Synthesis and Control of Oxide Nanoparticle Formation Process from Amine Complex with Dialysis Process and Formation of Integrated Structure.

价态可控的TiO_2纳米粒子和ZnO纳米粒子可用作透明导电材料和紫外线屏蔽材料。它们还表现出光催化活性。为了改善这些特性，控制烧结体和薄膜中晶粒的取向是一个重要的问题。本研究采用溶液法结合低温加热法制备了价态可控的纳米TiO_2和纳米ZnO。此外，纳米颗粒形成过程在纤维素管中进行。采用纤维素管透析法，通过透析过程减少了杂质离子的生成和生长，从而获得了在水溶液中稳定分散的氧化物纳米粒子，而且，通过简单的包覆过程，可以容易地获得片状的Nb5+掺杂钛酸纳米粒子，并在基体上形成高度取向的Nb5+掺杂TiO2。

Valence controlled TiO_2 nanoparticles and ZnO nanoparticles can be used as transparent electroconductive materials and UV shielding materials. They also show photocatalytic activity. In order to improve these characteristics, it is important issue to control orientation of the crystallites in sintered compacts and thin films. Stable dispersion of the oxide nanoparticles in solution is essentially important to obtain uniform thins films.In this study, valence controlled TiO_2 nanoparticles and ZnO nanoparticles were prepared by solution process with low temperature heating process. Furthermore, the nanoparticle formation process was carried out in a cellulose tube. The dialysis processes with cellulose tube enabled to obtain the oxide nanoparticles with stable dispersion in a aqueous solution since the formation and growth process was occurred with reducing the impurity ions by dialysis process.Furthermore, the nanosheet particles of Nb^<5+> - doped titanic acid was easily obtained and the highly oriented Nb5+ - doped TiO_2 was formed by only coating process on substrate.