Fabrication of Graphene Oxide-MWCNTs Nanocomposite Modified Glassy Carbon Electrode for the Sensitive Determination of Amitrole

We have demonstrated a highly sensitive amperometric amitrole (3-Amino-1,2,4-triazole) sensor constructed with graphene oxide (GO) and multi walled carbon nanotubes (MWCNTs) through electrochemical potentiostatic approach. The characterization studies of GO-MWCNTs composite were performed using field emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and amperometric i-t techniques. The high performance of GO-MWCNTs modified electrode towards amitrole was confirmed from the resulting low over potential and well defined sharp peak currents. The high sensitivity (4300 mu A/mM cm(-2)) and low limit of detection (0.450 mu M) were attained by our fabricated electrode in a wide working potential range from 5 to 3545 mu M (linear range). GOMWCNTs film coated glassy carbon electrode (GCE) also offers considerable stability along with good repeatability and reproducibility. The demonstration of practicability for our fabricated modified electrode was achieved in lake and tap water samples.