Abstract
A non-enzyme nanosized Pt flower based amperometric sensor for hydrogen peroxide (H2O2) is developed. Pt flower were deposited on the gold plated with the method of potentiostatic deposition. The performance of nanosized Pt flower electrode has been characterized with cyclic voltammetric technique and spectroscopic measurements. The Pt nanoparticle can effectively catalyzes the oxidation of H2O2 at a favorable potential. The prepared sensor exhibited low detection limit, and quite long-term stability, and it could detect H2O2 without any additional mediator or enzyme. The linear range of the Pt/Au electrode toward H2O2 is 0.1–0.9 mM, and the detection limit of 0.06 mM was obtained according to 3σ rule. Because of its sensitivity and biocompatibility, it can be used for real sample analysis. The recovery ratio was of 97–106 %, which indicated that the accuracy of this method is also satisfied. It may be widely used in chemical, biological, clinical, food, and environmental fields.
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