Impact of dysprosium doped (Dy) zinc ferrite (ZnFe2o4) nanocrystals in photo- fenton exclusion of recalcitrant organic pollutant

P Annie Vinosha; J V Annie Vinsla; J Madhavan; Sandhanasamy Devanesan; Mohamad S AlSalhi; Marcello Nicoletti; Belina Xavier

doi:10.1016/j.envres.2021.111913

Impact of dysprosium doped (Dy) zinc ferrite (ZnFe₂o₄) nanocrystals in photo- fenton exclusion of recalcitrant organic pollutant

Environ Res. 2022 Jan:203:111913. doi: 10.1016/j.envres.2021.111913. Epub 2021 Aug 20.

Authors

P Annie Vinosha¹, J V Annie Vinsla¹, J Madhavan², Sandhanasamy Devanesan³, Mohamad S AlSalhi³, Marcello Nicoletti⁴, Belina Xavier⁵

Affiliations

¹ Department of Physics, Stella Maris College (Autonomous), Affiliated to University of Madras, Chennai, 600086, India.
² Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India.
³ Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box -2455, Riyadh, 11451, Saudi Arabia.
⁴ Department of Environmental Biology, Sapienza University of Rome, Rome, 00185, Italy.
⁵ Department of Physics, Stella Maris College (Autonomous), Affiliated to University of Madras, Chennai, 600086, India. Electronic address: belina.xavier@gmail.com.

PMID: 34425112
DOI: 10.1016/j.envres.2021.111913

Abstract

The issue of effluent, especially organic colorants from several manufacturing units overlays an immense delinquent of the current epoch owing to its effect on oncogenic health hazards. Thus, Rare Earth Metal dysprosium (Dy) doped Zinc Ferrite (ZnFe₂O₄) were as-synthesized by a facile co-precipitation technique as an effectual nano photocatalyst intended to the amputation of these noxious dyes. The structural, functional, optical, magnetic, and degradation properties of this RE (Dy³⁺) doped ions were investigated using various characterizations, such as crystallite size (D) and several parameters (cation distribution, oxygen positional parameters, and bond length) were determined using XRD (X-ray diffraction) and it was found that as the dy³⁺ ion concentration increases the speck size decreased and the grain size remained within nano regime, which intern affects the surface area. From BET analysis it was found that on increasing the doping concentration, the surface area increases which pave a substantial role in the photo-Fenton activity. By using FT-IR (Fourier-transform infrared spectroscopy) various functional parameters (elastic, interionic bonds, ion distribution, etc.) were determined. Raman spectra had no extra peak formation which is seen to have pure phase formation of the as-synthesized samples. HR-TEM (High-Resolution Transmission Electron Microscopy analysis were done to determine the nature of the sample, the as-synthesized magnetic samples exhibit a polycrystalline formation with cubical agglomeration. The magnetic property was very significant for x = 0.10 concentration. As-synthesized (Fe_0.9064Zn_0.0936) [Fe_1.0936Dy_0.1Zn_0.8064] O₄) exhibits a momentous photo - Fenton activity against MB (Methylene blue), its removal efficiency was found to be 97.3% after 45 min. Also, this spinel ferrite acts as a magnetic recyclable catalyst even after 5 cycles with an insignificant lessening of elements and photo-Fenton activity.

Keywords: Co-precipitation; Dysprosium; FT-Raman; Magnetically recyclable; Photo-fenton.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Dysprosium
Environmental Pollutants*
Ferric Compounds
Nanoparticles*
Spectroscopy, Fourier Transform Infrared
Zinc

Substances

Environmental Pollutants
Ferric Compounds
ferrite
Dysprosium
Zinc