Synthesis and Characterisation of Iron Oxide Nanoparticles with Tunable Sizes by Hydrothermal Method

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The present study investigates the effect of different reaction times on the crystallinity, surface morphology and size of iron oxide nanoparticles. In this synthetic system, aqueous iron (III) nitrate (Fe(NO3)3·9H2O) nonahydrate, provided the iron source and triethylamine was the precipitant and alkaline agent. The as-synthesised iron oxide nanoparticles were characterised by X-ray diffraction (XRD), Rietveld analysis, Scanning Electron Microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Prolonged reaction times indicated the change on nanoparticle shape from elongated nanorods to finally distorted nanocubes. Analysis on the crystallinity of the iron oxide nanoparticles suggest that the samples mainly consist of two phases, which are Goethite (α-FeOOH) and Hematite (α-Fe2O3) respectively.
Original languageEnglish
Pages (from-to)176-181
Number of pages6
JournalMaterials Science Forum
Publication statusPublished - 17 Feb 2022
Event10th International Conference on Nanostructures, Nanomaterials and Nanoengineering - Fukuoka, Japan
Duration: 30 Oct 20212 Nov 2021


Part-funded by the Lloyd?s Register Foundation International Consortium of Nanotechnologies (ICON-2018-45) and part-funded by Institute for Clean Growth and Future Mobility (CGFM). The authors would like to acknowledge the help of Dr David Walker and the use of the X-Ray Diffraction Research Technology Platform (RTP) at the University of Warwick, with access provided via the Warwick Analytical Science Centre (WASC) seedcorn scheme under EPSRC grant EP/V007688/1.


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