<span style="font-size:14.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:Fd1596850-Identity-H; color:black;mso-ansi-language:EN-IN;mso-fareast-language:EN-IN;mso-bidi-language: HI" lang="EN-IN">Preparation of Fe³⁺ -doped TiO₂ nanoparticles and their photocatalytic activities</span>

Abstract

Taking ferric nitrate as the precursor, Fe³⁺ -doped TiO₂ nanoparticles have been prepared through the acid-catalyzed sol-gel method. The characteristics of obtained Fe³⁺ -doped TiO₂ nanoparticles have been studied by XRD and TEM techniques. Illuminated with 450w high press mercury lamp (HPML) and natural sun light (NSL), photocatalytic oxidation of Acridine Orange (AO) has been investigated in the presence of the Fe³⁺-doped TiO₂ nanoparticles whose photocatalytic activities have been evaluated. It is found that photocatalytic reactions obey first-order kinetics. TiO₂ doped with 0.10% Fe³⁺ shows higher photoactivity. In the presence of 0.10% Fe³⁺-doped TiO₂ nanoparticles, decolorization rate and degradation rate of AO are up to 92.32%, 97.00% respectively with HPML illumination and up to 95.50%, 97.75% respectively with NSL illumination. Fe3+-doped TiO₂ nanoparticlcs provide a new approach for improving the photocatalytic efficiency of TiO₂.