锰酸镧微/纳米纤维的制备和表征  

Fabrication and Characterization of LaMnO_3 Micro/Nano Fibers

作　　者：赵从兆[1] 柳巍[1] 黄蕾[1] 

机构地区：[1]山东理工大学材料科学与工程学院,淄博255049

出　　处：《硅酸盐通报》2008年第1期64-66,共3页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(No.59783001);山东省自然科学基金资助项目(No.Y2006B41);山东省教育厅资助项目(No.J6A53)

摘　　要：以聚乙烯吡咯烷酮（PVP）为络合剂与Mn（CH3COO）2和La（NO3）3·6H2O反应制得前驱体,用静电纺丝法制备了PVP/Mn（CH3COO）2·La（NO3）3纤维,经焙烧得到具有高比表面积的LaMnO3微/纳米纤维。采用红外光谱（IR）、X射线衍射（XRD）、扫描电镜（SEM）等现代分析手段对所制备的纤维进行了表征。结果表明：焙烧后纤维的直径明显减小,在150～300nm之间;PVP特征吸收峰消失,新生成的M（La,Mn）-O吸收峰随着焙烧温度的升高而变强;XRD分析出现相应氧化物的特征峰,说明有LaMnO3的生成。PVP/ Mn （CH3COO）2·La （NO3 ）3 composite fibers were prepared by electrospinning technique with manganese acetate and PVP as starting materials. After calcining the above precursor fibers, LaMnO3 micro/nano fibers were obtained successfully. The LaMnO3 micro/nano fibers were characterized by FTIR, XRD and SEM, respectively. Results showed that the crystalline phase and morphology of LaMnO3 fibres were greatly changed by the calcination temperature.

关 键 词：静电纺丝法 微/纳米纤维 锰酸镧 聚乙烯吡咯烷酮 

分 类 号：O611[理学—无机化学]