| Cadmium sulfide (CdS) is one of the most classical direct band gap â…¡-â…¥ semiconductors, and the CdS nanomaterials have important potential applications in light-emitting diodes, solar cell, photocatalyst, and diagnostic agents in medicine. At present, CdS nanometerials with various shapes which can be controlled synthesized are imperative and desirable to develop.1. Hexagonal CdS nanowires were synthesized by a solvothermal method in ethylenediamine, and CdS nanowires are of single crystals with a preferential growth direction of (001). According to the experiments, the mechanism of the growth of CdS nanowires has been discussed.2. Micro scale CdS rod-spheres with hexagonal wurtzite structure were synthesized by a solvothermal method using ethylenediamine and distilled water as mixed solvent. Studies suggest that the ratio of ethylenediamine and distilled water in the mixed solution is the key facter in the fabrication of Micro scale CdS rod-spheres.3. Well-defined CdS nanorings with flowerlike morphology were synthesized by a hydrothermal method using polyvinyl pyrrolidone (PVP) as capping agent. The amount of PVP and the reaction time are the important factors in the fabrication of CdS nanorings. On the basis of these experiments, the possible growth mechanism of the CdS nanorings is put forward.4. Ramose CdS nanomaterials were synthesized by a hydrothermal method using polyethylene glycol (PEG) as capping agent. The Sulfur source and PEG are the important factors in the fabrication of Ramose CdS nanomaterials. |
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