【摘要】 采用复合氢氧化物媒介法（CHM）,以BaCO₃和TiO₂为原料在200℃、48 h的生长条件下成功合成出Ba- TiO₃纳米单晶.用XRD,SEM,TEM等手段对产物的晶型、粒径进行了分析.检测结果显示,获得的BaTiO₃晶粒为立方相单晶,结晶好且不含BaCO₃等杂质,平均粒径约为70 nm.另外探讨了CHM法制备纳米BaTiO₃粉体的反应机理,解释了BaTiO₃物相的形成.更多还原

【Abstract】 Single crystalline BaTiO₃ nanoparticles starting from BaCO₃ and TiO₂ have been successfully syn- thesized by a composite-hydroxide-mediated（CHM）method at 200℃for 48 h.The morphology and parti- cle size were investigated by XRD,SEM and TEM.The as-synthesized BaTiO₃ sample showed a well-crys- talline cubic structure,with a particle size of about 70 nm and with no impurities like BaCO₂ and TiO₂ de- tected The reaction mechanism for the phase formation of BaTiO₃ is discussed.更多还原