The first voltammetric investigation for astilbin based on β-cyclodextrin functionalized graphene modified electrode

Abstract

In this study, the electrochemical properties of astilbin were investigated for the first time and an electroanalytical method was established synchronously, which was based on a β-cyclodextrin–graphene nanocomposite modified electrode (β-CD–GNs/GCE). The electrode process of astilbin was investigated in detail, and some dynamic parameters were calculated. The detecting sensitivity of astilbin was greatly enhanced at this voltammetric sensor. Under optimum conditions, a lower detection limit (1 × 10⁻⁸ mol L⁻¹) and wider linear range (3.0 × 10⁻⁸ mol L⁻¹ to 2.0 × 10⁻⁶ mol L⁻¹) were achieved by the proposed sensor. Finally, the proposed method was applied to the analysis of a real sample, and the results showed that the method was applicable and reliable.