Abstract
In this report, we describe the finding that bamboo‐structured carbon nanotubes (CNT) showed superior electrocatalytic activity toward hydrogen peroxide. The slope of the calibration curve for hydrogen peroxide obtained with the bamboo‐structured CNT paste electrode was more than 20 times as large as the slopes obtained with hollow‐structured CNT paste and glassy carbon electrodes at an operating potential of −0.1 V, with no interfering reactions. Incorporation of glucose oxidase within the bamboo‐structured CNT paste electrode allows the selective detection of glucose in the presence of common interferents without using any permselective membranes. This excellent ability of the bamboo‐structured CNT paste electrode toward hydrogen peroxide is applicable to the development of other enzymatic biosensors.
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