不相称，因此对钛酸盐功能材料的开发研究显得极为迫切和重要。所以本课题拟采用离子交换-水热法和溶胶-凝胶法制备出具有高活性的一系列碱土金属和过渡金属层状钛酸盐纳米颗粒，通过使用XRD、SEM、TEM等表征手段，制备出了具有特殊集合形貌的钛酸盐纳米材料。并通过光催化讲解有机污染物，探讨制备的钛酸盐纳米材料的光催化性能。实验结果表明：离子交换-水热法具有简单温和的特点，可以推广值被过渡金属（Fe、Co、Ni等）钛酸盐纳米材料。以MCl2（M=Mg、Ca、Sr；Fe（II）、Co（II）、Ni、Zn等）作为M源，P25作为钛源。离子交换-水热法为继续开发具有较高光催化活性的钙钛矿型层状钛酸盐提供指导依据。33416
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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