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通过循环伏安法在玻碳电极(GCE)表面制备得到了掺杂十二烷基苯磺酸钠(SDBS)的聚吡咯(PPy)薄膜,并在0.1 mol/L Na OH溶液中进行过氧化处理,得到SDBS-OPPy/GCE。采用电解法制备得到碳量子点(CQDs),并将其修饰于SDBS-OPPy/GCE电极表面,成功构建了CQDs/SDBS-OPPy/GCE电化学传感器,对罗丹明B进行定量检测。在最佳条件下,该传感器展示了一个较宽的线性范围为:(0.05~10.0)μmol/L,较低的检测限:0.013μmol/L。同时,该传感器具有较好的重现性和稳定性。
A polypyrrole (PPy) film doped with sodium dodecylbenzenesulfonate (SDBS) was prepared on the surface of glassy carbon electrode (GCE) by cyclic voltammetry and was oxidized in 0.1 mol / L NaOH solution Processing, get SDBS-OPPy / GCE. The carbon quantum dots (CQDs) were prepared by electrolysis method and modified on the surface of SDBS-OPPy / GCE electrode. CQDs / SDBS-OPPy / GCE electrochemical sensors were successfully constructed to detect rhodamine B quantitatively. Under the optimal conditions, the sensor showed a wide linear range of (0.05-10.0) μmol / L and a lower limit of detection of 0.013 μmol / L. At the same time, the sensor has better reproducibility and stability.