Preparation of Heat Treated Titanium Dioxide (TiO2) Nanoparticles for Water Purification

Euroinvent ICIR 2018

Araoyinbo, A.O.^1 ; Abdullah, M.M.A.B.^1,2 ; Rahmat, A.^2 ; Azmi, A.I.^1 ; Vizureanu, P.^2,3 ; Wan Abd Rahim, W.M.F.^1

Faculty of Engineering Technology, Universiti Malaysia Perlis, Perlis, Malaysia^1

Center of Excellence Geopolymer and Green Materials (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^2

Gheorghe Asachi Technical University of Iasi, Faculty of Materials Science and Engineering, Blvd. D. Mangeron 41, Iasi

700050, Romania^3

关键词: Degradation of methyl oranges;    Photocatalytic activities;    Photocatalytic treatment;    Soluble organic compounds;    Titanium dioxide nanoparticles;    Titanium dioxide particles;    Titanium dioxides (TiO2);    Titanium tetraisopropoxide;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/374/1/012084/pdf
DOI  :  10.1088/1757-899X/374/1/012084

来源: IOP

【 摘 要 】

Photocatalysis using the semiconductor titanium dioxide (TiO2) has proven to be a successful technology for waste water purification. The photocatalytic treatment is an alternative method for the removal of soluble organic compounds in waste water. In this research, titanium dioxide nanoparticles were synthesized by sol-gel method using titanium tetraisopropoxide (TTIP) as a precursor. The sol was dried in the oven at 120°C after aging for 24 hours. The dried powder was then calcined at 400°C and 700°C with a heating rate of 10°C/min. The phase transformation of the heat treated titanium dioxide nanoparticles were characterized by X-Ray Diffraction (XRD, and the surface morphology by Scanning Electron Microscopy (SEM). The photocatalytic activity of the heat treated titanium dioxide nanoparticles in the degradation of methyl orange (MO) dye under ultraviolet (UV) light irradiation has been studied. At calcination temperature of 400°C, only anatase phase was observed, as the calcination temperature increases to 700°C, the rutile phase was present. The SEM images show the irregular shape of titanium dioxide particles and the agglomeration which tends to be more significant at calcined temperature of 700°C. Degradation of methyl orange by 5 mg heat treated titanium dioxide nanoparticles gives the highest percentage of degradation after irradiation by UV lamp for 4 hours.