Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension

Maghemite (γ-Fe2O3) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent. Characterization of all samples performed by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), al...

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Main Authors: Nurdin, Irwan, Johan, Mohd Rafie, Yaacob, Iskandar Idris, Ang, Beechin
Format: Article
Language:English
English
English
Published: Hindawi Publishing Corporation 2014
Subjects:
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http://irep.iium.edu.my/58399/1/58399_Effect%20of%20Nitric%20Acid_article.pdf
http://irep.iium.edu.my/58399/2/58399_Effect%20of%20Nitric%20Acid_wos.pdf
http://irep.iium.edu.my/58399/3/58399_Effect%20of%20Nitric%20Acid_scopus.pdf
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spelling iium-583992018-02-23T00:37:16Z http://irep.iium.edu.my/58399/ Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension Nurdin, Irwan Johan, Mohd Rafie Yaacob, Iskandar Idris Ang, Beechin TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering Maghemite (γ-Fe2O3) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent. Characterization of all samples performed by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), alternating gradient magnetometry (AGM), thermogravimetric analysis (TGA), dynamic light scattering (DLS), and zeta potential. The XRD patterns confirmed that the particles were maghemite. The crystallite size of all samples decreases with the increasing concentration of nitric acid. TEM observation showed that the particles have spherical morphology with narrow particle size distribution. The particles showed superparamagnetic behavior with decreased magnetization values at the increasing concentration of nitric acid. TGA measurement showed that the stability temperature decreases with the increasing concentration of nitric acid. DLS measurement showed that the hydrodynamic particle sizes decrease with the increasing concentration of nitric acid. Zeta potential values show a decrease with the increasing concentration of nitric acid. The increasing concentration of nitric acid in synthesis of maghemite nanoparticles produced smaller size particles, lower magnetization, better thermal stability, and more stable maghemite nanoparticles suspension. Hindawi Publishing Corporation 2014 Article PeerReviewed application/pdf en http://irep.iium.edu.my/58399/1/58399_Effect%20of%20Nitric%20Acid_article.pdf application/pdf en http://irep.iium.edu.my/58399/2/58399_Effect%20of%20Nitric%20Acid_wos.pdf application/pdf en http://irep.iium.edu.my/58399/3/58399_Effect%20of%20Nitric%20Acid_scopus.pdf Nurdin, Irwan and Johan, Mohd Rafie and Yaacob, Iskandar Idris and Ang, Beechin (2014) Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension. The Scientific World Journal, 2014. pp. 1-7. ISSN 2356-6140 E-ISSN 1537-744X file:///C:/Users/norulizati/Downloads/589479.pdf 10.1155/2014/589479
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
English
English
topic TA Engineering (General). Civil engineering (General)
TD Environmental technology. Sanitary engineering
spellingShingle TA Engineering (General). Civil engineering (General)
TD Environmental technology. Sanitary engineering
Nurdin, Irwan
Johan, Mohd Rafie
Yaacob, Iskandar Idris
Ang, Beechin
Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
description Maghemite (γ-Fe2O3) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent. Characterization of all samples performed by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), alternating gradient magnetometry (AGM), thermogravimetric analysis (TGA), dynamic light scattering (DLS), and zeta potential. The XRD patterns confirmed that the particles were maghemite. The crystallite size of all samples decreases with the increasing concentration of nitric acid. TEM observation showed that the particles have spherical morphology with narrow particle size distribution. The particles showed superparamagnetic behavior with decreased magnetization values at the increasing concentration of nitric acid. TGA measurement showed that the stability temperature decreases with the increasing concentration of nitric acid. DLS measurement showed that the hydrodynamic particle sizes decrease with the increasing concentration of nitric acid. Zeta potential values show a decrease with the increasing concentration of nitric acid. The increasing concentration of nitric acid in synthesis of maghemite nanoparticles produced smaller size particles, lower magnetization, better thermal stability, and more stable maghemite nanoparticles suspension.
format Article
author Nurdin, Irwan
Johan, Mohd Rafie
Yaacob, Iskandar Idris
Ang, Beechin
author_facet Nurdin, Irwan
Johan, Mohd Rafie
Yaacob, Iskandar Idris
Ang, Beechin
author_sort Nurdin, Irwan
title Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
title_short Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
title_full Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
title_fullStr Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
title_full_unstemmed Effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
title_sort effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension
publisher Hindawi Publishing Corporation
publishDate 2014
url http://irep.iium.edu.my/58399/
http://irep.iium.edu.my/58399/
http://irep.iium.edu.my/58399/
http://irep.iium.edu.my/58399/1/58399_Effect%20of%20Nitric%20Acid_article.pdf
http://irep.iium.edu.my/58399/2/58399_Effect%20of%20Nitric%20Acid_wos.pdf
http://irep.iium.edu.my/58399/3/58399_Effect%20of%20Nitric%20Acid_scopus.pdf
first_indexed 2023-09-18T21:22:35Z
last_indexed 2023-09-18T21:22:35Z
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