中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 22 Special 1 October 2012 |
（1. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China;
2. Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China;
3. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China）
Abstract:Hierarchical hollow spherical CdS nanostructures were synthesized via a simple microwave hydrothermal(M-H) process using CdCl2·H2O and Na2S2O3·5H2O as raw materials and adding ethylenediaminetetraacetic acid (EDTA) as template. The obtained products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), and high-resolution transmission electron microscopy (HRTEM). Ultraviolet-visible (UV-vis) spectroscopy was used to study the optical properties of CdS. The results demonstrate that the hierarchical hollow spherical CdS with a diameter range of 400−600 nm is self-assembled by nanoparticles of 30 nm and in a wurtzite structure. EDTA and microwave play an important role on the formation of the hollow hierarchical morphology. The effect of the microwave and possible growth mechanism were discussed. UV-vis spectroscopy indicates that the CdS crystallites could be used as a potential blue light emitting material.
Key words: CdS; microwave hydrothermal method; hierarchical hollow sphere; optical property
