Preparation of hollow CdSe nanospheres

摘要

Cadmium selenide (CdSe) hollow nanospheres (approximately 40-50 nm) have been successfully synthesized by gamma-irradiating polyacrylamide (PAM) hydrogel template which contains CdCl_2 and Na_2SeO_3 aqueous solution at room temperature. The nanospheres were characterized by energy dispersive spectrum (EDS), field emission scanning electron micrograph (FESEM), transmission electron microscopy (TEM) and high-resolution transmission electron micrograph (HRTEM), respectively. EDS showed that nanospheres were composed of Cd and Se (atomic ratio, 1.15:1). A possible formation mechanism of CdSe hollow nanospheres through two-steps was presented.