A novel nonenzymatic fructose sensor based on electrospun LaMnO3 fibers

We have developed a nonenzymatic electrochemical sensor based on a carbon paste electrode modified with electrospun LaMnO 3 fibers for fructose determination. LaMnO 3 fibers, a kind of perovskite-type oxide, were prepared by electrospinning and subsequent calcination process. The morphology and structure of LaMnO 3 fibers were characterized by scanning electron microscope, X-ray diffraction and Fourier Transform Infrared spectrum. The electrochemical response of the proposed sensor was evaluated by cyclic voltammetry and amperometry. Under optimal conditions, the linear response for fructose determination was obtained in the range of 0.4–100   μM, with a low detection limit of 63   nM ( S / N   =   3).