Morphological Control Of Nano - Tio <sub> 2 </ Sub> And Synthetic Mechanisms

A novel and facile low temperature controlled synthesis strategy was demonstratedfor the design and synthesis of one-dimensional TiO2 nanorods using rod-like reversemicelle released in situ as the soft template in the non-aqueous media. There are twoparts in this thesis, in the first section, uniform anatase TiO2 nanorods have beensuccessfully synthesized through soft template method in excessive oleic acid, usingTi(OBu)4 as the organic precursor and rod-like reverse micelle ofC17H33COONH(CH3)3 as soft template. In the second section, the obtained sampleswere characterized in detail by XRD,FT-IR,TEM,TG-DTA. The results imply that thepresent TiO2 nanorod with 3～4nm in diameter and 10～20nm in length, at the same time,the formation of TiO2 nanorod with a preferred growth orientation along the c-axis ofthe anatase lattice. Through the completed and detail analyse, the formation mechanismof TiO2 nanorod will be summarized as follows:(1) The rodlike reverse micelle as soft temple could prepared successful lowtemperature because of the presence of oleic acid and trimethylamine. The reversemicelle temple and selective absorb of amine group are the key factors for formation ofanatase TiO2 nanorods.(2) When the absence of trimethylamine, TiO2 nanosphere will be produced insphere-like reverse micelle.