Author/Authors :
Safari، Mojtaba نويسنده Department Of Chemical Engineering, Amirkabir University Of Technology, Tehran, Iran , , Talebi، Rasoul نويسنده Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran , , Rostami، Mohammad Hossein نويسنده 1Department Of Chemical Engineering, Amirkabir University Of Technology, Tehran, Iran , , Nikazar، Manouchehr نويسنده , , Dadvar، Mitra نويسنده Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran ,
Abstract :
In this study the optimum conditions for preparing the iron-doped TiO2 nanoparticles were investigated. Samples
were synthesized by sol–gel impregnation method. Three effective parameters were optimized using Taguchi
method, consisted of: (i) atomic ratios of Fe to Ti; (ii) sintering temperature; (iii) sintering time. The characterization
of samples was determined using X-ray diffraction, BET- specific surface area, UV- Vis reflectance spectra (DRS) and
scanning electron microscope (SEM). The XRD patterns of the samples indicated the existence of anatase crystal
phase in structure. UV- Vis reflectance spectra showed an enhancement in light absorbance in the visible region
(wavelength > 400 nm) for iron-doped samples. The photocatalytic activity of samples was investigated by the
degradation of RO 16 (RO 16) dye under UV irradiation. The results illustrated that the photocatalytic activity of
iron-doped TiO2 wasmore than pure TiO2, because of the smaller crystal size, grater BET surface area and higher light
absorption ability.
