Synthesis, Characterization, and Application of TiO2 Nanorods for Hydrazine Sensing

Abstract

This paper presents a comprehensive investigation into the synthesis, characterization, and application of titanium dioxide (TiO2) nanorods for the purpose of hydrazine chemical sensing. The nanorods were efficiently prepared through a low-temperature chemical synthesis process, and a detail characterization process was undertaken to assess their structural, morphological, compositional, and sensing properties. Employing sophisticated techniques such as field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), the morphological characterizations unveiled a high-density growth of diminutive nanorods. Crystallographic examinations confirmed the exceptional crystallinity of the synthesized nanorods, showcasing a predominant anatase phase. These insights into the structural and morphological attributes contribute to a profound understanding of the nanorods’ potential in various applications. Notably, this study focuses on the utilization of TiO2 nanorods as electron mediating materials for the fabrication of a hydrazine chemical sensor. The fabricated sensor exhibited commendable sensitivity, registering a current response of 4.69 μA·μM−1·cm−2, coupled with a remarkably low detection limit of 174 μM. The outcomes of this investigation underscore the promising role of TiO2 nanorods as effective electron mediators in chemical sensor design. This work establishes a foundation for the development of sensors capable of detecting a spectrum of hazardous and toxic chemicals, with a specific emphasis on hydrazine.