Synthesis and characterization of dye-doped TiO2-SiO2 core-shell composite microspheres
作者： Naresh Dhiman , Bhanu P Singh , Arvind K Gathania
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摘要: RhodamineB (RB) dye-doped TiO2-SiO2 core-shell composite microspheres were synthesized by a chemical method from the hydrolysis of titanium tetrachloride (TiCl4). The morphology and bonding information material was investigated transmission electron microscopy (TEM), scanning (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR). TEM SEM images illustrate that are spherical in shape have nano-range thin coating TiO2 on surface SiO2. calcined at 400°C exhibit sharp XRD peaks anatase rutile crystalline phases TiO2. unit cell parameters calculated different peaks. FTIR spectrum confirms existence stretching modes (Si-O-Si Ti-O-Ti) microspheres. photocatalytic properties evaluated photo degradation K2Cr2O7 under ultraviolet-visible irradiation for as-synthesized an 850°C calcination temperature composite.
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