Preparation and Morphological Controlling of Nanophase NaNbO3 by Sol-gel Method

摘要：

　　With citric acid as chelating agent,ethylene alcohol as etherification agent and water as solvent,NaNbO3 nanopowder was synthesized by citrate sol-gel method.The effects of amount of CA and EG,pH value on the stability of the precursor sot were investigated.The evolution of NaNbO3 crystal phase was also investigated by XRD and TG-DTA.The results showed that a homogeneous precursor sol was formed at in the case ofn(CA) ∶ n(metal ion)=3∶1,n(CA) ∶ n(EG)=1∶ 2 and 1∶3 and pH=7.5.Sintering process largely influences the morphology of the prepared products.Grain-like nanoparticles could be obtained with a rapid temperature rising rate,while nanorods were obtained with a slow rate.The forming mechanism of different morphologies of the prepared nanoparticles was also discussed.

关键词： Sodium niobate Nanometer Polymeric precursor method Citrate

作者: Ying Lin Haibo Yang Fen Wang

作者单位: School of Materials Science and Engineering,Shaanxi University of Science & Technology,Xian 710021,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 140-143

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）