A simple dissolved metals mixing method to produce high-purity MgTiO{sub 3} nanocrystals

• Published in: AIP conference proceedings 2014-02, Vol.1586 (1)
• Main Authors: Pratapa, Suminar, Baqiya, Malik A., Istianah, Lestari, Rina, Angela, Riyan
• Format: Article
• Language: English
• Subjects: CALCINATION; HYDROCHLORIC ACID; IMPURITIES; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; MAGNESIUM; MIXING; NANOSCIENCE AND NANOTECHNOLOGY; NANOSTRUCTURES; POWDERS; RUTILE; TITANATES; TITANIUM; X-RAY DIFFRACTION
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.4866726

A simple dissolved metals mixing method has been effectively used to produce high-purity MgTiO{sub 3} (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. MgTiO{sub 3}, with no Mg{sub 2}TiO{sub 4} or MgTi{sub 2}O{sub 5} 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.