Morphology development of CdS/PVAc composite from spheres to rods

CdS/poly(vinyl acetate) (PVAc) composite was prepared by a hydrothermal polymerization and simultaneous sulfidation (HPSS) process. X-ray diffraction and transmission electron microscopy were used to characterize the products and study the morphology development. Composite spheres were prepared in the early stage of the process. Then the spheres stick with each other to form peanut-shaped morphology. Finally, composite rods are fully developed from the composite spheres. Fourier transform infrared spectroscopy was used to characterize the PVAc in the composite. Ultra violet–visible spectra were also recorded and the analysis suggests that the as-prepared CdS in the composite are quantum sized.