碳基全固态离子选择性电极材料研究进展

Studies on all solid-state ion-selective electrodes based on carbon derived materials

离子选择性电极作为一种常见的电位型化学传感器,具有结构简单、制作成本低、易微型化、可穿戴化等特点,被广泛应用到工业分析、环境监测、生物医疗等领域。固态转导层作为全固态离子选择性电极的组成部件之一,对电极的性能起着至关重要影响。碳基材料具有良好的离子-电子信号转换效率和化学稳定性,被认为是理想的固态转导层材料。本文阐述了碳基材料在全固态离子选择性电极中的响应机理,综述了石墨烯、碳纳米管、多孔碳材料及其他碳基材料作为固态转导层材料的研究进展,分析对比了上述材料的导电性、电容性、比表面积、疏水性等性能,并展望了其未来的发展趋势。

As a common potentiometric sensor, solid-state ion-selective electrodes(SS-ISEs) have attracted much more attention due to simple structure, low cost, easy miniaturization and wearability,therefore have been widely used in industrial analysis, environmental monitoring, biomedical and related fields. As one of the components of an all-solid-state ion-selective electrode, the solid-state transduction layer plays a crucial role in the performance of the electrode. Carbon-based materials have good ion-electron signal conversion efficiency and chemical stability, are considered as an ideal materials for solid-state transduction layers. This article briefly describes the response mechanism of carbon-based materials in all-solid-state ion-selective electrodes, reviews the research progress of graphene, carbon nanotubes,porous carbon materials and other kinds of carbon-based nano materials as solid-state transconductance layer materials. Finally, we analyze and compare the properties of the above materials such as electrical conductivity, capacitance, specific surface area and hydrophobicity as well as their prospective and future development trends.