| Electrical Properties and Enhance of photocatalytic activity of TiO2 nanorods doped with aluminum oxide |
| Paper ID : 1070-UFGNSM-FULL |
| Authors: |
|
Mehran Riazian * Department of Engineering, Tonekabon branch, Islamic Azad University, Tonekabon, Iran |
| Abstract: |
| In present work, Synthesis of TiO2 nanorods in anatase, rutile and Ti8O15 phases, TiO2 nanorods embedded with aluminum oxide as dopant by using the sol-gel method and alkaline corrosion are reported. The morphologies, crystal structures and electrical properties of TiO2 nanorods are characterized by use of field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), tunneling electron microscopy (TEM), X-ray diffractometer (XRD), UV-vis. Spectrophotometer and furrier transmission create infrared absorption (FT-IR) techniques. Degradation rate of methylen blue (MB) in its aqueous solution under UV irradiation is investigated as an amount of photocatalytic activity. The addition of aluminum oxide to the TiO2 matrix (as a dopant) enhances the photocatalytic activity due to thermal stability and increasing in the surface area. Dependence between photocatalytic activity and calcination temperature is determined. Dielectric constant, capacity, quality factor and resistance is measured by GPS 132 A technique. Moreover, the effects of aluminum oxide dopant and calcination temperatures on surface topography, crystallization of phases, dielectric constant, electrical resistance, lattice strain and activation energy of nanoparticles formation are studied. The obtained results show that Al2O3-doped TiO2 nanorods have higher dielectric constant, higher photocatalytic activity, less leakage current, less roughness surface, less lattice strain and higher thermal stability. Thus this nanorods have the potential to be a good candidate as a gate dielectric material for the future of FETs. |
| Keywords: |
| Photocatalytic activity, Dielectric,Structure, Nanorods, TiO2, aluminum oxide dopant, Sol-Gel |
| Status : Paper Accepted (Poster Presentation) |
