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CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment

The aim of this study was to synthesize a CoFe(2)O(4)@HaP nanocomposite (HaP-Hydroxyapatite) through the coprecipitation method in aqueous solution, with the purpose of using it in adsorption processes for the removal of Congo Red dye from aqueous solutions. Fourier Transform Infrared Spectroscopy (...

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Autores principales: Dănilă, Raluca-Ștefania, Dumitru, Ioan, Ignat, Maria, Pui, Aurel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095400/
https://www.ncbi.nlm.nih.gov/pubmed/37048887
http://dx.doi.org/10.3390/ma16072594
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author Dănilă, Raluca-Ștefania
Dumitru, Ioan
Ignat, Maria
Pui, Aurel
author_facet Dănilă, Raluca-Ștefania
Dumitru, Ioan
Ignat, Maria
Pui, Aurel
author_sort Dănilă, Raluca-Ștefania
collection PubMed
description The aim of this study was to synthesize a CoFe(2)O(4)@HaP nanocomposite (HaP-Hydroxyapatite) through the coprecipitation method in aqueous solution, with the purpose of using it in adsorption processes for the removal of Congo Red dye from aqueous solutions. Fourier Transform Infrared Spectroscopy (FT-IR) was used to characterize the synthesized material, identifying absorption bands specific to the functional groups of cobalt ferrite (Fe-O and Co-O at 603 and 472 cm(−1)) and hydroxyapatite PO(4)(3−) at 1035, 962, 603 and 565 cm(−1). Powder X-ray diffraction confirmed the cubic spinel structure of cobalt ferrite (S.G Fd-3m) and the hexagonal structure of hydroxyapatite (S.G P63/m). The nanocomposite’s crystallite size was calculated to be 57.88 nm. Nitrogen adsorption/desorption isotherms and BET specific surface area measurements were used to monitor textural parameters, revealing an increase in specific BET surface area when cobalt ferrite nanoparticles (15 m(2)/g) were introduced into the hydroxyapatite heterostructure (34 m(2)/g). Magnetic properties were investigated by interpreting hysteresis curves in the ±10 kOe range, with the nanocomposite showing a saturation magnetization of 34.83 emu/g and a coercivity value of 0.03 kOe. The adsorption capacity of the CoFe(2)O(4)@HaP nanocomposite is up to 15.25 mg/g and the pseudo-second-order kinetic model (Type 1) fits the data with a high correlation coefficient of 0.9984, indicating that the chemical adsorption determines the rate-determining step of the process. The obtained nanocomposite is confirmed by the analyses, and the absorption measurements demonstrate that it can be utilized to degrade Congo Red dye.
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spelling pubmed-100954002023-04-13 CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment Dănilă, Raluca-Ștefania Dumitru, Ioan Ignat, Maria Pui, Aurel Materials (Basel) Article The aim of this study was to synthesize a CoFe(2)O(4)@HaP nanocomposite (HaP-Hydroxyapatite) through the coprecipitation method in aqueous solution, with the purpose of using it in adsorption processes for the removal of Congo Red dye from aqueous solutions. Fourier Transform Infrared Spectroscopy (FT-IR) was used to characterize the synthesized material, identifying absorption bands specific to the functional groups of cobalt ferrite (Fe-O and Co-O at 603 and 472 cm(−1)) and hydroxyapatite PO(4)(3−) at 1035, 962, 603 and 565 cm(−1). Powder X-ray diffraction confirmed the cubic spinel structure of cobalt ferrite (S.G Fd-3m) and the hexagonal structure of hydroxyapatite (S.G P63/m). The nanocomposite’s crystallite size was calculated to be 57.88 nm. Nitrogen adsorption/desorption isotherms and BET specific surface area measurements were used to monitor textural parameters, revealing an increase in specific BET surface area when cobalt ferrite nanoparticles (15 m(2)/g) were introduced into the hydroxyapatite heterostructure (34 m(2)/g). Magnetic properties were investigated by interpreting hysteresis curves in the ±10 kOe range, with the nanocomposite showing a saturation magnetization of 34.83 emu/g and a coercivity value of 0.03 kOe. The adsorption capacity of the CoFe(2)O(4)@HaP nanocomposite is up to 15.25 mg/g and the pseudo-second-order kinetic model (Type 1) fits the data with a high correlation coefficient of 0.9984, indicating that the chemical adsorption determines the rate-determining step of the process. The obtained nanocomposite is confirmed by the analyses, and the absorption measurements demonstrate that it can be utilized to degrade Congo Red dye. MDPI 2023-03-24 /pmc/articles/PMC10095400/ /pubmed/37048887 http://dx.doi.org/10.3390/ma16072594 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dănilă, Raluca-Ștefania
Dumitru, Ioan
Ignat, Maria
Pui, Aurel
CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment
title CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment
title_full CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment
title_fullStr CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment
title_full_unstemmed CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment
title_short CoFe(2)O(4)@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment
title_sort cofe(2)o(4)@hap as magnetic heterostructures for sustainable wastewater treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095400/
https://www.ncbi.nlm.nih.gov/pubmed/37048887
http://dx.doi.org/10.3390/ma16072594
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AT ignatmaria cofe2o4hapasmagneticheterostructuresforsustainablewastewatertreatment
AT puiaurel cofe2o4hapasmagneticheterostructuresforsustainablewastewatertreatment