Abstract
In this study, titanium dioxide was synthesized via solution combustion method. Titanium(IV) oxysulfate was used as a titanium source. The fuel type, reaction time, and reaction temperature were tested for optimization. The glycine was set as a suitable fuel. Structural properties of the final product were characterized by p-XRD. Scanning electron microscopy (SEM) and BET techniques were used to examine the morphology. The synthesized products were compared to the commercial TiO$_{2}$ and it was found that the titanium dioxide with the high surface area (63.628 m$^{2}$/g) has been successfully synthesized by solution combustion method with time and energy saving. In the second part of the study, the adsorption efficiencies of synthesized titanium dioxide were tested, removal of Cr(VI) from wastewater was carried out. It was found that titanium dioxide obtained via solution combustion method has a better capacity for Cr(VI) removal from wastewater than commercial titanium dioxide. In consequence, the chosen synthesis method modified the surface properties and improved the chromium adsorption capacity.
Highlights
The titanium dioxide has several applications due to its excellent physical and chemical properties
When citric acid (CA) was used as fuel, the reaction was considered to be incomplete even though titanium dioxide’s 2 θ = 25.28° peak was observed
Titanium dioxide was successfully synthesized via solution combustion method
Summary
The titanium dioxide has several applications due to its excellent physical and chemical properties. Because of its economic advantages, using simple equipment, short-term effect, and high purity product formation, solution combustion method has been used for titanium dioxide synthesis. Heavy metals such as Cd, Cu, Cr, Mn, Hg, Ni, Pb, Sn, Fe, and Zn are present in various industrial. Many methods of remediation such as chemical precipitation, ion exchange, reverse osmosis, adsorption, and biosorption are used to remove chromium from wastewater From these methods, adsorption is seen as a powerful and versatile method to remove heavy metals when combined with appropriate desorption step solving the problem of sludge annihilation. Adsorption characteristics of Cr(VI) ions from aqueous solutions on synthesized and commercial TiO 2 were investigated comparatively
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