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Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red
Iron oxide nanoparticles (IONPs) were synthesized via a block copolymer-assisted hydrothermal method and the phase purity and the crystal structure were investigated by X-ray diffraction. The Rietveld analysis of X-ray diffractometer spectra shows the hexagonal phase symmetry of α-Fe(2)O(3). Further...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964741/ https://www.ncbi.nlm.nih.gov/pubmed/36838902 http://dx.doi.org/10.3390/molecules28041914 |
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author | Bhattarai, Mohan K. Ashie, Moses D. Dugu, Sita Subedi, Kiran Bastakoti, Bishnu P. Morell, Gerardo Katiyar, Ram S. |
author_facet | Bhattarai, Mohan K. Ashie, Moses D. Dugu, Sita Subedi, Kiran Bastakoti, Bishnu P. Morell, Gerardo Katiyar, Ram S. |
author_sort | Bhattarai, Mohan K. |
collection | PubMed |
description | Iron oxide nanoparticles (IONPs) were synthesized via a block copolymer-assisted hydrothermal method and the phase purity and the crystal structure were investigated by X-ray diffraction. The Rietveld analysis of X-ray diffractometer spectra shows the hexagonal phase symmetry of α-Fe(2)O(3). Further, the vibrational study suggests Raman active modes: 2A1g + 5Eg associated with α-Fe(2)O(3), which corroborates the Rietveld analysis and orbital analysis of 2PFe. The superparamagnetic behavior is confirmed by magnetic measurements performed by the physical properties measurement system. The systematic study of the Congo red (CR) interaction with IONPs using a UV-visible spectrophotometer and a liquid chromatography–tandem mass spectrometry system equipped with a triple quadrupole mass analyzer and an electrospray ionization interface shows effective adsorption. In visible light, the Fe(2)O(3) nanoparticles get easily excited and generate electrons and holes. The photogenerated electrons reduce the Fe(3+) ions to Fe(2+) ions. The Fe(2+)/H(2)O(2) oxidizes CR by the Fenton mechanism. The strong adsorption ability of prepared nanoparticles towards dyes attributes the potential candidates for wastewater treatment and other catalytic applications. |
format | Online Article Text |
id | pubmed-9964741 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-99647412023-02-26 Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red Bhattarai, Mohan K. Ashie, Moses D. Dugu, Sita Subedi, Kiran Bastakoti, Bishnu P. Morell, Gerardo Katiyar, Ram S. Molecules Article Iron oxide nanoparticles (IONPs) were synthesized via a block copolymer-assisted hydrothermal method and the phase purity and the crystal structure were investigated by X-ray diffraction. The Rietveld analysis of X-ray diffractometer spectra shows the hexagonal phase symmetry of α-Fe(2)O(3). Further, the vibrational study suggests Raman active modes: 2A1g + 5Eg associated with α-Fe(2)O(3), which corroborates the Rietveld analysis and orbital analysis of 2PFe. The superparamagnetic behavior is confirmed by magnetic measurements performed by the physical properties measurement system. The systematic study of the Congo red (CR) interaction with IONPs using a UV-visible spectrophotometer and a liquid chromatography–tandem mass spectrometry system equipped with a triple quadrupole mass analyzer and an electrospray ionization interface shows effective adsorption. In visible light, the Fe(2)O(3) nanoparticles get easily excited and generate electrons and holes. The photogenerated electrons reduce the Fe(3+) ions to Fe(2+) ions. The Fe(2+)/H(2)O(2) oxidizes CR by the Fenton mechanism. The strong adsorption ability of prepared nanoparticles towards dyes attributes the potential candidates for wastewater treatment and other catalytic applications. MDPI 2023-02-17 /pmc/articles/PMC9964741/ /pubmed/36838902 http://dx.doi.org/10.3390/molecules28041914 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 Bhattarai, Mohan K. Ashie, Moses D. Dugu, Sita Subedi, Kiran Bastakoti, Bishnu P. Morell, Gerardo Katiyar, Ram S. Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red |
title | Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red |
title_full | Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red |
title_fullStr | Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red |
title_full_unstemmed | Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red |
title_short | Block Copolymer-Assisted Synthesis of Iron Oxide Nanoparticles for Effective Removal of Congo Red |
title_sort | block copolymer-assisted synthesis of iron oxide nanoparticles for effective removal of congo red |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964741/ https://www.ncbi.nlm.nih.gov/pubmed/36838902 http://dx.doi.org/10.3390/molecules28041914 |
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