Institute for Energy Research, School of Chemistry and Chemical Engineering, Key Laboratory of Zhenjiang, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China.
Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, 1 Kerui Road, Suzhou 215009, PR China.
J Hazard Mater. 2020 Dec 5;400:123162. doi: 10.1016/j.jhazmat.2020.123162. Epub 2020 Jun 11.
Bisphenol A (BPA) has been penetrating every corner of our daily life via the entities of children's toys, food containers and electronic equipment. The ubiquitous exposure of BPA urges the implementation of supervising its emission in environment. This work designs a method of photoelectrochemical (PEC) aptasensing for the determination of BPA based on the Cu(I) modified carbon nitride (Cu/g-CN). The Cu/g-CN was prepared by solvothermal reaction with the ionic liquid bis(1-hexadecyl-3-methylimidazolium) tetrachlorocuprate (II) as Cu source. Cu/g-CN displays excellent PEC performances due to the introduction of Cu(I). The visible light absorption capacity and conductivity of g-CN can be enhanced by introducing Cu(I). With the help of BPA-binding aptamer immobilized on the surface of Cu/g-CN, the Cu/g-CN PEC aptasensor has adopted for the determination of BPA. The PEC aptasensor exhibits a well-fitted linear correlation between the response photocurrent signal and the logarithm of the concentration of BPA. The PEC aptasensor shows a distinguished capability of BPA detection with a wide detection range of 5.00 × 10 to 5.00 × 10 g L and low detection limit of 1.60 × 10 g L (at S/N = 3). This work provides a profound insight for detecting BPA in environmental water.
双酚 A（BPA）通过儿童玩具、食品容器和电子设备等实体渗透到我们日常生活的各个角落。BPA 的普遍暴露促使我们实施对其在环境中排放的监管。本工作设计了一种基于铜（I）修饰的氮化碳（Cu/g-CN）的光电化学（PEC）适体传感方法，用于测定 BPA。Cu/g-CN 通过离子液体双（1-十六烷基-3-甲基咪唑）四氯铜（II）作为 Cu 源的溶剂热反应制备。由于引入了 Cu（I），Cu/g-CN 表现出优异的 PEC 性能。通过引入 Cu（I），可以增强 g-CN 的可见光吸收能力和导电性。在固定在 Cu/g-CN 表面的 BPA 结合适体的帮助下，Cu/g-CN PEC 适体传感器用于测定 BPA。PEC 适体传感器的响应光电流信号与 BPA 浓度的对数之间呈现出良好的线性相关。PEC 适体传感器具有出色的 BPA 检测能力，检测范围为 5.00×10 至 5.00×10 g L，检测限低至 1.60×10 g L（S/N=3）。这项工作为环境水样中 BPA 的检测提供了深入的见解。
