Abstract
Platinum–cobalt PtxNi alloy nanoparticles have been successfully fabricated by the chemical reduction method, using carbon (Vulcan XC-72) as support. The resulting modified glassy carbon electrode shows excellent catalytic activity for the oxidation of glucose. Under physiological conditions, the oxidation current of glucose has two specific linear ranges of 2.0−420μM and 0.5–8.5mM, with high sensitivities of 1795.1μAmM−1cm−2 and 707.72μAmM−1cm−2, respectively. In addition, interference from the oxidation of ascorbic acid, uric acid, or acetamidophenol could be effectively avoided. The non-enzymatic glucose sensors based on this electrode exhibited excellent selectivity, stability, and repeatability. Thus, this novel non-enzyme sensor has potential application in glucose detection.
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