Sugars Electrooxidation at Glassy Carbon Electrode Decorate with Multi-Walled Carbon Nanotubes with Nickel Oxy-Hydroxide

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Sugars Electrooxidation at Glassy Carbon Electrode Decorate with Multi-Walled Carbon Nanotubes with Nickel Oxy-Hydroxide

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Title: Sugars Electrooxidation at Glassy Carbon Electrode Decorate with Multi-Walled Carbon Nanotubes with Nickel Oxy-Hydroxide
Author: Sa, Acelino Cardoso de; Paim, Leonardo Lataro; Stradiotto, Nelson Ramos
Description: Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Processo FAPESP: 11/19289-5Processo FAPESP: 12/00258-5Processo FAPESP: 11/20416-1The glassy carbon electrode modified with carbon nanotubes decorated with nickel oxy-hydroxide (GC/MWCNT/NiOOH) was used to studied electro-oxidation of glucose, galactose, xylose, arabinose and mannose in alkaline medium. Kinetic parameters such as, charge-transfer coefficient, electrocatalytic rate constant and diffusion coefficient were determined for sugars. Galactose exhibited a higher charge-transfer coefficient (0.37) with a diffusion coefficient of 1.3x10(-6) cm(2) s(-1) and showed the higher electrocatalytic rate constant of 2.1x10(4) L mol(-1) s(-1). The modified electrode exhibited a linear response to sugars concentration in the range around of 2.5x10(-4) mol L-1 to 5.6x10(-3) mol L-1 and limits of detection around of 1.9x10(-4) mol L-1 -4.3x10(-4) mol L-1.
URI: http://connection.ebscohost.com/c/articles/99328080/sugars-electrooxidation-glassy-carbon-electrode-decorate-multi-walled-carbon-nanotubes-nickel-oxy-hydroxide
International Journal Of Electrochemical Science. Belgrade: Esg, v. 9, n. 12, p. 7746-7762, 2014.
1452-3981
http://hdl.handle.net/11449/116172
WOS:000345261900081
Date: 2016-04-20


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