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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English English |
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Hindawi Publishing Corporation
2014
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| Online Access: | 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 |
| _version_ | 1848785106341199872 |
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| 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 |
| building | IIUM Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T16:47:52Z |
| format | Article |
| id | iium-58399 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T16:47:52Z |
| publishDate | 2014 |
| publisher | Hindawi Publishing Corporation |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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 |
| 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 |
| title | 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_short | 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 |
| topic | TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering |
| 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 |