Cost-effective and green approach for the synthesis of zinc ferrite nanoparticles using Aegle Marmelos extract as a fuel
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Cost-effective and green approach for the synthesis of zinc ferrite nanoparticles using Aegle Marmelos extract as a fuel: catalytic, electrochemical, and microbial applications V. Lakshmi Ranganatha1, S. Pramila2, G. Nagaraju3, Udayabhanu3, B. S. Surendra4, and C. Mallikarjunaswamy2,* 1
Department of Chemistry, The National Institute of Engineering, Manandavadi Road, Mysuru, Karnataka 570008, India Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Ooty Road, Mysuru, Karnataka 570025, India 3 Energy Materials Research Laboratory, Department of Chemistry, Siddaganga Institute of Technology, Tumakuru, Karnataka 572103, India 4 Department of Chemistry, East West Institute of Technology, Bengaluru, Karnataka 560 091, India 2
Received: 26 March 2020
ABSTRACT
Accepted: 19 August 2020
Today, due to industrialization and urbanization, the world is facing serious water shortage and environmental alarms. The reusability of polluted water could be a promising approach for the sustainable wastewater management strategy. In the view, the present work compiles the synthesis of zinc ferrite (ZnFe2O4) nanoparticles by a simple, economic, and eco-friendly route. The investigation of structural properties, thermal properties, and optical properties was carried out successfully by standard characterization techniques. The X-ray diffraction patterns confirmed the spinel-cubic lattice with Fd-3m space group for all the samples. The presence of vibrational frequency modes of Zn–O and Fe–O was ensured by FTIR spectra. The nano-size, morphology, atomic percentage, and some agglomeration of the nanoparticles were revealed by SEM– EDX and TEM images. The bandgap values were calculated from UV–Visible analysis data, and found to be 2.36 eV. The distribution of pore size by BJH method and BET surface area was evaluated by Nitrogen adsorption–desorption isotherms, and is found to be 19.74 m2/g. The thermogravimetric and differential thermal analysis affirmed percentage of weight loss and phase formation. The photocatalytic activity of methylene blue was evaluated under visible light and the removal efficiency of 96% and nano-catalyst shows active reusability. The cyclic voltammetry and electrochemical impedance spectroscopy (EIS) were used for the study of electrochemical properties of nanoparticles. Further, the antimicrobial activity of the nanoparticles was investigated using Gram-positive, Gram-negative bacteria and some selected fungi strains. The obtained
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
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https://doi.org/10.1007/s10854-020-04295-6
J Mater Sci: Mater Electron
results revealed that the newly synthesized ZnFe2O4 can act as potential photocatalyst, electrochemical sensor, and antimicrobial agent.
1 Introduction For the past few decades, access to potable water becomes a key challenge to billions of peoples. Rainwater or groundwater harvesting is the best way to address this issue and along with the conver
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