Fabrication of a Highly Sensitive Hydrazine Electrochemical Sensor Based on Bimetallic Au-Pt Hybrid Nanocomposite onto Modified ElectrodeReport as inadecuate




Fabrication of a Highly Sensitive Hydrazine Electrochemical Sensor Based on Bimetallic Au-Pt Hybrid Nanocomposite onto Modified Electrode - Download this document for free, or read online. Document in PDF available to download.

Nano-Micro Letters

, Volume 2, Issue 4, pp 296–305

First Online: 20 January 2011Received: 30 November 2010Accepted: 08 January 2011

Abstract

In this research a novel nickel complex was used as electrocatalyst for electrooxidation of hydrazine. A nano-structured nickel-complex was electrodeposited on a bimetallic Au-Pt inorganic-organic hybrid nanocomposite modified electrode. The electrode possesses a three-dimensional 3D porous network nanoarchitecture, in which the bimetallic Au-Pt NPs serving as metal nanoparticle based microelectrode ensembles are distributed in the matrix of interlaced 3, 3′, 5, 5′-Tetramethylbenzidine TMB organic nanofibers NFs. Surface structure and composition of the sensor was characterized by scanning electron microscopy. Electrocatalytic oxidation of hydrazine on the surface of modified electrode was investigated with cyclic voltammetry method. The results showed that the nickel-complex films displayed excellent electrochemical catalytic activities towards hydrazine oxidation. The hydrodynamic amperometry at rotating modified electrode at constant potential versus reference electrode was used for detection of hydrazine. Under optimized conditions the calibration plots were linear in the concentration range of 0.2–85 μM and detection limit was found to be 0.1 μM. The modified electrode exhibited reproducible behavior and a high level stability during the electrochemical experiments, making it particularly suitable for the analytical purposes.

Keywords3, 3′, 5, 5′-Tetramethylbenzidine Hydrazine Nanocomposite electrodes Nanofiber  Download to read the full article text



Author: Azadeh Azadbakht - Amir Reza Abbasi

Source: https://link.springer.com/







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