Premium
The Determination of Methanol Using an Electrolytically Fabricated Nickel Microparticle Modified Boron Doped Diamond Electrode
Author(s) -
Toghill Kathryn E.,
Xiao Lei,
Stradiotto Nelson R.,
Compton Richard G.
Publication year - 2010
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200900523
Subject(s) - electrode , nickel , diamond , materials science , methanol , detection limit , foil method , electrochemistry , boron , nuclear chemistry , inorganic chemistry , analytical chemistry (journal) , chemistry , metallurgy , chromatography , composite material , organic chemistry
A 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.