Bhoopathi, G (2021) An Amalgam of Mg‑Doped TiO2 Nanoparticles Prepared by Sol–Gel Method for Efective Antimicrobial and Photocatalytic Activity. Journal of Inorganic and Organometallic Polymers and Materials, 31. pp. 4594-4607.

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Abstract

In this study, undoped and Magnesium doped TiO2 nanoparticles (Mg-TiO2 NPs) are successfully synthesized via a simple
sol–gel method cost-efectively. The prepared Mg- TiO2 NPs is characterized by UV–Vis, FTIR, PL, XRD, FESEM, TEM,
and EDAX. UV–Visible Spectroscopy showed that an increase in the optical bandgap concerning the concentration of dopant
Mg increases. The bandgap values were found to be 3.57–3.54 eV. FTIR spectra shows that the presence of the characteristic stretching and bending vibrational band of Ti–O bonding at 468 cm−1 and shifts in vibrational bands were observed for
Mg-TiO2 NPs. PL spectra of Mg- TiO2 NPs at diferent concentrations exhibit a strong UV emission band. X-ray difraction
confrmed the formation of the tetragonal anatase phase. The average crystallite size of synthesized samples was found to
be 22–19 nm. The average crystallite size of Mg- TiO2 NPs decreases with increasing the concentration of dopant Mg. The
FESEM and TEM analysis confrmed that the spherical morphology for both TiO2 and Mg-TiO2 NPs. SAED pattern confrms
the crystalline nature of prepared samples. EDAX spectra confrm the presence of Ti, O, and Mg and confrm that Mg2+ ions
are present in the TiO2 lattices. The prepared samples were investigated against gram-positive and gram-negative bacteria.
The prepared samples exhibit potent antibacterial activity against gram-negative bacteria than the gram-positive bacteria.
The prepared samples exhibit signifcant photocatalytic degradation for Methylene blue (MB).

Item Type: Article
Uncontrolled Keywords: Mg-TiO2 NPs · Structural properties · Reactive oxygen species · Antibacterial activity · Photocatalytic activity
Divisions: PSG College of Arts and Science > Department of Physics
Depositing User: Mr Team Mosys
Date Deposited: 27 Mar 2023 06:52
Last Modified: 27 Mar 2023 06:52
URI: http://ir.psgcas.ac.in/id/eprint/1823

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