The solid products were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffractrometry (XRD).
FTIR: The infrared spectra were measured on Bruker model Tensor 27 with KBr preparation. The spectra were collected over the range of wavenumber 4,000-400 cm–1 with 16 scanning and resolution at 4 cm–1
SEM: The morphology and aggregate of particles were examined by JEOL model JEM-6335.
XRD: The structures of samples were identified by using XRD pattern on Siemems model D-500.