An Efficient Sensor for Determination of Concentrated Hydrogen Peroxide Based on Nickel Oxide Modified Carbon Paste Electrode

作者：Ojani Reza^*; Raoof Jahan Bakhsh; Norouzi Banafsheh

来源：International Journal of Electrochemical Science, 2012, 7(3): 1852-1863.

• Nickel hexacyanoferrate
• modified electrode
• hydrogen peroxide
• nickel oxide
• electrocatalytic oxidation

A new sensor for the analytical determination of hydrogen peroxide is proposed. This sensor was constructed by immobilizing nickel oxide film on the surface of carbon paste electrode, which was performed by derivatization of nickel hexacyanoferrate (NiHCF) in alkaline solution. Cyclic voltammetry experiments yielded evidence that nickel oxide facilitates hydrogen peroxide oxidation, showing excellent catalytic activity. Electrocatalytic oxidation of hydrogen peroxide occurs at a potential less positive than unmodified carbon paste electrode. This modified electrode has many advantages such as simple preparation procedure, good reproducibility and catalytic activity toward the hydrogen peroxide oxidation. Such characteristics were explored for the specific determination of hydrogen peroxide in cosmetics product sample, giving results in excellent agreement with those obtained by standard method.

• 出版日期2012-3