Electrocatalysis of the Oxygen Reaction on Electrodes Prepared Using Disperse Synthetic Diamond Promoted with Cobalt Porphyrin and Its Pyropolymer |
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| Authors: | G. V. Zhutaeva K. A. Radyushkina M. A. Marinich G. P. Bogatyreva M. R. Tarasevich |
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| Affiliation: | (1) Frumkin Institute of Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117071, Russia;(2) Bakul' Institute for Superhard Materials, National Academy of Sciences of Ukraine, Avtozavodskaya ul. 2, Kiev, 254153, Ukraine |
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| Abstract: | The oxygen electroreduction in acid solutions on electrodes of disperse synthetic diamond powder promoted with cobalt tetra(p-methoxyphenyl)porphyrin or its pyrolysis products is studied. A  floating gas-diffusion electrode and an RDE of isotropic pyrocarbon are used in experiments; in the latter case, the catalyst is immobilized in a Nafion solution. Two types of diamond, with specific area of 5.8 and 170 m2/g, are used. The results are compared with similar data found for promoted acetylene black. A significant effect of the carbon support on electrocatalytical properties of cobalt porphyrin pyrolyzed on it is found. |
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