M. Taei, H. Salavati, S. Banitaba
Nov 15, 2017
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Influential Citations
2
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Journal
IEEE Sensors Journal
Abstract
This paper describes the synthesis and application of a new carbonitrile derivative in order to determine hydrazine. First, 2-amino-4H-chromene-3-carbonitrile molecules were immobilized on the cleaned surface of the electrode. Then, the nano-sized gold nanoparticles were electrochemically synthesized on the surface of this carbonitrile layer (AuNPs/AHC/GCE). The surface morphology authenticated that gold nanoparticles and AHC satisfactorily covered the surface of the electrode. The AuNPs/AHC/GCE acted as a sensor for the electrocatalytic determination of hydrazine. In fact, the presence of AHC and AuNPs reduced the oxidation potential of hydrazine with a significant increase in its oxidation current. In optimal conditions, the calibration plot of electrocatalytic current versus hydrazine concentration showed two dynamic ranges, 5.0–1.970 mmol L−1 and 1.970–11.768 mmol L−1, with a low detection limit of 20.0 nmol L−1. Finally, the effect of various species was investigated in hydrazine determination, and the results showed that this method is applicable in detecting hydrazine in water and urine samples with high selectivity and sensitivity. Au nanoparticles, Glassy carbon electrode, Hydrazine, 2-amino-4H-chromene-3-carbonitrile.