Synthesis of Hollow Sphere CdSe from CdCl2 Aqueous Solution Containing Ethylenediamine
Cadmium selenide (CdSe) of hollow sphere with 30-50nm in diameter have been prepared form the mixed solution of cadmium chloride (CdCl2), sodium selenosulfate(Na2SeSO3) and ethylenediamine (H2NCH2CH2NH2) at room temperature. The hollow sphere of CdSe was characterized by transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The molar ratio of EDA to Cd2+ ions in this system was important factor on controlled synthesis in the self-encapsulated morphology. Based on the observation on morphological difference with molar ratio of EDA to Cd2+ ion, the possible mechanism for the formation of CdSe hollow sphere was discussed.
Wei Pan and Jianghong Gong
M. H. Choi et al., "Synthesis of Hollow Sphere CdSe from CdCl2 Aqueous Solution Containing Ethylenediamine", Key Engineering Materials, Vols. 336-338, pp. 2037-2040, 2007