A novel method for synthesizing nano-crystalline MgTiO3 geikielite

[摘要] We report here for the first time a novel method of preparing nano-crystalline metatitanate, MgTiO₃ geikielite, with crystalline size varying from 20â€�??40 nm. The preparation has been carried out by coprecipitation method involving titanium hydroxide and magnesium nitrate solution. The samples were characterized by using transmission electron microscopic, powder XRD and FTâ€�?�IR spectroscopic studies. The sample annealed at 900 K for 2 h show ten X-ray diffraction peaks corresponding to the pure geikielite phase. FTâ€�?�IR spectra of the nano-crystalline geikielite exhibit strong broad vibrational bands near 1000, 650 and 470 cm^-1 arising from normal vibrations of the TiO₃ group.

[学科分类] 材料工程

[关键词] Nanomaterials;mineral;ceramics;geikielite;spectroscopic studies;Lunar minerals.