Abstract
Titanium dioxide (TiO2) and magnesium doped TiO2 with Mg concentration of 0.5, 1 and 2 mol% were synthesized via a co-operating technique of direct microwave and traditional heating. The precursor was firstly heated by 800 w microwave oven and annealed at 300 °C for 3 hr. The crystalline structure, morphology and optical properties were examined by X-ray diffraction (XRD), Scanning electron microscopy (SEM), UV-Visible spectroscopy (UV-Vis) and Photoluminescence technique (PL), respectively. As-synthesized products showed a phase of anatase TiO2 without Mg compound phase existence. The incorporation of Mg2+ in TiO2 crystal structures affected the shift of energy bandgap, the reduction of PL emission intensity and antimicrobial activity change. The energy bandgap with various dopant concentrations determines to be 3.13, 3.11, 3.07 and 2.97 eV. PL emission peaks are obtained around wavelength of 375 nm and their emission intensity are greater when concentration of added Mg increase, indicating a higher electron- hole recombination rate. Pristine TiO2 exhibits a highest inhibition zone of 30 mm against gram-positive Staphylococcus aureus (S.aureus).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
