Journal
MICROCHIMICA ACTA
Volume 183, Issue 5, Pages 1787-1796Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-016-1809-4
Keywords
Tungstophosphate-PAni; Silver nanocomposite; Hydrazine; Conductive polymer; I-Vmethod; Glassy carbon electrode; Field-emission scanning electron microscopy; Energy dispersive spectroscopy
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Funding
- Center of Excellence for AdvancedMaterials Research (CEAMR), King Abdulaziz University, Jeddah [CEAMR-SG-7-436]
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A nanocomposite consisting of silver nanoparticle-decorated polyaniline and tungstophosphate was deposited on a glassy carbon electrode to result in an improved electrochemical sensor for dissolved hydrazine by the I-V (current-voltage) technique. The sensor, if operated at +0.5 V, has a fast response time (10 s), good sensitivity (similar to 12.5 mu Aa <...mM(-1)a <...cm(-2)) and long-term stability. Response to hydrazine is linear in the 10 nM to 10 mM concentration range, and the detection limit is 2.8 nM at a signal-to-noise ratio of 3.
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