Proceedings of the International Conference on Bio-Based Environment for Sustainable Territory (ICBEST 2024)

Eco-Friendly Photodegradation and Anti-bacterial Treatment of Dye Effluents with special reference to Malachite Green using SrFe12O19/TiO2/ZnO Ternary Nanocomposites

Authors
Ch. Ramya Kumari1, *, K. Jyothi Priya1, M. Suneetha1, N. Sridevi Chandrakala1, T. Bulli Babu1, M. Padma1, S. Paul Douglas1, *
1Department of Engineering Chemistry, Andhra University College of Engineering [A], Andhra University, Visakhapatnam, 530003, Andhra Pradesh, India
*Corresponding author. Email: ramyametta99@gmail.com
*Corresponding author. Email: spdfchem@andhrauniversity.edu.in
Corresponding Authors
Ch. Ramya Kumari, S. Paul Douglas
Available Online 7 February 2025.
DOI
10.2991/978-94-6463-648-2_18How to use a DOI?
Keywords
SrFe12O19/ZnO/TiO2 nanomagnetic composites; Visible-light Photodegradation; Malachite Green dye
Abstract

A novel ternary metal oxide nanocomposite (SrFe12O19/TiO2/ZnO) was synthesized using the sol-gel method for malachite green dye degradation. The absorption maximum was determined by ultraviolet-diffuse reflectance spectroscopy (DRS), revealing a bandgap of 2.29 eV. Fourier transform infrared spectroscopy (FT-IR) confirmed the formation of metal-oxygen bonds, indicating the presence of functional groups in the fabricated metal oxides. The average crystallite size was calculated to be around 30 nm based on X-ray powder diffraction (XRD) analysis. Structural properties, phase purity, and surface morphology were examined using scanning electron microscopy (SEM), while high-resolution transmission electron microscopy (HR-TEM) showed a spherical morphology. The elemental composition was determined via energy-dispersive X-ray analysis (EDAX), and magnetic properties were studied through vibrating sample magnetometry (VSM). The nanocomposite exhibited 100% degradation of malachite green dye Lambda max – 917 nm at a 10-ppm concentration, pH-8 under visible light, demonstrating superior photocatalytic activity compared to pure magnetite and SrFe12O19/TiO2/ZnO. This enhanced efficiency is attributed to the synergistic interaction between TiO2, ZnO, and SrFe12O19, which improves charge separation, light absorption, and the generation of reactive oxygen species (ROS), promoting pollutant degradation. Antibacterial tests against Gram-negative Salmonella enterica (ATCC no: 35664) and Gram-positive Mycobacterium tuberculosis (ATCC no. 25618/H37RV) revealed potent activity, with the nanocomposite reusable for up to three cycles. Therefore, this highly efficient, cost-effective, and reusable catalyst is suitable for removing toxic organic pollutants from industrial wastewater.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Conference on Bio-Based Environment for Sustainable Territory (ICBEST 2024)
Series
Advances in Biological Sciences Research
Publication Date
7 February 2025
ISBN
978-94-6463-648-2
ISSN
2468-5747
DOI
10.2991/978-94-6463-648-2_18How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

TY  - CONF
AU  - Ch. Ramya Kumari
AU  - K. Jyothi Priya
AU  - M. Suneetha
AU  - N. Sridevi Chandrakala
AU  - T. Bulli Babu
AU  - M. Padma
AU  - S. Paul Douglas
PY  - 2025
DA  - 2025/02/07
TI  - Eco-Friendly Photodegradation and Anti-bacterial Treatment of Dye Effluents with special reference to Malachite Green using SrFe₁₂O₁₉/TiO₂/ZnO Ternary Nanocomposites
BT  - Proceedings of the International Conference on Bio-Based Environment for Sustainable Territory (ICBEST 2024)
PB  - Atlantis Press
SP  - 231
EP  - 255
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-648-2_18
DO  - 10.2991/978-94-6463-648-2_18
ID  - Kumari2025
ER  -