Abstract
The Ag/boehmite nanotubes/reduced graphene oxide nanocomposites (Ag/boehmite nanotubes/rGO) have been synthesized for enhanced electrochemical sensing of hydrogen peroxide (H2O2). Field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and X-ray diffraction spectroscopy (XRD) were applied to characterize the composition and morphology of the nanocomposites. TEM and FESEM images revealed that a great deal of Ag nanoparticles with spherical morphologies were fixed on the surface of boehmite nanotubes/rGO. The sensor based on Ag/boehmite nanotubes/rGO nanocomposites possessed remarkable performance for the electrical reduction of H2O2. and showed a linear response for the detection of H2O2 in the range of 0.5μM–10.0mM with a low detection limit of 0.17μM (S/N=3) and a sensitivity of 80.1μAmM−1cm−2. Besides, the as-prepared sensor exhibited outstanding anti-interference capability. Therefore, the excellent experimental results indicated that Ag/boehmite nanotubes/rGO nanocomposites is a promising type of support material for electrochemical detection of H2O2.
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