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首页> 外文期刊>Journal of Applied Polymer Science >Electrochemical preparation and characterization of conducting copolymer/silica composite
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Electrochemical preparation and characterization of conducting copolymer/silica composite

机译：导电共聚物/二氧化硅复合材料的电化学制备与表征

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摘要

A composite based on organic copolymer and inorganic oxide, polyaniline/poly o-toluidine/silica (PANI/POT/SiO2), has been synthesized successfully by a simple electrochemical method. The composite film was found to be deposited on a Pt substrate by sweeping the potential between -0.2 and +1.0 V versus a saturated calomel electrode with a scan rate of 100 mV/s. The polymeric Composite film thus obtained was characterized by scanning electron microscopy, infrared spectroscopy, conductance Measurement, and cyclic voltammetry techniques. Incorporation of silica in the copolymer results a clear difference in surface morphology compared with the bulk homo- and copolymers. Further evidence of silica in the composite was achieved by infrared spectral analysis. Indeed, a chemical analysis of the composite matrix showed a content of as high as 25% SiO2 in the composite thus prepared. Based on the results of cyclic voltammetric analysis, the composite electrode as prepared Was found to show good electrochemical stability even at high positive potentials. It also exhibited excellent electroactivity even after incorporation of silica in the matrix. The electroactive composite film was thus examined as electrode modifier to study the redox behavior of ferrous/ferric (Fe2+/Fe3+) and hydroquinone/benzoquinone (H(2)Q/Q) couples. (c) 2008 Wiley Periodicals, Inc.
机译：通过简单的电化学方法成功地合成了基于有机共聚物和无机氧化物的复合材料，聚苯胺/聚邻甲苯胺/二氧化硅（PANI / POT / SiO2）。通过以100 mV / s的扫描速率扫描相对于饱和甘汞电极的-0.2至+1.0 V之间的电势，发现复合膜沉积在Pt基板上。由此获得的聚合物复合膜通过扫描电子显微镜，红外光谱，电导测量和循环伏安技术进行表征。与本体均聚物和共聚物相比，二氧化硅在共聚物中的掺入导致表面形态的明显差异。通过红外光谱分析获得了复合物中二氧化硅的进一步证据。实际上，对复合材料基体的化学分析表明，由此制得的复合材料中的SiO2含量高达25％。基于循环伏安分析的结果，发现所制备的复合电极即使在高正电势下也显示出良好的电化学稳定性。即使在基质中掺入二氧化硅后，它也表现出优异的电活性。因此，将电活性复合膜作为电极改性剂进行了研究，以研究铁/铁（Fe2 + / Fe3 +）和氢醌/苯醌（H（2）Q / Q）对的氧化还原行为。 （c）2008 Wiley期刊公司

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