A simple dissolved metals mixing method to produce high-purity MgTiO3 nanocrystals

A simple dissolved metals mixing method has been effectively used to produce high-purity MgTiO3 (MT) nanocrystals. The method involves the mixing of independently dissolved magnesium and titanium metal powders in hydrochloric acid followed by calcination. The phase purity and nanocrystallinity were...

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Bibliographic Details
Main Authors: Pratapa Suminar, Baqiya, Malik A, Istianah, Lestari Rina, Riyan, Angela
Format: Conference Proceeding
Language:English
Subjects:
Crystallites
Electron micrographs
Hydrochloric acid
Magnesium titanates
Metal powders
Nanocrystals
Periclase
Purity
Roasting
Titanium
X-ray diffraction
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Summary:A simple dissolved metals mixing method has been effectively used to produce high-purity MgTiO3 (MT) nanocrystals. The method involves the mixing of independently dissolved magnesium and titanium metal powders in hydrochloric acid followed by calcination. The phase purity and nanocrystallinity were determined by making use of laboratory x-ray diffraction data, to which Rietveld-based analyses were performed. Results showed that the method yielded only one type magnesium titanate powders, i.e. MgTiO3, with no Mg2TiO4 or MgTi2O5 phases. The presence of residual rutile or periclase was controlled by adding excessive Mg up to 5% (mol) in the stoichiometric mixing. The method also resulted in MT nanocrystals with estimated average crystallite size of 76±2 nm after calcination at 600°C and 150±4 nm (at 800°C). A transmission electron micrograph confirmed the formation of the nanocrystallites.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4866726