Full length articleElectrochemical activity of the polycrystalline CERIUM OXIDE (cas 1345-13-7) films for hydrogen peroxide detection

Add time:09/02/2019    Source:sciencedirect.com

Polycrystalline CERIUM OXIDE (cas 1345-13-7) thin films (15 nm) deposited on a glassy carbon substrate were used as an electrode in a mediator-free, non-enzymatic electrochemical sensor for hydrogen peroxide. The electrode surface was characterized by X-ray photoelectron spectroscopy, resonant photoelectron spectroscopy, scanning electron microscopy and atomic force microscopy. The electrode sensitivity, detection limit and pH range of sensor stability were determined by applying electrochemical techniques: cyclic voltammetry and chronoamperometry. It was found that the sensor reactivity to H2O2 is directly related to the presence of electroactive cerium centres of 3+ character on the electrode surface. The Michaelis–Menten mechanism of catalase-like activity of ceria film is suggested as an explanation of the data and discussed. The results confirmed the sensing abilities of technologically well-accessible nanostructured cerium oxide films for hydrogen peroxide detection without using a mediator, i.e. the enzymatic properties of CeO2/GC electrode.

We also recommend Trading Suppliers and Manufacturers of CERIUM OXIDE (cas 1345-13-7). Pls Click Website Link as below: cas 1345-13-7 suppliers

Prev:Full Length ArticleExperimental study on evaporation characteristics of diesel/CERIUM OXIDE (cas 1345-13-7) nanofluid fuel droplets
Next:CERIUM OXIDE (cas 1345-13-7) nanocluster based nanobiosensor for ROS detection)