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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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特殊形貌的PANI/CeO2的电化学制备
DOI: 10.3724/SP.J.1037.2011.00483, PP. 508-512
Keywords: 聚苯胺,CeO2,复合膜,电化学共沉积
Abstract:
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(CeO2)的电化学共沉积,制备了PANI/CeO2复合膜.利用SEM,TEM和电子衍射(EDP)观测了PANI/CeO2复合膜的形貌和结构,利用Fourier变换红外光谱(FTIR)研究了PANI/CeO2复合膜的组成,利用循环伏安法研究了PANI/CeO2复合膜的电化学行为.研究了电化学沉积条件对PANI/CeO2复合膜形貌的影响.结果表明,在1.1V(vsSCE)进行PANI与CeO2的电化学共沉积时,由于苯胺电化学聚合和CeO2电化学沉积过程中均释放一定量的H+,PANI/CeO2复合膜以“羊角”形貌存在;而0.8V电化学沉积的复合膜则以纳米颗粒形式存在.“羊角”形的PANI/CeO2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.
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