SYNTHESIS OF SnO_2 NANOCRYSTALS BY SOLID STATE REACTION FOLLOWED BY CALCINATION

• 出 处: China Particuology Science and Technology of Particles
• 发表日期: 2004年04期
• 关键词: calcined SOLID synthesize calcination crystallinity distortion selectivity disul

Nanocrystalline SnO2 was synthesized by direct mixing and grinding of SnCl45H2O and NaOH at room temperature, followed by calcination at different temperatures for different times in air. Product samples were character-ized by X-ray diffraction and transmission electron microscope, revealing that the amorphous precursor SnO2 was transformed to crystals at 200 oC for 3 h, and that the average particle size increased upon raising the calcining tem-perature or prolonging the calcining time. The mechanism of the phase transformation of the products is discussed.

Nanocrystalline SnO2 was synthesized by direct mixing and grinding of SnCl45H2O and NaOH at room temperature, followed by calcination at different temperatures for different times in air. Product samples were character-ized by X-ray diffraction and transmission electron microscope, revealing that the amorphous precursor The mechanism of the phase transformation of the products is discussed.