Highly Sensitive Chemical Sensor Based on CuO Rosette-Like Nanostructures.

This paper reports the successful fabrication and characterization of phenyl hydrazine chemical sensor based on CuO rosette-like nanostructures. The CuO rosette-like nanostructures were synthesized by facile hydrothermal process at low-temperature and characterized in detail in terms of their morphological, structural and compositional properties. The detailed morphological studies revealed that the prepared CuO rosettes are made by the accumulation of hundreds of small CuO nanodisks which are arranged in a special fashion that they made rosette-like morphologies. The structural characterization, by X-ray diffraction (XRD), confirmed that the prepared CuO rosette-like structures are nanocrystalline and possessing monoclinic structure. The compositional studies further substantiates that the synthesized rosette-like morphologies are pure CuO. The fabricated phenyl hydrazine chemical sensor based on CuO rosette-like nanostructures exhibited very high sensitivity of -49.532710 μA/cm2 x mM. Due to high sensitivity, it can be concluded that CuO rosette-like nanostructures could be an effective candidate for the fabrication of highly sensitive phenyl hydrazine chemical sensors.