Elango, M and Varuna, J (2020) Evaluation of physical properties and bactericidal efficacy of chemically developed undoped and Mn (5, 10, 15wt%) doped ZnO nanoparticles. MATERIALS TECHNOLOGY.

[thumbnail of 8.pdf] Text
8.pdf - Published Version
Download (5MB)

Abstract

Chemical precipitated and followed by calcinations is a versatile process for synthesising
undoped ZnO and Mn (5, 10 and 15 wt%) doped ZnO nanoparticles at pH-10 and calcinations
temperature of 450°C for 2 hours were followed for synthesising all the samples. The structural
properties evaluated via XRD pattern revealed the hexagonal wurzite phase and with the grain
size of 19 to 9 nm. Variation in the microstructural properties as function of dopant concentration was attributed using standard relations. The morphological and cross verification of
structural properties were made via HRTEM analysis. Wide, direct allowed band gap property
and narrow size distributed particles nature were confirmed through UV-visible absorption
spectra with blue shifted peaks. The bandgap values got increased on increasing the dopant
concentration. The presences of functional groups of the prepared samples were also confirmed by FTIR. Bands below 700 cm−1 assigns the Metal-oxygen framework of the sample. The
antibacterial efficiency of the prepared nanoparticles was evaluated for gram positive bacterial
strains namely Staphylococcus aureus and Bcaillus subtilis.

Item Type: Article
Uncontrolled Keywords: ZnO; Chemical precipitation; Physical properties; Bacterial properties
Divisions: PSG College of Arts and Science > Department of Physics
Depositing User: Mr Team Mosys
Date Deposited: 06 Oct 2022 07:07
Last Modified: 06 Oct 2022 07:07
URI: http://ir.psgcas.ac.in/id/eprint/1577

Actions (login required)

View Item
View Item
Altmetric