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Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method

We used a hydrothermal technique to develop nano-scale α-Fe(2)O(3) particles and functionalized them with chitosan. An X-ray diffraction study revealed α-Fe(2)O(3) nanoparticles were of single-phase, lattice constants were a = 5.07 Å and c = 13.68 Å, and the grain size was 27 nm. The presence of lat...

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Autores principales: Deb, Nandita, Rashid, Rimi, Das, H., Syed, Ishtiaque M., Hoque, S. Manjura
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10565375/
https://www.ncbi.nlm.nih.gov/pubmed/37830020
http://dx.doi.org/10.1098/rsos.230384
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author Deb, Nandita
Rashid, Rimi
Das, H.
Syed, Ishtiaque M.
Hoque, S. Manjura
author_facet Deb, Nandita
Rashid, Rimi
Das, H.
Syed, Ishtiaque M.
Hoque, S. Manjura
author_sort Deb, Nandita
collection PubMed
description We used a hydrothermal technique to develop nano-scale α-Fe(2)O(3) particles and functionalized them with chitosan. An X-ray diffraction study revealed α-Fe(2)O(3) nanoparticles were of single-phase, lattice constants were a = 5.07 Å and c = 13.68 Å, and the grain size was 27 nm. The presence of lattice fringes in the HRTEM image confirmed the crystalline nature of the α-Fe(2)O(3). The Mössbauer spectra reveal a mixed relaxation state, which supports the PPMS studies. Zero-field cooled studies revealed the existence of a Morin transition and blocking temperature. The z-average value of the coated particles by DLS was between 218 and 235 nm, PDI ranged from 0.048 to 0.119, and zeta potential was +46.8 mV. We incubated the Vero and HeLa cell lines for 24 h to study the viability of the nanohybrids at different concentrations. Hyperthermia studies revealed the maximum temperature and specific loss power attained by the hematite–chitosan nanohybrid solution of a concentration between 0.25–4 mg ml(−1). The T(max) at the lowest and highest concentrations of 0.25 and 4 mg ml(−1) were 42.9 and 48.3°C, while the SLP were 501.6 and 35.5 W g(−1), which are remarkably high when the maximum magnetization of α-Fe(2)O(3) nanoparticles was as small as 1.98 emu g(−1) at 300 K.
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spelling pubmed-105653752023-10-12 Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method Deb, Nandita Rashid, Rimi Das, H. Syed, Ishtiaque M. Hoque, S. Manjura R Soc Open Sci Chemistry We used a hydrothermal technique to develop nano-scale α-Fe(2)O(3) particles and functionalized them with chitosan. An X-ray diffraction study revealed α-Fe(2)O(3) nanoparticles were of single-phase, lattice constants were a = 5.07 Å and c = 13.68 Å, and the grain size was 27 nm. The presence of lattice fringes in the HRTEM image confirmed the crystalline nature of the α-Fe(2)O(3). The Mössbauer spectra reveal a mixed relaxation state, which supports the PPMS studies. Zero-field cooled studies revealed the existence of a Morin transition and blocking temperature. The z-average value of the coated particles by DLS was between 218 and 235 nm, PDI ranged from 0.048 to 0.119, and zeta potential was +46.8 mV. We incubated the Vero and HeLa cell lines for 24 h to study the viability of the nanohybrids at different concentrations. Hyperthermia studies revealed the maximum temperature and specific loss power attained by the hematite–chitosan nanohybrid solution of a concentration between 0.25–4 mg ml(−1). The T(max) at the lowest and highest concentrations of 0.25 and 4 mg ml(−1) were 42.9 and 48.3°C, while the SLP were 501.6 and 35.5 W g(−1), which are remarkably high when the maximum magnetization of α-Fe(2)O(3) nanoparticles was as small as 1.98 emu g(−1) at 300 K. The Royal Society 2023-10-11 /pmc/articles/PMC10565375/ /pubmed/37830020 http://dx.doi.org/10.1098/rsos.230384 Text en © 2023 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Chemistry
Deb, Nandita
Rashid, Rimi
Das, H.
Syed, Ishtiaque M.
Hoque, S. Manjura
Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
title Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
title_full Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
title_fullStr Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
title_full_unstemmed Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
title_short Enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
title_sort enhanced specific loss power of hematite–chitosan nanohybrid synthesized by hydrothermal method
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10565375/
https://www.ncbi.nlm.nih.gov/pubmed/37830020
http://dx.doi.org/10.1098/rsos.230384
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