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Fabrication and characterization of silica/polypyrrole nanocomposites using silica sulfuric acid as templates

机译:以二氧化硅硫酸为模板的二氧化硅/聚吡咯纳米复合材料的制备与表征

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摘要

The sunflower-like silica core-polypyrrole (PPy) shell nanocomposites were prepared by using silica sulfuric acid as templates. The silica sulfuric acid was obtained by treating directly the silica nanoparticles with chlorosulfonic acid. The sulfonic groups (-SO_3H) on the surface of silica sulfuric acid not only offered the active sites for formation of polypyrrole particles but also acted as dopant agents in PPy. The nanostructures of sunflower-like silica/PPy nanocomposites and hollow PPy capsules were investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The molecular structure and content of PPy were determined by Fourier transform infrared (FTIR) and thermal gravimetric analysis (TGA), respectively. The highest conductivity of nanocomposites is 2.4 S/cm.
机译:以二氧化硅硫酸为模板制备了向日葵状二氧化硅核-聚吡咯(PPy)壳纳米复合材料。通过用氯磺酸直接处理二氧化硅纳米颗粒获得二氧化硅硫酸。二氧化硅硫酸表面的磺酸基(-SO_3H)不仅提供了形成聚吡咯颗粒的活性位点,而且还充当了PPy中的掺杂剂。通过扫描电子显微镜(SEM)和透射电子显微镜(TEM)研究了向日葵样二氧化硅/ PPy纳米复合材料和中空PPy胶囊的纳米结构。 PPy的分子结构和含量分别通过傅里叶变换红外(FTIR)和热重分析(TGA)确定。纳米复合材料的最高电导率为2.4 S / cm。

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