Rapid surfactant-free synthesis of Mg(OH)2 nanoplates and pseudomorphic dehydration to MgO
Magnesium hydroxide nanoplates ca. 50 nm in thickness can be prepared over minute timescales via hydrothermal synthesis in a multimode cavity (MMC) microwave reactor. This approach allows ca. 1 g of single-phase Mg(OH)2 to be synthesised in under 3 minutes without the requirement of surfactants or non-aqueous solvents. The hydroxide nanomaterial dehydrates at temperatures >200 K below that of the equivalent bulk material and can be utilised as a precursor for the pseudomorphic synthesis of nanoplates of MgO as investigated by TG-DTA-MS, XRD and SEM measurements. Equally, the pseudomorphic synthesis can be performed by irradiating the MgIJOH)2 nanomaterial with microwaves for 6 minutes to produce single-phase MgO.
HANLON James;
BRAVO DIAZ Laura;
BALDUCCI Giulia;
STOBBS Blane;
BIELEWSKI Marek;
CHUNG Peter;
MACLAREN Ian;
GREGORY Duncan;
2015-09-18
ROYAL SOC CHEMISTRY
JRC93096
1466-8033,
http://pubs.rsc.org/en/content/articlepdf/2015/ce/c5ce00595g,
https://publications.jrc.ec.europa.eu/repository/handle/JRC93096,
10.1039/c5ce00595g,
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