Synthesis and characterization of CdSe nanorods using a novel microemulsion method at moderate temperature.
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 degrees C) method for synthesizing rodlike CdSe, hence reducing the possibility of oxidation of this chalcogenide compound.
Xi
L F
LF
Department of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Lam
Y M
YM
D019187:Cadmium Compounds / Q000737:chemistry*; D004143:Dioctyl Sulfosuccinic Acid / Q000737:chemistry; D004655:Emulsions / Q000737:chemistry; D006834:Hydrazines / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D018036:Selenium Compounds / Q000737:chemistry*; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature
D019187:Cadmium Compounds; D004655:Emulsions; D006834:Hydrazines; D018036:Selenium Compounds; D013501:Surface-Active Agents; D004143:Dioctyl Sulfosuccinic Acid; C029424:hydrazine; C058667:cadmium selenide