Fabrication of amorphous mixed-valent molybdenum oxide film electrodeposited on a glassy carbon electrode and its application as a electrochemistry sensor of iodate

A novel amorphous mixed-valent molybdenum oxide film was grown on a glassy carbon by the electrodepositing method. Its electrochemical behaviors were studied by cyclic voltammetry and amperometry. It exhibited a high stability and electrocatalytic activity for the reduction of iodate. Amperometry revealed a good linear relationship between peak current with the concentration of iodate in the range of 1 × 10−6 and 2 × 10−4 mol L−1 with a correlation coefficient of 0.9997 and the detection limit of 5 × 10−7 mol L−1 (signal:noise = 3:1).