Characterizations of Fe2O3/TiO2 composites fabricated from titanium slag

Thiet Dinh Mac, Thi Anh Thi Nguyen, Thieu Duc Nguyen, Thinh Duc Nham, Hai Viet Phung, Xuan Thanh Phan, Tien Minh Ngo, Chinh Van Tran

Abstract


In this study, Fe2O3/TiO2 composites were successfully fabricated by a simple approach for treating titanium slag with dilute sulfuric acid, followed by a ball-milling process and calcination at a temperature of 400-800 oC in air. The resultant Fe2O3/TiO2 composites were characterized by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), the N2 adsorption-desorption isotherm, and UV–vis diffuse reflectance spectroscopy. The effects of the concentration of sulfuric acid and the calcinated temperature on the formation of the Fe2O3/TiO2 composites were investigated in detail. The obtained Fe2O3/TiO2 composite has a BET surface area, energy bandgap, and pH point of zero charge of 76.65 m2/g, 2,09 eV, and 8,45, respectively. Therefore, this as-prepared Fe2O3/TiO2 composite could be a promising and cost-effective adsorbent for the effective removal of heavy metals and photodegradation of dyes from an aqueous environment.


Keywords


Fe2O3/TiO2; mixed oxide; titanium slag; composites

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DOI: https://doi.org/10.51316/jca.2023.051

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