TiO2 one-dimensional (1D) nanostructures such as nanowires and nanoribbons were synthesized by direct heating of Ni-coated TiO powders in argon at 850-920 degrees C and similar to 760 Torr in a tube furnace. The nanostructures were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive x-ray spectroscopy and Raman spectroscopy. The 1D nanostructures were found to be single-crystalline rutile TiO2. The preferred growth direction is along the [ 110] direction. The nanowires are roughly similar to 10-50 nm in diameter, and 5-20 mu m in length. The nanoribbons are 0.4-2 mu m in width and 5-20 mu m in length. The growth of nanostructures under different conditions of substrate, catalytic material, reaction gas environment and chemical composition of solid TixOy precursor was studied. The possible growth mechanisms are discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据