Toghill, Kathryn E.Xiao, LeiStradiotto, Nelson Ramos [UNESP]Compton, Richard G.2014-05-202014-05-202010-03-01Electroanalysis. Weinheim: Wiley-v C H Verlag Gmbh, v. 22, n. 5, p. 491-500, 2010.1040-0397http://hdl.handle.net/11449/25861A nickel modified boron doped diamond (Ni-BDD) electrode and nickel foil electrode were used in the determination of methanol in alkaline solutions. The Ni-BDD electrode was electrodeposited from a 1 mM Ni(NO(3))(2) solution (pH 5), followed by repeat cycling in KOH. Subsequent analysis utilised the Ni(OH)(2)/NiOOH redox couple to electrocatalyse the oxidation of methanol. Methanol was determined to limits of 0.3 mM with a sensitivity of 110 nA/mM at the Ni-BDD electrode. The foil electrode was less sensitive achieving a limit of 1.6 mM and sensitivity of 27 nA/mM. SEM analysis of the electrodes found the Ni-BDD to be modified by a quasi-random microparticle array.491-500engNickel microparticlesBoron doped diamondElectrocatalysisAlcohol oxidationFuel cellsArtigo10.1002/elan.200900523WOS:000275802900001Acesso restrito0072173018005712