【摘要】 以水热合成法制备了中空微球Fe₃O₄纳米粒子,运用透射电镜（TEM）和扫描电镜（SEM）对其进行表征。将该纳米材料修饰到玻碳电极表面,修饰电极对汞离子表现出良好的电化学响应,成功制备了用于检测Hg²⁺的电化学传感器。通过优化实验条件,汞离子的氧化峰电流与其浓度呈现良好的线性关系,其线性范围为1.0×10^-78.8×10^-5mol/L,相关系数为0.994,检出限为3.0×10^-5mol/L。实验表明,制备的传感器用于对Hg²⁺检测的结果令人满意,而且其稳定性和重现性好,有望实现对污水中低浓度Hg²⁺的检测。更多还原

【Abstract】 In this paper,the hollow microspheres Fe₃O₄ nanoparticles were prepared by a hydrothermal synthesis.And using transmission electron microscopy（TEM）and scanning electron microscopy（SEM）for characterization. An electrochemical sensor for Hg（II）fabricated based on the glass carbon electrode modified with the hollowmicrospheres Fe₃O₄ nanoparticles. In the optimization of experimental conditions,the linear range is found to be 1.0×10^-7 to 8.8×10^-5 mol/L（R2=0.994）,and the detection limit of 3.0×10^-8mol/L. The sensor exhibited high stability and reproducibility. There is hope for the wastewater of lowconcentration Hg²⁺detection.更多还原