单质铟在空气中原位热氧化合成氧化铟纳米锥  

In-situ growth of In_2O_3 nanocones on the surface of indium substrates through thermal oxidation of indium in air

作　　者：王勇[1,2] 尹文艳[1,2] 董红星[1,2] 杨文玉[1,2] 王明珍[1,2] 杨合情[1,2] 

机构地区：[1]陕西省大分子科学重点实验室 [2]陕西师范大学化学与材料科学学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2007年第4期66-70,共5页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(20573072);教育部博士点基金资助项目(20060718010)

摘　　要：以Au作催化剂，将金属铟在空气中加热到900-1000℃，在单质铟表面制备出In2103纳米锥．纳米锥的直径随着加热时间的延长和反应温度的升高而增加．采用拉曼光谱、扫描电镜和透射电子显微镜对产物进行了表征分析．结果表明，产物为立方相单晶结构的In2O3纳米锥，其直径和高度分别在0．08～0．7μm和0、5～3．1μm范围可调，且金作为催化剂在纳米锥的生长过程中起了非常重要的作用．基于此研究结果。In2O3 nanocones have been in-situ grown on the surface of indium substrates by heating indium grains coated with an Au film at 900-1000 ℃ in air. The diameters of In2O3 nanocones are increased by increasing the heating temperature and time. The synthesized products were characterized by means of Raman spectroscopy, scanning electron microscopy and transmission electron microscopy. The results show that the In2O3 nanocones are single crystalline phase with the body-center cubic structure, and have a controllable diameter and length in the range of 0.08-0.7 μm and 0.5 - 3.1μm, respectively, and Au plays a key role in the growth of In2O3 nanocones. A possible mechanism was also proposed to account for the formation of In2O3 nanocones.

关 键 词：IN2O3 纳米锥 原位热氧化法 合成 

分 类 号：TB383[一般工业技术—材料科学与工程]