The effects of Graphite and CNTs doping on TiO2 properties in anatase phase

In this research, we synthesized titanium dioxide (TiO2) nanoparticles by sol-gel method, and doped with different percentages (0.2%wt and 0.5%wt) of graphite and carbon nanotubes (CNTs). The X-ray diffraction analysis of the samples showed the formation of anatase phase of pure and doped TiO2 samples. We checked the morphology and grains size of the samples by using FESEM analysis we measured the grain size, which was reduced from 65 nm to 42 nm by doping. The electrical properties of the samples have investigated by LCR meter and measured the capacitance, energy dissipation and conductivity of the samples. The results of the electrical measurements showed that the conductivity of the samples increased from 58.51(Ωm)-1(*10-12) to 67.52 (Ωm)-1(*10-12) with doping. We used UV-Vis and FT-IR analysis to investigate optical properties of the samples. We found that CNTs doped samples have more conductivity and smaller grain size than graphite doped samples