Synthesis and spectral properties of starch capped CdS nanoparticles in aqueous solution
Rodriguez, Patricia; Muņoz, Narciso; Gonzalez de la Cruz, Gerardo; San Martin Martinez, Eduardo; Tomas, Sergio A.; Zelaya Angel, Orlando Mexico
Semiconductor nanoparticles have been investigated over the past years due to their specific optic, electronic and catalytic properties. These properties emerge from the high surface-to-volume ratio present in nanoparticles. Synthesis of cadmium sulphide nanoparticles has been carried out in aqueous solution precipitation. Starch added during the synthesis of the nanoparticles results in cadmium-rich nanoparticles forming stable complex with starch. The morphology and the crystalline structure were measured by transmission electron microscopy (TEM) and x-ray diffraction (XRD), respectively. The grain size of the particles obtained from these experiments correlates well with Raman scattering and optical absorption spectroscopy.