Synthesis of Barium Titanate Nanoparticies from Decomposition of Barium Titanyl Oxalate Tetrahydrate with Aid of Supercritical Water

摘要：

A novel process of BaTiO3 manufacture was conducted by using supercritical water.Preparation of BaTiOs nanoparticies was investigated from decomposition of BaTiO(C2O4)2·H2O(BTOT)with aid of supercritical water for the first time.When BTOT was exposed to supercritical water around 673 K and 30 MPa,it decomposed quickly in 5-22 seconds.The products formed strongly reply on environmental conditions.BaCO3 and TiOi were always observed as the products in the absence of alkaline additives.BaTiO3 nanoparticies with specific surface area as high as 12~14 m2/g were able to be obtained under strong alkaline conditions,such as NaOH/CO2=2/l.It was found that environment of supercritical water was better than sub-critical conditions to obtain high quality BaTiO3 particles with fewer defects.Employment of supercritical water significantly reduced the reaction time and temperature compared to other BaTiO3 manufacture processes utilizing BTOT as precursor.

关键词： Synthesis BaTiO3 Nanoparticies Supercritical water Barium Titanyl Oxalate

作者: Jintao HUANG Tomoya IMURA Norimasa SAKAMOTO

作者单位: TDK Xiamen Co.,Ltd.,Fujian,Xiamen,361021,China Materials & Process Development Center,TDK Corporation,570-2,Matsugasrtita,Minamihatori,Narita,Chiba

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Advanced Material Research(2012 第二届先进材料研究国际会议 ICAMR2012)

会议地点: 成都

会议语种:英文

页码: 781-787

在线出版日期: 2012-01-07（万方平台首次上网日期，不代表论文的发表时间）