Abstract
Size tuneable cadmium sulphide nanoparticles of a few nanometres in size were prepared by thermolysis of a single source precursor of cadmium xanthates with variable carbon chain length (Cd(ROCS2)2, where R denotes -C2H5, -C4H9, -C 8H17 and -C12H25, respectively) in an ammonia solution. The particle size, morphology and crystallinity of these nanoparticles were characterized using X-ray powder diffractometry, transmission electron microscopy, and nitrogen adsorption/desorption techniques. The results show that hexagonal CdS nanoparticles can be produced by thermolysis of cadmium alkyl xanthate in an ammonia solution at a temperature as low as 100 °C. The size of CdS particles (between 5.60 nm and 3.71 nm) decreases with increasing length of carbon chain in the precursor, as further confirmed by UV-visible and fluorescence spectrophotometric measurements. The size tuning mechanism of CdS from cadmium alkyl xanthate is also discussed. © 2011 Elsevier Ltd. All rights reserved.
Original language | English |
---|---|
Pages (from-to) | 2266-2270 |
Number of pages | 4 |
Journal | Materials Research Bulletin |
Volume | 46 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2011 |
Keywords
- A. Inorganic compound
- A. Optical materials
- A. Semiconductors
- B. Chemical synthesis
- D. Optical properties