Characterization and stability monitoring of maghemite nanoparticle suspensions
Maghemite nanoparticle suspensions were synthesized using a co-precipitation method and characterized by a variety of techniques including XRD, TEM, magnetic measurement, DLS, and zeta potential. The stability of the suspension was monitored by measuring the particle size distribution using DLS ove...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Trans Tech Publications, Switzerland
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/27557/1/AMR.576.398.pdf |
| _version_ | 1825647005749215232 |
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| author | Nurdin, Irwan Yaacob, Iskandar Idris Johan, Mohd. Rafie Bee , Chin Ang |
| author_facet | Nurdin, Irwan Yaacob, Iskandar Idris Johan, Mohd. Rafie Bee , Chin Ang |
| author_sort | Nurdin, Irwan |
| collection | IIUM |
| description | Maghemite nanoparticle suspensions were synthesized using a co-precipitation method and characterized by a variety of techniques including XRD, TEM, magnetic measurement, DLS,
and zeta potential. The stability of the suspension was monitored by measuring the particle size distribution using DLS over a period of two months. The diffraction pattern from XRD measurement confirmed that the particles were maghemite with an average crystallite size of 9.4 nm. TEM observations and analyses showed that the geometry of maghemite nanoparticles were nearly spherical with a mean physical diameter of 9.9 nm. The maghemite nanoparticles showed superparamagnetic behavior with saturation magnetization value of 32.20 emu/g. The mean hydrodynamic diameter of the suspension remained unchanged after two months which indicated no formation of aggregation. The hydrodynamic diameters recorded were 45.1 nm and 48.4 nm,
respectively. Additionally, lack of sedimentation indicated that the suspension was stable. The suspension’s zeta potential values were 41.5 mV and 40.4 mV for as synthesized and after two month of storage respectively. |
| first_indexed | 2024-03-05T23:11:10Z |
| format | Article |
| id | oai:generic.eprints.org:27557 |
| institution | International Islamic University Malaysia |
| language | English |
| last_indexed | 2024-03-13T19:03:55Z |
| publishDate | 2012 |
| publisher | Trans Tech Publications, Switzerland |
| record_format | dspace |
| spelling | oai:generic.eprints.org:275572013-01-29T01:53:52Z http://irep.iium.edu.my/27557/ Characterization and stability monitoring of maghemite nanoparticle suspensions Nurdin, Irwan Yaacob, Iskandar Idris Johan, Mohd. Rafie Bee , Chin Ang TP155 Chemical engineering Maghemite nanoparticle suspensions were synthesized using a co-precipitation method and characterized by a variety of techniques including XRD, TEM, magnetic measurement, DLS, and zeta potential. The stability of the suspension was monitored by measuring the particle size distribution using DLS over a period of two months. The diffraction pattern from XRD measurement confirmed that the particles were maghemite with an average crystallite size of 9.4 nm. TEM observations and analyses showed that the geometry of maghemite nanoparticles were nearly spherical with a mean physical diameter of 9.9 nm. The maghemite nanoparticles showed superparamagnetic behavior with saturation magnetization value of 32.20 emu/g. The mean hydrodynamic diameter of the suspension remained unchanged after two months which indicated no formation of aggregation. The hydrodynamic diameters recorded were 45.1 nm and 48.4 nm, respectively. Additionally, lack of sedimentation indicated that the suspension was stable. The suspension’s zeta potential values were 41.5 mV and 40.4 mV for as synthesized and after two month of storage respectively. Trans Tech Publications, Switzerland 2012 Article PeerReviewed application/pdf en http://irep.iium.edu.my/27557/1/AMR.576.398.pdf Nurdin, Irwan and Yaacob, Iskandar Idris and Johan, Mohd. Rafie and Bee , Chin Ang (2012) Characterization and stability monitoring of maghemite nanoparticle suspensions. Advanced Materials Research, 576. pp. 398-401. ISSN 1022-6680 |
| spellingShingle | TP155 Chemical engineering Nurdin, Irwan Yaacob, Iskandar Idris Johan, Mohd. Rafie Bee , Chin Ang Characterization and stability monitoring of maghemite nanoparticle suspensions |
| title | Characterization and stability monitoring of maghemite nanoparticle suspensions |
| title_full | Characterization and stability monitoring of maghemite nanoparticle suspensions |
| title_fullStr | Characterization and stability monitoring of maghemite nanoparticle suspensions |
| title_full_unstemmed | Characterization and stability monitoring of maghemite nanoparticle suspensions |
| title_short | Characterization and stability monitoring of maghemite nanoparticle suspensions |
| title_sort | characterization and stability monitoring of maghemite nanoparticle suspensions |
| topic | TP155 Chemical engineering |
| url | http://irep.iium.edu.my/27557/1/AMR.576.398.pdf |
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