Synthesis and Structural Characterization of Ti-Doped ZnO Nanostructures
Titanium-doped Zinc oxide (Zn1-xTixO ; x = 0, 0.16, 0.22, 0.31, 0.48) nanoparticles have been synthesized by sol-gel method at 80°C and further annealed at 450°C in ambient environment. X-ray diffraction (XRD) and thermal gravimetric analysis (TGA) are carried out to study the stability and structural properties of the nanoparticles. The TGA shows a two-stage weight-loss for pure ZnO powder due to thermal decomposition of Zinc acetate dehydrate -resulting stable phase over 425°C. The XRD data shows that the synthesized ZnO nanoparticle is polycrystalline in nature with average crystallite size of ~ 6 nm and highly oriented in (101). The crystallinity and crystallite size of the ZnO nanoparticle decreases with increasing Ti-doping concentration. The crystallite size of the as-prepared nanoparticles with and without doping is significantly improved after annealing at 450°C.
Keywords - Sol-gel, Semiconductor, ZnO, XRD, TGA.