Low temperature synthesis of hollow La2Mo2O9 spheres by the molten salt solvent method

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

“…The nature of chemical bonding between Sr 2+ , Ti 4+ and O 2ions in ABO 3 cubic perovskite structure leads to a unique structure which makes it a very interesting electronic material. Functional properties of SrTiO 3 are strongly influenced by its crystal defects, particle size, morphology, etc., which ultimately depend on the preparation methods and conditions [8][9][10]. State-of-the-art application requires homogeneous micrograin ceramic materials with low impurity levels, smaller particle sizes and narrow size distribution, making alternative low-cost effective methods for large-scale production of phase-pure and…”

Ageing-assisted room temperature synthesis of La2Mo2O9 powders

“…Meanwhile, the surfaces of particles are shown to be rough and composed of nano-particles ( Fig. 1 (c)), which have a size in the scale of about several tens nano-meters and have been proved to be single crystalline particles in our previous study [14]. Moreover, this phenomenon would be more clearly with the aging time increasing.…”

“…In our previous studies, we had successfully prepared La 2 Mo 2 O 9 hollow microspheres via the molten solvent salt route (MSSR) in the presence of KCl, KNO 3 and LiNO 3 , employing La (NO 3 ) 3 $nH 2 O, (NH 4 ) 6 Mo 7 O 24 $4H 2 O as the starting reactants [14].Considering the MSSR was usually used to prepare nano-particles at relatively low temperature [15], we conceived that in the presences of multiple salts, the spherical La 2 Mo 2 O 9 products might be synthesized at room temperatures. So, in this communication, we made such an attempt and had developed an aging-assisted salt approach (AASA) for the synthesis of La 2 Mo 2 O 9 and La 2 Mo 2 O 9 micro-spheres with hollow structure were successfully prepared at room temperatures.…”