摘要:纳米TiO2作为一种新型的无机材料,因其特殊的光催化性质,受到了越来越多的关注。众所周知,形貌的不同会对纳米TiO2的光催化性能产生一定的影响。与纳米粒子相比,具有一定长径比的纳米结构具有更加优异的光催化性能。此外,助催化剂也能提升本体材料的光催化性能。在本课题的研究中,我们首先通过反胶束法制得了[Ni(N2H4)3]Cl2配合物纳米棒。然后以此为模板,利用溶胶-凝胶技术制备了具有核壳结构的NiO@TiO2纳米棒和Ni@TiO2纳米棒。使用X-射线衍射、透射电子显微镜、紫外-可见光谱对产物进行了表征。结果表明,所得到的产品为直径50 nm,长度1 um的纳米棒。在此基础上,进一步详细研究了反应时间、二乙胺的投料量、Ti4+/Ni2+的摩尔比、煅烧条件对样品光学性质的影响。最后,对Ni@TiO2纳米棒在光催化降解污染物和光催化制氢方面的应用进行了初探。6711
关键词: Ni@TiO2纳米棒;模板法;光催化
The Preparation and Properties Study of Ni@TiO2Nanorods
Abstract:As a new type of inorganic material, nanoTiO2 has drawn more and more attentions because of its special photocatalytic activities. Different morphologies will change the properties of nanoTiO2. Nanomaterials with aspect ratio are more powerful than the nanoparticles. Co-catalysts have the same effect in enhancing the photocatalytic activities. In this thesis, we first prepared the [Ni(N2H4)3]Cl2 nanorods by reverse micelles method. Secondly, prepared the core-shell structured Ni@TiO2 nanorods and NiO@TiO2 nanorods by sol-gel strategy by using [Ni(N2H4)3]Cl2 nanorods as the template. After characterization by X-Ray Diffraction, Transmission Electron Microscope and Ultraviolet-visible Spectroscopy, we find that the nanorods were 50 nm in diameter and 1 um in length. Finally, we change the reaction time, addition amount of diethylamine, mole ratio between Ti4+ and Ni2+ and the atomosphere of calcination before we study the photocatalystic properties of them.
KeyWords: Ni@TiO2Nanorods;Template;Photocatalytic