Pyrolysis-derived materials of Mn-doped ZIF-67 for the electrochemical detection of o-nitrophenol

The zeolitic imidazolate framework ZIF-67 can be used as a favorable catalyst carrier owing to its unique structure. Although the catalytic activity of ZIF-67 can be considerably improved by doping with transition metals such as manganese, manganese-doped ZIF-67 has rarely been applied in electrocatalysis. In this study, manganese-doped ZIF-67 was carbonized to form [email protected] and to prepare an electrochemical sensor for detecting o-nitrophenol (o-NP). The results showed that [email protected] exhibits a good electrocatalytic performance. The constructed sensor possessed a linear range of 0.5–100 μM for the detection of o-NP, with a detection limit of 0.16 μM. In addition, it was found to accurately detect o-NP in real lake and tap water samples. [email protected] is therefore expected to be an efficient electrocatalyst for detecting o-NP as an industrial pollutant.