Sugars Electrooxidation at Glassy Carbon Electrode Decorate with Multi-Walled Carbon Nanotubes with Nickel Oxy-Hydroxide
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
18/03/2015
18/03/2015
01/12/2014
|
Resumo |
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Processo FAPESP: 11/19289-5 Processo FAPESP: 12/00258-5 Processo FAPESP: 11/20416-1 The 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. |
Formato |
7746-7762 |
Identificador |
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 |
Idioma(s) |
eng |
Publicador |
Esg |
Relação |
International Journal Of Electrochemical Science |
Direitos |
closedAccess |
Palavras-Chave | #Electrocatalytic rate constant of sugars #Kinetic parameters #Nickel oxy-hydroxide #Carbon nanotubes #Chemically modified electrodes |
Tipo |
info:eu-repo/semantics/article |