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Carbon Nanotubes Contain Metal Impurities Which Are Responsible for the “Electrocatalysis” Seen at Some Nanotube-Modified Electrodes



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Its all done with metals: The title statement is confirmed by comparing the electrocatalytic oxidation of hydrazine at a basal-plane pyrolytic-graphite (BPPG) electrode treated with iron(III) (blue) with that at a multiwalled-carbon-nanotube (MW-CNT)-modified BPPG electrode (red) and at an edge-plane pyrolytic graphite electrode (black; ⋅⋅⋅⋅⋅ and ⋅–⋅– are the responses of iron(III)-treated and MW-CNT-modified BPPG electrode, respectively, in the absence of hydrazine).