Abstract
CdSe nanoparticles have been successfully synthesized using a novel microemulsion method at moderate temperature. It is found that with a combination of the surfactant AOT and hydrazine hydrate, it is possible to control the morphology of the nanoparticles. The hydrazine hydrate acts as both a reducing agent and a templating agent that favors the formation of a rodlike structure. The composition, morphology and optical properties of the CdSe nanoparticles were investigated using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) absorption spectroscopy, photoluminescence (PL) spectroscopy, energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared (FT-IR) spectroscopy. The nucleation and growth mechanism for this system is also proposed based on a time-dependent study. This synthesis route provides a moderate temperature (100 °C) method for synthesizing rodlike CdSe, hence reducing the possibility of oxidation of this chalcogenide compound.
| Original language | English |
|---|---|
| Pages (from-to) | 771-778 |
| Number of pages | 8 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 316 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Dec 15 2007 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Surfaces, Coatings and Films
- Colloid and Surface Chemistry
Keywords
- Chalcogenide compound
- Colloidal method
- Hydrazine hydrate
- Nanoparticles
- Surfactant