| Abstract: | A simple and convenient method, free of template, has been proposed to synthesize hollow carambolashaped Ag_2 S microspheres with Ag NO3, thiourea(TU), Na Cl and diethanolamine as reagents using a microwave-assisted method, at low temperatures of below 100 8C. Powder X-ray diffraction(XRD),scanning electron microscopy(FESEM) and high resolution transmission electron microscopy(HRTEM)were employed to characterize the morphology and composition of those microspheres. The results indicated that the hollow carambola-shaped silver sulfide microspheres(with high purity and homogeneous morphology) were prepared by an Ostwald ripening process. A possible formation mechanism of hollow carambola-shaped Ag2 S microspheres was proposed. |
