Nanomaterials Research Institute, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, People's Republic of China.
Nanotechnology. 2010 Jan 22;21(3):035606. doi: 10.1088/0957-4484/21/3/035606.
Sb(2)Se(3) submicron tetragonal tubes have been prepared by a microwave-assisted polyol method using antimony trichloride and sodium selenite as the Sb and Se precursors. Scanning electron microscopy (SEM) results showed a novel transformation of Sb(2)Se(3) microstructures from submicron tubes to submicron spheres during the microwave heating process. The potential growth mechanism has been investigated by analyzing the samples at different growth stages. Transmission electron microscopy (TEM) analyses confirmed that samples prepared under 10 min microwave heating possessed tetragonal tubular structure with lengths in the range of 10-30 microm, thicknesses in the range of 0.5-1 microm and wall thicknesses in the range of 100-200 nm. High-resolution TEM (HRTEM) and selected area electron diffraction (SAED) results revealed that Sb(2)Se(3) submicron tubes were single-crystalline along the [001] direction. The optical properties of Sb(2)Se(3) submicron tubes and submicron spheres were characterized by UV-vis diffuse reflectance spectroscopy, and the band gap (E(g)) derived to be 1.161 and 1.173 eV, respectively.
采用微波辅助多元醇法，以三氯化锑和亚硒酸钠为 Sb 和 Se 前体，制备了 Sb 2 Se 3 亚微米四方管状结构。扫描电子显微镜（SEM）结果表明，在微波加热过程中，Sb 2 Se 3 微结构从亚微米管到亚微米球的新颖转变。通过分析不同生长阶段的样品，研究了潜在的生长机制。透射电子显微镜（TEM）分析证实，在 10 分钟微波加热下制备的样品具有长度在 10-30 微米范围内、厚度在 0.5-1 微米范围内和壁厚在 100-200 纳米范围内的四方管状结构。高分辨率 TEM（HRTEM）和选区电子衍射（SAED）结果表明，Sb 2 Se 3 亚微米管沿[001]方向为单晶。通过紫外-可见漫反射光谱对 Sb 2 Se 3 亚微米管和亚微米球的光学性质进行了表征，得出的能带隙（E（g））分别为 1.161 和 1.173 eV。
