Synthesis and Characterization of Novel Coralloid Polyaniline/BaFe12O19 Nanocomposites

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• 作者：Ping Xu ; Xijiang Han ; Jingjing Jiang ; Xiaohong Wang ; Xuandong Li ; Aihua Wen
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：August 30, 2007
• 年：2007
• 卷：111
• 期：34
• 页码：12603 - 12608
• 全文大小：2613K
• 年卷期：v.111,no.34(August 30, 2007)
• ISSN：1932-7455

文摘

By supplying inorganic ferrite nanoparticles of different morphologies as nucleation sites, PANI/ferritenanocomposites with novel coralloid structures were synthesized successfully through a simple, conventional,and inexpensive one-step in situ polymerization method without the aid of any surfactant, organic dopant, ortemplate. As shown by XRD, FT-IR and UV-vis, there is no obvious chemical interaction between PANIand BaFe₁₂O₁₉ (BF) nanoparticles; that is, ferrite nanoparticles served only as the nucleation centers for thegrowth of PANI nanofibers, whereas the nanoparticles have an effect in reducing the diameters of the producedPANI nanofibers. PANI/BF nanocomposites are hard magnetic properties with alternative electricalconductivities and magnetic properties. The reflection loss of BF nanoparticles in 2-18 GHz was essentiallyenhanced upon PANI coating, and the frequency relating to maximum reflection loss shifts to a higher valuewith the increase in BF content because of the higher anisotropy field. With controllable electrical, magnetic,and electromagnetic properties, the prepared nanocomposites may have potential applications in chemicalsensors, gas separation, catalysis, microwave absorbing, and magnetoelectric devices.