基于层状磷酸锰-金纳米颗粒复合物的电化学传感器研究

Electrochemical Sensor Based on Layered Manganese(Ⅱ) Phosphate-Au Nanoparticles Composites

利用化学沉淀方法室温下水相合成层状磷酸锰纳米材料.然后利用磷酸锰-金纳米颗粒修饰玻碳电极,构建电化学传感器并用于多巴胺的灵敏检测.通过循环伏安法和微分脉冲伏安法对所构建传感器的电化学行为进行考察.结果表明,该传感器对多巴胺的线性检测范围为0.5～120μmol/L,检出限为0.05μmol/L.同时,该方法具有灵敏度高、抗干扰能力强、稳定性好等优点.

Layered manganese（Ⅱ）phosphate（Mn3（PO4）2 was synthesized by chemical precipitation in aqueous solution at room temperature.An electrochemical sensor was developed for dopamine determination based on manganese phosphate-Au nanoparticles composites modified glassy carbon electrode（GCE）.The electrochemical behaviors of the sensor were investigated by cyclic voltammetry（CV）and differential pulse voltammetry（DPV）.The results indicated that the sensor possessed a linear range of 0.5～120μmol/L with a detection limit of 0.05μmol/L.In addition,the fabricated electrode exhibited high sensitivity,good anti-interference ability and stability.