Geetha, N (2022) Effect of Fe Doping on Photocatalytic Dye-Degradation and Antibacterial Activity of SnO2 Nanoparticles. Hindawi Adsorption Science & Technology: 9334079. pp. 1-13.

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Abstract

A simple hydrothermal method is utilized to synthesize iron-doped tin oxide nanoparticles (Fe-SnO2 NPs) at various doping
concentrations. The structural characterization using XRD, Raman, and FTIR measurements confirmed the incorporation of Fe
ions into the SnO2 lattice without any deviation in the tetragonal crystal system of SnO2 nanoparticles. SEM and HRTEM
images show the spherical-shaped nanoparticles with agglomeration. The values of interplanar spacing (d-value) calculated
from the HRTEM lattice are consistent with the XRD results. Further, optical analysis revealed a red shift in the optical
absorption band and a decrease in the band gap energy with an increase in Fe-dopant concentration. The decrease of PL
emission peak intensity with Fe doping revealed the generation of singly charged oxygen vacancies. The H2O2-assisted
photocatalytic degradation efficiency of Fe-SnO2 NPs investigated against crystal violet dye indicated an efficiency of 98% for
0.05 M Fe-SnO2 NPs within 30 minutes under visible light illumination. In addition, the effects of pH, scavengers, and
reusability of the catalyst are tested. The antibacterial behavior of Fe-SnO2 NPs against Escherichia coli is examined by using
the colony count method, and the inhibition rate was found to be 49, 65, 70, and 78% for pure, 0.01, 0.03, and 0.05 M Fe-SnO2
NPs, respectively.

Item Type: Article
Divisions: PSG College of Arts and Science > Department of Zoology
Depositing User: Mr Team Mosys
Date Deposited: 06 Oct 2022 09:50
Last Modified: 06 Oct 2022 09:50
URI: http://ir.psgcas.ac.in/id/eprint/1587

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