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采用恒电位法,以石墨箔为工作电极,通过聚苯胺(PANI)和二氧化铈(CeO_2)的电化学共沉积,制备了PANI/CeO_2复合膜.利用SEM,TEM和电子衍射(EDP)观测了PANI/CeO_2复合膜的形貌和结构,利用Fourier变换红外光谱(FTIR)研究了PANI/CeO_2复合膜的组成.利用循环伏安法研究了PANI/CeO_2复合膜的电化学行为.研究了电化学沉积条件对PANI/CeO_2复合膜形貌的影响.结果表明,在1.1 V(vs SCE)进行PANI与CeO_2的电化学共沉积时,由于苯胺电化学聚合和CeO_2电化学沉积过程中均释放一定量的H~+,PANI/CeO_2复合膜以“羊角”形貌存在;而0.8 V电化学沉积的复合膜则以纳米颗粒形式存在.“羊角”形的PANI/CeO_2复合膜上形成很多上部宽大、底部稍窄的楔形空间,有利于客体粒子进入复合膜深处与活性组分充分接触,提高性能.复合膜的FTIR谱上出现了PANI的典型振动吸收,循环伏安测试结果表明复合膜主要呈现PANI的电化学性能.
PANI / CeO_2 composite films were prepared by electrochemical potentiostatic deposition of polyaniline (PANI) and cerium oxide (CeO 2) by potentiostatic method using graphite foil as the working electrode.Using SEM, TEM and EDP The morphology and structure of PANI / CeO_2 composite films were investigated by Fourier transform infrared spectroscopy (FTIR) to study the composition of PANI / CeO_2 composite films. The electrochemical behavior of PANI / CeO_2 composite films was investigated by cyclic voltammetry. Effect of Electrochemical Deposition Conditions on the Morphology of PANI / CeO_2 Composite Films The results show that when PANI / CeO 2 is electrochemically deposited at 1.1 V (vs SCE) The amount of H ~ + and PANI / CeO_2 composite films were in the shape of “claw”, while that of 0.8 V electrochemical deposition was in the form of nano-particles. Forming a lot of wedge-shaped space with a large upper part and a narrow bottom part, which is favorable for the guest particles to fully contact with the active component in the depth of the composite film and improve performance. The FTIR spectrum of the composite film shows the typical vibrational absorption of PANI and the cyclic voltammetry results Show that the composite film mainly PANI electrochemical can.