Iron-doped titanium dioxide nanoparticles as potential scaffold for hydrazine chemical sensor applications

Abstract

Herein, we report the fabrication of a modified glassy carbon electrode (GCE) with high-performance hydrazine sensor based on Fe-doped TiO2 nanoparticles prepared via a facile and low-cost hydrothermal method. The structural morphology, crystalline, crystallite size, vibrational and scattering properties were examined through different characterization techniques, including FESEM, XRD, FTIR, UV-Vis, Raman and photoluminescence spectroscopy FESEM analysis revealed the high-density synthesis of Fe-doped TiO2 nanoparticles with the average diameter of 25±5nm. The average crystallite size of the synthesized nanoparticles was found to be around 14 run. As-fabricated hydrazine chemical sensors exhibited 1.44 μA μM-1 cm-2 and 0.236 μM sensitivity and limit of detection (LOD), respectively. Linear dynamic ranged from 0.2 to 30 μM concentrations. Furthermore, the Fe-doped TiO2 modified GCE showed a negligible inference behavior towards ascorbic acid, uric acid, glucose, SO42-, NO3-, Pb2+ and Ca2+ ions on the hydrazine sensing performance. Thus, Fe-doped TiO2 modified GCE can be efficiently used as an economical, easy to fabricate and selective sensing of hydrazine and its derivatives.