采用静电纺丝技术并结合溶胶-凝胶方法制备了LaFeO3微纳米纤维.用差热一热重分析(TG—DTA)、X射线衍射(XRD)、红外光谱(FTIR)、X射线光电子能谱和场发射扫描电镜(FE-SEM)对样品进行了表征.实验结果表明,390℃时钙钛矿结构的LaFeO3晶体开始形成,同时伴有少量微弱的La2OCO3和Fe2O3杂相存在,600℃煅烧获得正交钙钛矿结构的LaFeO3微纳米纤维,其纤维直径分布在300~600nm之间,其平均直径约为420nm,平均晶粒尺寸为28nm.
Perovskite structure LaFeO3 Micro-nanofiber was successfully fabricated via electrospinning combined with sol-gel technology. The samples of LaFeO3 micro-nanofiber were characterized by thermogravimetrydifferential thermal analysis ( TG-DTA ), X-ray diffraction ( XRD), Fourier transform infrared ( FTIR), X-ray photoelectron spectroscopy(XPS) and field emission scanning electron microscopy(FE-SEM) technology, respectively. The results show that the perovskite structure LaFeO3 crystals begin to form at 390 ℃, accompa- nied by a small amount of weak La202CO3 and Fe2O3 hybrid, the orthogonal perovskite structure LaFeO3 mi- cro-nanofiber is obtained by calcining at 600 ℃, the distribution of fiber diameter is between 300 and 600 nm, the average fiber diameter is about 420 nm with an average grain size of 28 nm.