▎ 摘　　要

The health hazards caused by phenolic pollution are very serious and it's urgent to explore sensitive detection methods of phenols. Here, the partially-reduced-GO-sheet-covered polyaniline nanotubes (PANI-GO) was prepared by in-situ redox interaction between GO and PANI. The redox process was confirmed by Fourier transform infrared spectrometer and X-ray photoelectron spectroscopy. This nanocomposite sheet was evenly distributed on a glassy carbon electrode (PANI-GO/GCE). Cyclic voltammetry and electrochemical impedance spectroscopy characterization indicated that this PANI-GO facilitated the charge transfer with enhanced current response by using Fe(CN) 6(3-/4-) as a probe. The PANI-GO/GCE was applied successfully for the simultaneous determination of bisphenol A (BPA) and phenol with a wider peak-to-peak separation (140 mV) than that (97 mV) on bare GCE. Under optimal conditions, the PANI-GO/GCE exhibited a highly sensitive response to BPA and phenol oxidation in wide linear ranges of 2.0 x 10(-9) similar to 3.0 x 10(-6) mol L-1 and 1.0 x 10(-8) similar to 1.0 x 10(-5) mol L-1, respectively. The limits of detection of BPA and phenol were 5.0 x 10(-10) mol L-1 and 4.5x10(-9) mol L-1 (S/N>3), respectively. The determination results of trace amount of BPA in the water sample from plastic products by the PANI-GO/GCE are in good agreement with the ones from Ultra Performance Liquid ChromatographMass Spectroscopy. (c) 2019 The Electrochemical Society.