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首页> 外文期刊>Journal of Applied Polymer Science >MnO2/Cr2O3/PANI nanocomposites prepared by in situ oxidation polymerization method: Optical and electrical behaviors
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MnO2/Cr2O3/PANI nanocomposites prepared by in situ oxidation polymerization method: Optical and electrical behaviors

机译：通过原位氧化聚合方法制备MnO2 / Cr2O3 / PANI纳米复合材料：光学和电气行为

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摘要

Metal oxide-polyaniline (PANI) nanocomposite with spherical morphologies were prepared in a one-pot oxidation-reduction method via various salts as reactive oxidants. Aniline monomers polymerize as a shell on the surface of one-pot prepared metal oxides, when the aqueous solutions of aniline, a free-radical oxidant, and/or a metallic salt were exposed together. The particle size and morphology of as-prepared narrowly dispersed PANI nanocomposites were revealed by field emission scanning electron microscope images. Fourier transform infrared spectra of nanocomposites indicate that the PANI exists in the emeraldine form. The ultraviolet-visible analysis not only shows PANI is in the emeraldine form, but also indicates modified optical properties of PANI in the composite form. The hypsochromic shift of the n-pi* and polaron transitions of PANI reveals the incorporation of PANI by metal oxides. The direct current (dc) electrical conductivity (sigma) of as-prepared nanocomposites was measured by a four-probe method in the room temperature. Compared to PANI nanoparticles, the electrical conductivity of the composites increased with the presence of metal oxides in the nanocomposites. (C) 2018 Wiley Periodicals, Inc.
机译：通过各种盐作为反应性氧化剂在一种单盆氧化还原方法中制备具有球形形态的金属氧化物 - 聚苯胺（PANI）纳米复合材料。当苯胺的水溶液，自由基氧化剂和/或金属盐一起暴露在一起时，苯胺单体在一锅制备的金属氧化物表面上聚合为一锅制备的金属氧化物。通过现场发射扫描电子显微镜图像揭示了用狭窄分散的PANI复合材料的粒度和形态。纳米复合材料的傅里叶变换红外光谱表明PANI存在于欧洲形式中。紫外线可见分析不仅显示PANI处于祖髓形式，还表明了在复合形式中PANI的改性光学性质。 PANI的N-PI *的低温变化和PANI的极化转变显示通过金属氧化物掺入PANI。通过在室温下通过四探针方法测量制备的纳米复合材料的直流（DC）电导率（Sigma）。与PANI纳米颗粒相比，复合材料的电导率随纳米复合材料中的金属氧化物的存在而增加。 （c）2018 Wiley期刊，Inc。

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