A Novel Electrochemical Nitrobenzene Sensor Based On Nicu Alloy Electrode

An electrochemical sensor of NiCu alloy was investigated for nitrobenzene detection based on nitrobenzene electroreduction. The bimetallic NiCu sensors were characterized by scanning electron microscope and X-ray diffraction, and their electrochemical behaviors for nitrobenzene reduction were investigated by polarization and current-time curves. The result showed that NiCu0.04 electrode exhibited a more sensitive response to nitrobenzene electroreduction possibly due to its higher Cu content and larger surface area. The detection limit of the NiCu0.04 sensor for nitrobenzene detection was 4 x 10(-5) M (S/N= 3) with a correlation coefficient of 0.995. This opens a new way to develop a simple and novel sensor for fast detection of nitroaromatic compounds in the environment.