羟基氧化镓超分支纳米晶体的制备及生长机制

Preparation and Growth Mechanism of Gallium Oxyhydroxide Hyperbranched Nanoarchitectures

以无水氯化镓的苯饱和溶液和甲醇为初始原料,在反应釜中进行醇解反应,并采用X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）分析样品的形貌、成分和结构.结果表明：羟基氧化镓粉体为分散性良好的纳米刷,长度约为2~6μm;在超分支麦穗状羟基氧化镓纳米结构形成过程中,晶体劈裂生长机制起主导作用.

Hyperbranchedα-GaOOH nanocrystals with a sheaf-like morphology have been prepared via the alcoholysis process with GaCl3 and methanol as the reactants in the presence of benzene as solvent in an autoclave.XRD patterns strongly indicate that the synthesized sample wasα-GaOOH.SEM and TEM images indicate that the product was composed of hyperbranchedα-GaOOH nanocrystals.For the formation ofα-GaOOH hierarchical nanoarchitectures,the crystal splitting growth mechanism plays a dominant role,which has been evidenced by the characterization of the time-dependent morphologies of the prepared samples.