Synthesis and growth of hematite nanodiscs through a facile hydrothermal approach

Xuchuan Jiang, Aibing Yu, Wenrong Yang, Yi Ding, Caixia Xu, Simon K H Lam

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16 Citations (Scopus)

Abstract

This study reports a facile hydrothermal method for the synthesis of monodispersed hematite (aFe2O3) nanodiscs under mild conditions. The method has features such as no use of surfactants, no toxic precursors, and no requirements of high-temperature decomposition of iron precursors in non-polar solvents. By this method, a-Fe2O 3 nanodiscs were achieved with diameter of 50 ? 10 nm and thickness of 6.5 nm by the hydrolysis of ferric chloride. The particle characteristics (e.g., shape, size, and distribution) and functional properties (e.g., magnetic and catalytic properties) were investigated by various advanced techniques, including TEM, AFM, XRD, BET, and SQUID. Such nanodiscs were proved to show unique magnetic properties, i.e., superparamagnetic property at a low temperature (e.g., 20 K) but ferromagnetic property at a room temperature ( 300 K). They also exhibit low-temperature (
Original languageEnglish
Pages (from-to)877 - 893
Number of pages17
JournalJournal of Nanoparticle Research
Volume12
Issue number3
DOIs
Publication statusPublished - 2010
Externally publishedYes

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