Zheng Xiuwen, Zhu Liying, Yan Aihui, Bai Chuannan, Xie Yi
Structure Research Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
Ultrason Sonochem. 2004 Apr;11(2):83-8. doi: 10.1016/S1350-4177(03)00137-8.
A simple ultrasound-assisted cracking process was applied to prepare high-crystallinity MoS2 nanorods using MoS2 micron particles as raw materials. The products were characterized by various techniques, including XRD, SEM, TEM and HRTEM. Systematic studies showed that acid treatment and ultrasound irradiation are both prerequisites for the preparation of ideal MoS2 nanorods. TEM images indicate that these nanorods have uniform morphology, with an average diameter of approximately 150 nm and length up to several microm. Based on the controlled experiments and observation on morphological changes, it is proposed that the activated layered MoS2 first exfoliate into sheets and further crack into smaller nanorods due to the strong mechanical agitation, shear forces, and micro-jets created by the ultrasound irradiation.
采用一种简单的超声辅助裂解工艺，以二硫化钼微米颗粒为原料制备高结晶度的二硫化钼纳米棒。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和高分辨率透射电子显微镜（HRTEM）等多种技术对产物进行了表征。系统研究表明，酸处理和超声辐照都是制备理想二硫化钼纳米棒的前提条件。透射电子显微镜图像表明，这些纳米棒形态均匀，平均直径约为150纳米，长度可达几微米。基于对照实验和对形态变化的观察，提出活化的层状二硫化钼首先剥落成片，然后由于超声辐照产生的强烈机械搅拌、剪切力和微射流而进一步裂解成更小的纳米棒。
