In this paper, employing a hydrothermal method, we synthesized Cu₂O nanoparticles and Cu₂O@C core–shell. The scanning electron microscope (SEM), X -Ray diffraction (XRD), dynamic light scattering (DLS) and zeta potential techniques were used for characterized of the Cu₂O nanoparticles and Cu₂O@C core–shell. The zeta potential values were obtained to be -11.16 mV and -0.88 mV for Cu₂O and Cu₂O@C, respectively. The average hydrodynamic size of diameter for Cu₂O and Cu₂O@C was obtained as 48-62 nm and 200-250 nm by DLS method. Polyalizarin yellowe R (PAYR) and Nafion (Nf) conductive polymers with Cu₂O@C core–shell immobilizing on glassy carbon electrode (PAYR/Cu2O@C /Nf/GCE), they were applyed for fabrication of an original electrochemical sensor to detect and determine bisphenol A. Cyclic voltammetry (CV) and impedimetric techniques were employed to confirm the proposed sensor construction. Furthermore, the electrocatalytic-based oxidation behavior which electrode showed was studyed by cyclic voltammetry and differential puls voltammetry (DPV) methods. The results showed that, PAYR/Cu₂O@C/Nf composite has a great electrocatalytic features for detecting and determining bisphenol A at 0.12V(OX1) and 0.63V(OX2). For OX1 peak, linear range (1 – 1400 µM), limit of detection (260 nM) and sensitivity (0.0009 µA/µM) were obtained. Moreover, considering the peak of OX2, linear range (1 – 1400 µM), limit of detection (240 nM) and sensitivity (0.0009 µA/µM) were calculated. PAYR/Cu₂O@C/Nf/GCE presented considerable advantages for instance high sensitivity, used for real samples, simple preparation, low detection of limit, and specially the oxidation of bisphenol A at two applied potentials that it reported for the first time.

在本文中，我们采用水热法合成了Cu ₂ O纳米粒子和Cu ₂ O @ C核壳。扫描电子显微镜（SEM），X射线衍射（XRD），动态光散射（DLS）和Zeta电位技术用于表征Cu ₂ O纳米颗粒和Cu ₂ O @ C核-壳。对于Cu ₂ O和Cu ₂ O @，其ζ电势值分别为-11.16 mV和-0.88 mV 。通过DLS法获得的Cu ₂ O和Cu ₂ O @ C的平均流体动力学直径为48-62 nm和200-250 nm。具有Cu _2的聚茜素黄变R（PAYR）和Nafion（Nf）导电聚合物O @ C核壳固定在玻碳电极上（PAYR / Cu2O @ C / Nf / GCE），它们被用于制造用于检测和测定双酚A的原始电化学传感器。采用了循环伏安法（CV）和阻抗法确认建议的传感器构造。此外，通过循环伏安法和微分脉冲伏安法（DPV）方法研究了电极显示的基于电催化的氧化行为。结果表明，PAYR / Cu ₂O @ C / Nf复合材料在0.12V（OX1）和0.63V（OX2）处具有检测和测定双酚A的强大电催化特性。对于OX1峰，可得到线性范围（1-1400 µM），检测限（260 nM）和灵敏度（0.0009 µA / µM）。此外，考虑到OX2的峰，线性范围（1 – 1400 µM），检测极限（240 nM）和灵敏度（0.0009 µA / µM）。PAYR / Cu ₂ O @ C / Nf / GCE具有相当大的优势，例如灵敏度高，用于实际样品，制备简单，限度检测低以及特别是双酚A在首次报告的两个施加电势下被氧化。