Hydrothermal synthesis of nanostructured NiO for hydrazine sensing application

In last few years, nickel oxide (NiO) has been widely explored in different optoelectronic applications. Herein, we reported synthesis of nanostructured NiO under facile conditions. The prepared nanostructured NiO was characterized by advanced techniques (XRD, SEM, EDX, and XPS). Further, hydrazine (HZ) sensor was developed by modifying the bare active surface of glassy carbon electrode (GCE) using drop-casting approach. To detect the HZ, linear-sweep voltammetric (LSV) technique was utilized which showed good repeatability, stability, and selectivity. The modified GCE ( NiO/GCE ) acted as HZ sensor and demonstrated excellent detection limit (LOD) of 0.82 μM and sensitivity of 3.47 μA/μMcm 2 . In further investigations, real sample study indicated the potential role of NiO/GCE for practical applications. • Nanostructured NiO was synthesized using hydrothermal method. • Glassy carbon electrode modified with NiO has been used as working electrode. • Fabricated NiO/GCE was used as hydrazine sensor. • Electrochemical investigations showed good repeatability, stability and detection limit.