期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 10, 期 3, 页码 168-175出版社
SPRINGER
DOI: 10.1007/s10008-005-0059-x
关键词
phosphomolybdate; monolayers; carbon particles; poly(diallyldimethylammonium) chloride; poly(3, 4-ethylenedioxytiophene); organic-inorganic networks; multilayer composite films
Using the layer-by-layer technique, carbon submicroparticles, that have been modified and stabilized with monolayers of Keggin-type phosphododecamolybdate (PMo12O403-) can be dispersed in multilayer films of organic polymers, poly(3,4-ethylenedioxythiophene), i.e., PEDOT, or poly(diallyldimethylammonium) chloride, i.e., PDDA, deposited on glassy carbon or indium-tin oxide conductive glass electrodes. The approach involves alternate treatments in the colloidal suspension of PMo12O403- covered carbon submicroparticles in the solution of monomer, 3,4-ethylenedioxythiophene or in solution of PDDA polymer. Electrostatic attractive interactions between anionic phosphomolybdate-modified carbon submicroparticles and cationic polymer layers permit not only uniform and controlled growth of the hybrid organic-inorganic film but also contribute to its overall stability. The system composed of PMo12O403- -covered carbon submicroparticles dispersed in PEDOT is characterized by fast dynamics of charge transport and has been used to construct symmetric microelectrochemical redox capacitor. The PDDA-based system has occurred to be attractive for electrocatalytic reduction of hydrogen peroxide.
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