▎ 摘　　要

In this paper, a p-methoxy zinc porphyrin-fullerene derivative (ZnPp-C-60) noncovalently functionalized electrochemically reduced graphene oxide (ERGO) hybrid (ERGO@ZnPp-C-60) was facilely obtained by pi-pi stacking interaction between zinc porphyrin ring and ERGO. The hybrid was characterized by scanning electron microscope (SEM), electrochemistry, UV-vis spectra, and density functional theory (DFT), which demonstrated that the presence of ERGO caused more redox reversibility and higher electrocatalytic activity of ZnPp-C-60. By using their synergistic effects of the remarkable mechanical, electrical, catalytic, and structural properties, ERGO@ZnPp-C-60 incorporated in tetraoctylammonium bromide (TOAB) film was modified on the glassy carbon electrode (GCE) to construct a novel non-enzymatic electrochemical sensor. The sensor exhibited enhancing response sensitivity for the electrocatalyic reduction of hydrogen peroxide with a high sensitivity of 451.3 mu A mM(-1) and a limit of detection (LOD) as low as 0.27 mu M. The sensitivity is 2-fold larger than that of TOAB/ZnPp-C-60/GCE in the absence of ERGO. Although a high detecting sensitivity of 162.5 mu A mM(-1) for electrocatalytic oxidation of nitrite could be also obtained on the presented sensor, the sensitivity is lower than that of TOAB/ZnPp-C-60/GCE (233.9 mu A mM(-1)) due to the change in the structure of ZnPp-C60 and the electronic interactions between GO and ZnPp-C-60. Even though, the smart hybrid (ERGO@ZnPp-C-60) possesses obvious advantage for the fabrication of non-enzymatic electrochemical sensor and paves a new avenue for constructing C-60 derivative and graphene based materials. (C) 2016 Elsevier B.V. All rights reserved.