Abstract
Here we report the synthesis of NiO nanostructures via glyoxomat assisted precipitation protocol using hydrothermal route under the influence of ammonia followed by annealing at 450(o)C. These nanostructures were characterized via Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) method. The morphological investigation of the finally prepared NiO revealed foam-like porous nanostructures. These NiO nanostructures were immobilized onto glassy carbon electrode (GCE) with nafion as binding material and used as highly sensitive and selective sensor for determining hydrazine in the range of 100-500nM and 600-1600nM with a calculated limit of detection (LOD) equal to 5nM. The as prepared sensor was tested for the presence of various interfering species such as Na+, Cu2+, uric acid, hydrogen peroxide and glucose in the presence of equimolar concentration of hydrazine and negligible interference was noticed. The sensor was further tested for hydrazine detection using square wave voltammetry (SWV) however it only worked in the range of 50-1200M. Finally the sensor was successfully implemented for hydrazine determination in real water samples using amperometric protocol.