Electrochemical behavior of Azure A/gold nanoclusters modified electrode and its application as non-enzymatic hydrogen peroxide sensor

► AzA/gold nanoclusters was prepared and characterized by Absorption spectroscopy, FESEM and confocal Raman microscopy. ► AzA/gold nanoclusters modified electrode was fabricated and characterized by cyclic voltammetry and was applied for the determination of H2O2 under static and dynamic condition. ► A linear range of 3.26 × 10−6 M to 3.2 × 10−3 M with the detection limit of 1.08 × 10−6 M (S/N = 3) was obtained for the determination of H2O2. ► The sensor was applied for the determination of H2O2 in commercial milk samples.