A sensitive electrochemical sensor for Pb2+ ions based on ZnO nanofibers functionalized by L-cysteine

Environmental pollution caused by heavy metals is a world concern, mainly because it can be accumulated in the human body, causing serious health problems. Thus, an accurate method to determine the concentration of heavy metals, lead (II) ions for instance, for water quality control is of great significance to the protection of the environment and human health. Herein, we reported the synthesis of a zinc oxide nanofibers/L-cysteine (ZnO_L-cys)...