Influence of Calcination Temperature towards Fe-TiO₂ for Visible-Driven Photocatalyst

Abstract

TiO2 is one of the most promising photocatalysts that is widely used for environmental clean-up due to its ability to degrade organic pollutants in air or water. The purpose of this study is to enhance the photocatalytic activity of TiO2 by absorbing energy in visible light region in order to degrade pollutants. In this study, the nanostructured Fe-TiO2 was successfully synthesised via a combined method of sol-gel and calcination process. The calcination temperatures used varied from 400 to 800 °C. The as-prepared samples were characterized by X-ray diffraction (XRD), FESEM and UV-Vis spectroscopy (UV-Vis). XRD results show that the phases of TiO2 are dependent on calcination temperature. It is found that both TiO2 and Fe-TiO2 phases were transformed from anatase to rutile as the temperatures were increased. FESEM images revealed that the particle size was agglomerated and the average grain size was about 54 to 66 nm. UV-Vis analysis indicated that the incorporation of Fe and varied calcination temperature may affect the optical properties as the absorption profile was shifted from 445 nm to 585 nm. Thus, this results show that Fe-TiO2 is a highly potential photocatalyst to degrade pollutants under visible light irradiation.

Preparation of TiO₂ Decorated Eggshell Membrane for Photocatalytic Dye Degradation

“…The photocatalytic activity of the prepared composite was evaluated by monitoring the degradation of methyl orange (MO) aqueous solution under visible light irradiation in accordance with our previous work [9,11]. Precisely 0.05 g of catalyst powder was dispersed into 100 mL of MO solution (10 ppm) for each experiment.…”

“…Therefore, various works have been conducted in order to tune TiO2 to overcome these disadvantages. It is reported that loading TiO2 on various inert substrates using such as metal and non-metal ion can improve the wavelength and adsorptive ability [11][12][13]. Pant et al reported immobilized TiO2 in carbon nanostructures offers new opportunities to develop nanocomposite with unusual electronic catalytic properties [14][15][16].…”

Comparative Study of Fe,N-TiO₂ Photocatalysts under UV Light Irradiation

“…Doping is a practical approach among all the modifications. Iron (Fe) and Nitrogen (N) are the effective dopants for modification of the optical and photo-electrochemical properties of TiO2 [11,12].…”

Effect of Transition Metal Dopant on the Electrical Properties of ZnO-TiO2 Films Prepared by PLD Technique

“…(TiO 2 ) powder is commonly known to be one of the major semiconductor substances [8]. (TiO 2 ) material possesses high chemical stability, non-toxicity and fairly high visible spectrum transmittance [9]. (TiO 2 ) however has a high recombination rate in solar cells which decreases its efficiency [10].…”