Abstract
Mesoporous carbon prepared by template synthesis using SBA-15 mesostructured silicate material was tested as an electrocatalyst for electrochemical synthesis of Н2О2 from О2 in a two-layer gas-diffusion electrode. Preparative syntheses of Н2О2 in 0.06 to 2.0 M aqueous solutions of various electrolytes (pH 2–8) were performed at current densities in the interval 0.05–0.19 A cm–2. Solutions with an Н2О2 concentration of 1–2.8 M were prepared with 46–70% current efficiency. Thus, the material tested shows promise as an electrocatalyst of two-electron reduction of oxygen to Н2О2.
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Original Russian Text © G.A. Kolyagin, G.V. Kornienko, V.L. Kornienko, I.V. Ponomarenko, 2017, published in Zhurnal Prikladnoi Khimii, 2017, Vol. 90, No. 7, pp. 935−939.
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Kolyagin, G.A., Kornienko, G.V., Kornienko, V.L. et al. Electrochemical reduction of oxygen to hydrogen peroxide in a gas-diffusion electrode based on mesoporous carbon. Russ J Appl Chem 90, 1143–1147 (2017). https://doi.org/10.1134/S1070427217070187
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DOI: https://doi.org/10.1134/S1070427217070187