Detection of Several Carbohydrates Using Boron-doped Diamond Electrodes Modified with Nickel Hydroxide Nanoparticles

Milena E Teixeira; Graziela C Sedenho; Nelson R Stradiotto

doi:10.2116/analsci.31.773

Detection of Several Carbohydrates Using Boron-doped Diamond Electrodes Modified with Nickel Hydroxide Nanoparticles

Anal Sci. 2015;31(8):773-80. doi: 10.2116/analsci.31.773.

Authors

Milena E Teixeira¹, Graziela C Sedenho, Nelson R Stradiotto

Affiliation

¹ Department of Analytical Chemistry, Institute of Chemistry, Universidade Estadual Paulista (UNESP).

PMID: 26256600
DOI: 10.2116/analsci.31.773

Abstract

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.