| 基于还原氧化石墨烯-钯复合材料的双酚A分子印迹电化学传感器的研究 |
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| 基金项目:广东省教育厅项目（2014KZDXM074） |
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| 中文摘要:采用分子印迹技术，以还原氧化石墨烯-钯复合材料（rGO@Pd）修饰电极为工作电极，双酚A为模板分子，吡咯为聚合单体，成功制备出双酚A分子印迹电化学传感器。采用循环伏安法（CV）、差分脉冲伏安法（DPV）和电化学交流阻抗法（EIS）等，考察了该传感器的电化学性能。利用扫描电子显微镜（SEM）、傅立叶红外光谱（FT-IR）等技术对传感器表面进行结构分析。在最佳实验条件下，该电极的峰电流与双酚A在10~100 nmol/L浓度范围内呈良好线性关系，相关系数（r）为0997 7，检出限（S/N=3）为01 nmol/L。该电极表现出良好的灵敏度、选择性、重现性和稳定性，已成功应用于自来水中双酚A含量的测定，加标回收率为 921%~1080%。 |
| 中文关键词:双酚A 还原氧化石墨烯-钯复合材料 分子印迹技术 电化学传感器 |
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| A Molecularly Imprinted Electrochemical Sensor for Determination of Bisphenol A Based on rGO@Pd Composite |
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| Abstract:A novel molecularly imprinted electrochemical sensor（MIP/rGO@Pd/GCE） for the determination of bisphenol A（BPA） was prepared by molecular imprinting technique based on reduced graphene oxide（rGO） and Pd composite（rGO@Pd） modified glassy carbon electrode（GCE）.BPA and pyrrole were used as template and monomer,respectively.The electrochemical properties of the molecularly imprinted electrochemical sensor were evaluated by cyclic voltammetry（CV）,differential pulse voltammetry（DPV） and electrochemical impedance spectroscopy（EIS）.The morphologies of the sensor were characterized by scanning electron microscopy（SEM） and Fourier transform infrared spectroscopy（FT-IR）.Under the optimum experimental conditions,the peak current intensity at the modified electrode was linear with BPA in the concentration range of 10-100 nmol/L.The limit of detection（LOD） for the sensor was 01 nmol/L and the correlation coefficient（r） was 0997 7.With high sensitivity,excellent selectivity,long term stability and remarkable reproducibility,this novel molecularly imprinted electrochemical sensor was successfully applied in the determination of BPA in water samples with spiked recoveries of 921%-1080%． |
| Key Words:bisphenol A reduced graphene oxide and Pd composite molecular imprinting technique electrochemical sensor |
| 引用本文：朱培杰，刘艳清，姚夙，马国坚，汪洪武.基于还原氧化石墨烯-钯复合材料的双酚A分子印迹电化学传感器的研究[J].分析测试学报,2018,37(7):804-809. |
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