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Zinc Oxide Modified Au Electrode as Sensor for an Efficient Detection of Hydrazine
Author(s) -
Sultana Wajeeha,
Ghosh Somnath,
Eraiah B.
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201200210
Subject(s) - amperometry , hydrazine (antidepressant) , detection limit , electrode , materials science , electrochemistry , zinc , inorganic chemistry , buffer solution , phosphate buffered saline , electrochemical gas sensor , nanoparticle , nuclear chemistry , chemistry , nanotechnology , chromatography , metallurgy
ZnO nanoparticles (ZnO NPs) prepared by microwave heating technique are used to modify a gold electrode (ZnO/Au) for the hydrazine detection study. The synthesized product is well characterized by various techniques. Detailed electrochemical investigation of the oxidation of hydrazine on the ZnO/Au electrode in 0.02 M phosphate buffer solution (PBS) of pH 7.4 was carried out. A very low detection limit of 66 nM ( S / N =4) and a wide linearity in current for a concentration range from 66.0×10 −3 to 415 µM was achieved by amperometry. The electrode was found to be stable for over a month when preserved in PBS.