Highly sensitive hydrothermally prepared nickel phosphate electrocatalyst as non-enzymatic glucose sensing electrode

Present investigation describes a successful preparation of nickel phosphate (Ni 3 (PO 4 ) 2 .8H 2 O) thin film electrodes by facile one pot hydrothermal method. As developed Ni 3 (PO 4 ) 2 .8H 2 O thin film electrodes with the variation of thickness are examined for morphological change and glucose sensing. The Ni 3 (PO 4 ) 2 .8H 2 O thin film electrodes exhibit linear response with respect to the variation in glucose concentration from 2.5 to 30 mM and acquire the sensitivity of 8312 μA mM −1 cm −2 with 437 μM LOD. Selectivity performance of Ni 3 (PO 4 ) 2 .8H 2 O thin film electrode towards glucose in presence of dopamine, fructose and lactose is studied. The results suggest that Ni 3 (PO 4 ) 2 .8H 2 O thin film electrode is beneficial for glucose sensing application due to enormous active sites with the high specific surface area of the active material.