![]() ![]() Sulphite (SO 3 2−) is used as a food additive and also as an inhibitor to prevent the microbial reactions 1. Similar content being viewed by othersĮlectrochemical sensor research is one of the important areas because of its application in numerous fields including drug, industrial, food, environmental and so on. Finally, practical utility of CuO modified electrode was demonstrated for the estimation of sulphite in commercial wine samples. The sensitivity and detection limit were in the order of 48.5 ♚ cm −2 mM −1 and 1.8 µM, respectively. A linear variation in peak current was obtained for SO 3 2− oxidation from 0.2 to 15 mM under the optimum experimental condition. Among the three different crystal structures, CuO shows promising electrocatalytic activity towards oxidation of sulphite. Electrochemical sensing of sulphite (SO 3 2−) on these three copper-based oxide modified electrodes was investigated. It shows attractive morphologies of different orientation such as rod like structure, nanobeads and well-aligned uniform nanorod for Cu 2O, CuO and CuNa 2(OH) 4, respectively. The microstructural information of nanoparticles was investigated by transmission electron microscopy. X-ray diffraction studies revealed that these copper-based oxide nanoparticles display different crystal structures such as cubic (Cu 2O), monoclinic (CuO) and orthorhombic. A facile one-step chemical method is introduced for the successful synthesis of Cu 2O, CuO and CuNa 2(OH) 4 crystal structures and their electrochemical properties were also investigated. ![]()
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