Whelk-like helixes of polypyrrole synthesized by electropolymerization - 文章详情页

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A　whelk-like　helix　of　polypyrrole　was　synthesized　by　an　electropolymerization　process.　Its　structure　and　properties　were　characterized　by　scanning　electron　microscopy　(SEM),　X-ray　photoelectron　spectroscopy　(XPS),　and　cyclic　voltammetry.　The　high-resolution　SEM　images　clearly　show　the　whorls　around　the　polypyrrole　whelk　body;　these　whorls　have　ordered　periodic　nanostructures　on　their　surface.　XPS　analysis　indicates　that　the　polypyrrole　structure　is　highly　doped　with　sodium　dodecyl　sulfate,　the　chosen　dopant.　A　novel　spiral　growth　mechanism　is　proposed.　The　whelk-like　polypyrrole　layer　shows　high　thermal　stability,　superhydrophilicity,　and　strong　electrocatalytic　activity　towards　the　oxidation　of　ascorbic　acid.　©　2007　WILEY-VCH　Verlag　GmbH　&　Co.　KGaA.

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Cyclic voltammetry Doping (additives) Electropolymerization Polypyrroles Scanning electron microscopy Synthesis (chemical) Thermodynamic stability X ray photoelectron spectroscopy

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[ 1 ] [Chen, Ge]College of Environmental and Energy Engineering Beijing University of Technology (BUT-CEEE), Chaoyang District, 100022, Beijing, China
[ 2 ] [Wang, Zhenyao]College of Environmental and Energy Engineering Beijing University of Technology (BUT-CEEE), Chaoyang District, 100022, Beijing, China
[ 3 ] [Xia, Dingguo]College of Environmental and Energy Engineering Beijing University of Technology (BUT-CEEE), Chaoyang District, 100022, Beijing, China
[ 4 ] [Zhang, Lei]Institute for Fuel Cell Innovation National Research Council of Canada (NRC-IFCI), Vancouver, BC, V6T 1W5, Canada
[ 5 ] [Hui, Rob]Institute for Fuel Cell Innovation National Research Council of Canada (NRC-IFCI), Vancouver, BC, V6T 1W5, Canada
[ 6 ] [Zhang, Jiujun]Institute for Fuel Cell Innovation National Research Council of Canada (NRC-IFCI), Vancouver, BC, V6T 1W5, Canada

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