Detection of several carbohydrates using boron-doped diamond electrodes modified with nickel hydroxide nanoparticles
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In this work the electrooxidations of glucose, galactose, mannose, rhamnose, xylose and arabinose are studied at a nickel hydroxide nanoparticle modified boron-doped diamond electrode and compared to an unmodified electrode. These carbohydrates are very important in the second-generation ethanol production process. Nickel hydroxide modified boron-doped diamond was characterized by scanning electron microscopy and energy dispersive X-ray. Electrochemical impedance spectroscopy was employed to study the interface properties of surface-modified electrodes in the absence and presence of the carbohydrates. Limits of detection were 5.3 × 10(-5), 6.8 × 10(-5), 2.7 × 10(-4), 6.9 × 10(-5), 8.8 × 10(-5) and 2.6 × 10(-5) mol L(-1) for glucose, galactose, mannose, rhamnose, arabinose, xylose, respectively.
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Carbohydrates, Nickel, Nanoparticles, Modified boron-doped diamond electrode, Voltammetry
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Analytical Sciences : The International Journal Of The Japan Society For Analytical Chemistry, v. 31, n. 8, p. 773-780, 2015.
