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

Autor(es)

Teixeira, Milena E. ^[1] ; Sedenho, Graziela C. ^[1] ; Stradiotto, Nelson R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Inst Chem, Dept Analyt Chem, BR-14800060 Araraquara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Analytical Sciences; v. 31, n. 8, p. 773-780, AUG 2015.
• Citações Web of Science: 3

Resumo

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 x 10(-5), 6.8 x 10(-5), 2.7 x 10(-4), 6.9 x 10(-5), 8.8 x 10(-5) and 2.6 x 10(-5) mol L-1 for glucose, galactose, mannose, rhamnose, arabinose, xylose, respectively. (AU)

• Processo FAPESP: 12/00258-5 - Desenvolvimento de novos métodos para determinação de açúcares, aldeídos furânicos e ácidos urónicos em materiais lignocelulósicos derivados de cana-de-açúcar
• Beneficiário: Nelson Ramos Stradiotto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular