氧化铟八面体、纳米带、锯齿状纳米线和纳米链的可控合成  

Controlled Synthesis of Octahedrons, Nanobelts, Dentate Nanowires and Nanocrystal Chains of In_2O_3

作　　者：董红星[1] 杨合情[1] 尹文艳[1] 杨文玉[1] 王林芳[1] 

机构地区：[1]陕西师范大学化学与材料科学学院大分子科学陕西省重点实验室,西安710062

出　　处：《化学学报》2007年第22期2611-2617,共7页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20573072);教育部博士点基金(No.20060718010)资助项目.

摘　　要：在N2/H2O混合气流中将硅片上金覆盖的金属铟颗粒加热到800℃制备出了不同形貌的In2O3纳米结构,在距铟源不同距离处依次得到In2O3的八面体、纳米带、锯齿状纳米线和纳米链.采用拉曼光谱、扫描电镜、X射线衍射和透射电镜对产物进行了表征分析.结果表明,八面体、纳米带、锯齿状纳米线和纳米链均为立方相单晶结构的In2O3.基于气-固和气-液-固生长机理详细分析了八面体、纳米带、锯齿状纳米线和纳米链的生长过程,提出了不同形貌In2O3纳米结构的生长模式.Indium oxide nanostructures with different morphologies have been synthesized on the surface of Si substrates by heating indium grains coated with an Au layer on the Si foils at 800 ℃ under the flow of a gas mixture of N2/H2O. Otahedrons, nanobelts, dentate nanowires, and nanocrystal chains of In2O3 were grown in the different regions of the Si substrates. The as-synthesized products were characterized by means of Raman spectra, X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The results showed that the octahedrons, nanobelts, dentate nanowires and nanocrystal chains of In2O3 are single crystalline phase with the body-center cubic structure. The growth process of octahedrons, nanobelts, dentate nanowires and nanocrystal chains of In2O3 was analyzed in detail according to vapor-solid and vapor-liquid-solid mechanisms, and the growth models of these nanostructures with different morphologies were proposed.

关 键 词：IN2O3 八面体 锯齿状纳米线 纳米链 可控合成 

分 类 号：TB383.1[一般工业技术—材料科学与工程]