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Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals

Background: Nanomaterials are widely synthesized by wet chemical routes. Magnetic nanoparticles with size ranging from 2 to 20 nm are of significant importance, resulting in a unique magnetic property of the nanoparticles. Maghemite nanostructures with partially disordered (Fe3+)[Fe5/3⁏1/3]O4 struct...

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Main Authors: Hasany, S. F., Nour, A. H., Sunarti, Abd Rahman
Format: Article
Published: Bentham Science 2016
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TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/16814/
http://www.eurekaselect.com/140310/article#
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spelling my.ump.umpir.168142018-01-24T02:21:32Z http://umpir.ump.edu.my/id/eprint/16814/ Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals Hasany, S. F. Nour, A. H. Sunarti, Abd Rahman TP Chemical technology Background: Nanomaterials are widely synthesized by wet chemical routes. Magnetic nanoparticles with size ranging from 2 to 20 nm are of significant importance, resulting in a unique magnetic property of the nanoparticles. Maghemite nanostructures with partially disordered (Fe3+)[Fe5/3⁏1/3]O4 structures, undergo cation-insertion reactions without resorting to a drastic change in the material composition. Tailoring the superparamagnetic properties of nanoparticles by doping with transition metals, such as vanadium could be advantageous, as it would provide control over properties that are important for biological applications, such as magnetization dependent changes in temperature, relaxivity, and hysteresis. Method: We describe the obtention of vanadium doped maghemite (Fe2-xVxO3) from colloidal suspensions of vanadium and iron salts, using a precipitation–annealing method. A single step simpler synthesis scheme has been proposed in this work, with annealing temperature (350 °C), for a short period of time (~ 15 minutes), in order to achieve smaller in size but developed nanocrystals. Results: Superparamagnetic vanadium doped maghemite with particles (~8 nm) size has been synthesized. For the first time, vanadium up to 5 mol% has been doped on maghemite nanocrystals and characterized successfully for the presence of stable V3+. These results open a new era of vanadium applications in industrial Nanosciences; possessing superparamagnetic properties. Conclusion: A wet chemical route to direct the synthesis of vanadium doped γ- Fe2O3 nanocrystals, has been studied. The doping controls the crystallite size by occupying the vacant octahedral spaces available in the cubic system (space group P4332) maghemite crystals. High surface area magnetic particles, with an average size of ~8 nm were obtained. Bentham Science 2016 Article PeerReviewed Hasany, S. F. and Nour, A. H. and Sunarti, Abd Rahman (2016) Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals. Current Nanoscience, 12 (5). pp. 617-620. ISSN 1573-4137 (Print); 1875-6786 (Online) http://www.eurekaselect.com/140310/article# DOI: 10.2174/1573413712666160308203115
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Hasany, S. F.
Nour, A. H.
Sunarti, Abd Rahman
Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals
description Background: Nanomaterials are widely synthesized by wet chemical routes. Magnetic nanoparticles with size ranging from 2 to 20 nm are of significant importance, resulting in a unique magnetic property of the nanoparticles. Maghemite nanostructures with partially disordered (Fe3+)[Fe5/3⁏1/3]O4 structures, undergo cation-insertion reactions without resorting to a drastic change in the material composition. Tailoring the superparamagnetic properties of nanoparticles by doping with transition metals, such as vanadium could be advantageous, as it would provide control over properties that are important for biological applications, such as magnetization dependent changes in temperature, relaxivity, and hysteresis. Method: We describe the obtention of vanadium doped maghemite (Fe2-xVxO3) from colloidal suspensions of vanadium and iron salts, using a precipitation–annealing method. A single step simpler synthesis scheme has been proposed in this work, with annealing temperature (350 °C), for a short period of time (~ 15 minutes), in order to achieve smaller in size but developed nanocrystals. Results: Superparamagnetic vanadium doped maghemite with particles (~8 nm) size has been synthesized. For the first time, vanadium up to 5 mol% has been doped on maghemite nanocrystals and characterized successfully for the presence of stable V3+. These results open a new era of vanadium applications in industrial Nanosciences; possessing superparamagnetic properties. Conclusion: A wet chemical route to direct the synthesis of vanadium doped γ- Fe2O3 nanocrystals, has been studied. The doping controls the crystallite size by occupying the vacant octahedral spaces available in the cubic system (space group P4332) maghemite crystals. High surface area magnetic particles, with an average size of ~8 nm were obtained.
format Article
author Hasany, S. F.
Nour, A. H.
Sunarti, Abd Rahman
author_facet Hasany, S. F.
Nour, A. H.
Sunarti, Abd Rahman
author_sort Hasany, S. F.
title Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals
title_short Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals
title_full Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals
title_fullStr Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals
title_full_unstemmed Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals
title_sort wet chemical approach for vanadium doped maghemite (fe2-xvxo3) nanocrystals
publisher Bentham Science
publishDate 2016
url http://umpir.ump.edu.my/id/eprint/16814/
http://www.eurekaselect.com/140310/article#
_version_ 1643668019550879744
score 13.211869

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