Details

Autor(en) / Beteiligte

• Miao, Xiang-Min
• Yuan, Ruo
• Chai, Ya-Qin
• Shi, Yin-Tao
• Yuan, Yan-Yu

Titel

Direct electrocatalytic reduction of hydrogen peroxide based on Nafion and copper oxide nanoparticles modified Pt electrode

Ist Teil von

• Journal of electroanalytical chemistry (Lausanne, Switzerland), 2008-01, Vol.612 (2), p.157-163

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2008

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A novel electrochemical sensor for the detection of hydrogen peroxide (H 2O 2) was proposed based on immobilizing Copper oxide nanoparticles (nano-CuO) on Nafion (Nf) membrane coated Pt electrode. Scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to confirm the successful stepwise assembly procedure of the sensor. The electrocatalytical behaviors of the sensor were also investigated by CV and Chronoamperometry. Tests showed that nano-CuO exhibited a remarkable electrocatalytic activity for the reduction of H 2O 2. Under optimal conditions, the electrocatalytic response of the sensor was proportional to the H 2O 2 concentration in the range of 0.15 μM–9.00 mM with a detection limit down to 0.06 μM at 3 σ, and achieved 95% of the steady-state current in 5 s. The low detection limit, wide linear range and high sensitivity of the sensor make it valuable for further application.