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https://doi.org/10.1039/b100758k
DC Field | Value | |
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dc.title | Synthesis of Fe3O4 nanoparticles from emulsions | |
dc.contributor.author | Zhou, Z.H. | |
dc.contributor.author | Wang, J. | |
dc.contributor.author | Liu, X. | |
dc.contributor.author | Chan, H.S.O. | |
dc.date.accessioned | 2014-10-16T08:44:06Z | |
dc.date.available | 2014-10-16T08:44:06Z | |
dc.date.issued | 2001 | |
dc.identifier.citation | Zhou, Z.H., Wang, J., Liu, X., Chan, H.S.O. (2001). Synthesis of Fe3O4 nanoparticles from emulsions. Journal of Materials Chemistry 11 (6) : 1704-1709. ScholarBank@NUS Repository. https://doi.org/10.1039/b100758k | |
dc.identifier.issn | 09599428 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/95123 | |
dc.description.abstract | A unique oil-in-water emulsion route has been devised to synthesize nanosized magnetite (Fe3O4) particles using a small amount of cyclohexane as the oil phase, NP5+NP9 as the surfactant phase, and a Fe(II)/Fe(III) salt solution as the aqueous phase. The Fe3O4 powder thus derived from the emulsion containing 88 wt% 0.3 M FeSO4 + Fe(NO3)3 in the aqueous phase possesses an equiaxial morphology and an average particle size of < 10 nm. Studies on the electrical conductivity of the emulsions as a function of Fe2+/Fe3+ concentration in the aqueous phase revealed the complexation effect of the NP5+NP9 surfactant towards Fe2+/Fe3+ ions. The resulting particle size and morphology are therefore dependent on the amounts of surfactant and aqueous phase in the emulsion. A strongly alkaline aqueous phase favors the formation of Fe3O4, while a low alkalinity favors the formation of α-FeOOH. Magnetic property measurements and Mössbauer spectroscopic studies indicate that the emulsion-derived iron oxide powder is superparamagnetic, which becomes ferrimagnetic with decreasing measurement temperature. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/b100758k | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CHEMISTRY | |
dc.contributor.department | MATERIALS SCIENCE | |
dc.description.doi | 10.1039/b100758k | |
dc.description.sourcetitle | Journal of Materials Chemistry | |
dc.description.volume | 11 | |
dc.description.issue | 6 | |
dc.description.page | 1704-1709 | |
dc.description.coden | JMACE | |
dc.identifier.isiut | 000168860400024 | |
Appears in Collections: | Staff Publications |
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