PAN/CoFe_2O_4纳米复合物的制备及表征  

Synthesis and Characterization of Polyaniline/Cobalt Ferrite Nanocomposite

作　　者：廖学红[1] 吴燕[1] 

机构地区：[1]黄冈师范学院化学与应用化学学院,湖北黄冈438000

出　　处：《微纳电子技术》2010年第1期25-28,49,共5页Micronanoelectronic Technology

基　　金：湖北省教育厅重点基金资助项目(D200627001)

摘　　要：以硝酸铁、硝酸钴和柠檬酸为原料,通过溶胶-凝胶微波加热自蔓延燃烧法制备出了纯的立方尖晶石型铁酸钴(CoFe2O4)纳米粒子,然后通过原位聚合将聚苯胺(PAN)对所得粒径约20～30nm铁酸钴纳米粒子进行了包覆,制得了PAN/CoFe2O4纳米复合物。通过傅里叶变换红外光谱(FTIR)、透射电子显微镜(TEM)、X射线衍射(XRD)等测试手段对所得产物的形貌和结构进行了表征。结果表明,PAN链段与CoFe2O4纳米粒子之间存在作用力,通过原位聚合制得的PAN包覆在CoFe2O4纳米粒子表面,X射线粉末衍射和红外光谱进一步证实了PAN/CoFe2O4纳米复合物的形成。荧光分析结果表明,引入CoFe2O4纳米粒子后PAN荧光强度增强。The pure cubic cobalt ferrite（CoFe2O4）nanoparticles were prepared by sol-gel microwave heating self-propagating combustion method using Co（NO3）2·6H2o, Fe（NO3）3·9H2O and citric acid as raw materials in an appropriate proportion. Then, the polyaniline （PAN）/ CoFe2O4 nanocomposites were synthesized by in-situ polymerization of aniline in the presence of CoFe2O4 nanoparticles with 20- 30 nm diameters. The morphology and structure of as-prepared nanocomposites were characterized by Fourier transform infrared（FTIR）spectroscopy, transmis- sion electron microscopy（TEM）, and powder X-ray diffraction（XRD）. The results show that there is an interaction force between PAN chains and CoFe2O4 particles, and the PAN is covered on the surface of CoFe2O4 nanoparticles. The formation of PAN/CoFe2O4 nanocomposites is further confirmed by X-ray powder diffraction and infrared spectra. The results of fluorescence spectroanalysis indicate that the fluorescent intensity of PAN is enhanced with CoFe2O4 nanoparticles.

关 键 词：聚苯胺 铁酸钴 纳米复合物 原位聚合 合成 荧光特性 

分 类 号：O611.4[理学—无机化学] O633.21[理学—化学]