基于纳米金增敏的双酚A二氧化钛凝胶分子印迹电化学传感器的制备及应用

Lingling LI,Shaoming YANG,Shaoqing DING,Peiling SHANG,Jie YANG,Qiang CAO,Wenling ZHA

Chinese Journal of Applied Chemistry（2018）

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Abstract

以纳米金(AuNPs)为增敏材料,双酚A(BPA)为模板分子,结合表面溶胶凝胶法和自组装法,制备了BPA纳米金-TiO2凝胶分子印迹电化学传感器.利用扫描电子显微镜和能谱对AuNPs进行了表征,利用红外光谱仪对TiO2凝胶、BPA以及BPA印迹TiO2凝胶进行表征.在最优条件下,该传感器对BPA在1.0×10 -8~1.0×10 -5mol/L浓度范围内具有良好的线性关系,线性相关系数为0.995,检测限为0.6×10 -8mol/L,并将该分子印迹传感器应用于实际样品中BPA的分析检测,其回收率为97.4%~103%.

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Key words

gold nanoparticles,bisphenol A,TiO2,sol-gel method,self-assembly method,molecularly imprinted sensor

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