Structural Morphological and Optoelectronic Study of Titania and Gold Doped Titania Nanoparticles Grown by Sol-Gel Technique

摘要

Here in this work, the titania (TiO_2), gold ion doped titania (Au~(+3) TiO_2) and gold nanoparticles doped titania (Au NPs TiO_2) have been prepared by sol-gel technique. In a typical synthesis titanium tetrachloride (TiCl_4) is treated with citric acid in presence of methanol as solvents, forms titanium citrate complex sol at 40°C. This sol forms a viscous gel after 2 h of stirring and heating at 60 °C. The pre-synthesized Au~(+3) ions and Au NPs were then added drop wise to the titanium citrate complex sol to form gold ion doped titania (Au~(+3) TiO_2) and gold nanoparticles doped titania. The products obtained were calcined at 700 °C. The obtained particles were studied for their structural, morphological, optical and electrical properties.