A study on growth formation of nano-sized magnetite Fe3O4 via co-precipitation method
A simple and cost-effective chemical co-precipitation of aqueous ferrous and ferric salts was used to synthesis controlled size of magnetite iron oxide nanoparticles. The titration reactions between the aqueous Fe2+/Fe3+ salt solutions were controlled by an autotitrator unit with continuous addition...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Published: |
Taylor & Francis
2014
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/15489/ https://doi.org/10.1179/1432891714Z.0000000001028 |
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| Summary: | A simple and cost-effective chemical co-precipitation of aqueous ferrous and ferric salts was used to synthesis controlled size of magnetite iron oxide nanoparticles. The titration reactions between the aqueous Fe2+/Fe3+ salt solutions were controlled by an autotitrator unit with continuous addition of 1 M sodium hydroxide under different heating temperatures from 30 up to 80 degrees C in oxidising atmosphere. Then, further investigation on the degree of crystallinity of magnetite iron oxide nanoparticles was conducted by altering the concentration of Fe2+/Fe3+ ions in the ratio of 1:1, 1:1.25, 1:1.5 and 1:2. The resultant magnetite iron oxide nanoparticles were characterised by using X-ray diffraction, field emission scanning electron microscopy and Fourier transform infrared spectroscopy. The ratio of Fe2+/Fe3+ salt solutions and heating temperatures played a crucial role in controlling the morphology, crystallinity and particle sizes of magnetite magnetite iron oxide. |
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