Research output: Contribution to Journal/Magazine › Journal article › peer-review
| <mark>Journal publication date</mark> | 3/06/2010 |
|---|---|
| <mark>Journal</mark> | Sensors and Actuators B: Chemical |
| Issue number | 2 |
| Volume | 147 |
| Number of pages | 11 |
| Pages (from-to) | 642-652 |
| Publication Status | Published |
| <mark>Original language</mark> | English |
A nickel modified boron-doped diamond (Ni-BDD) electrode or nickel foil electrode were used in the nonenzymatic determination of glucose 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 glucose.
Glucose was determined to limits of 2.7 mu M with a sensitivity of 1.04 mu A mu M(-1) cm(-2) at the Ni-BDD electrode. The foil electrode was comparably sensitive achieving a limit of 1.8 mu M but a relatively lower sensitivity of 0.67 mu A mu M(-1) cm(-2). SEM analysis of the electrodes found the Ni-BDD to be modified by a quasi-random microparticle assembly, with approximately 7.6 mu g cm(-2) of nickel present on the surface. (C) 2010 Elsevier B.V. All rights reserved.