碳材料在色素电化学传感中的研究进展

Research Progress of Electrochemical Sensors Based on Carbon Nanomaterials in the Detection of Azo Dyes

偶氮类色素因其着色力强、价格低廉等优点而作为食品添加剂并被广泛应用于食品行业之中。《中华人民共和国食品添加剂卫生使用标准(GB 2760)》明确指出各类食品中的色素严禁超范围和超剂量使用。电化学检测方法具有灵敏度高、检测速度快、操作简便的优点,因此构建性能优异的电化学传感器在偶氮类色素快速检测应用中具有重要意义。其中,基于碳纳米材料修饰的电化学传感器在色素检测中具有重要影响。本文从功能化石墨烯、金属有机框架、多孔碳等碳基纳米材料出发,总结了近年来碳基修饰的电化学传感器在偶氮类色素检测中应用的研究进展,分析对比了各种碳材料的结构性能、制备方法及应用,并对功能碳纳米材料及电化学传感器的发展进行了展望,为高灵敏的新型偶氮类色素电化学传感器的开发提供研究基础。

Azo dyes are used as food additives and are widely used in the food industry due to their strong coloring power and low price. The People’s Republic of China Food Additives Hygienic Use Standard(GB 2760) clearly points out the pigments in various foods. The use of overrange and over-dose is strictly prohibited. The electrochemical detection method has the advantages of high sensitivity, fast detection speed, and easy operation. Therefore, the construction of an electrochemical sensor with excellent performance is of great significance in the rapid detection of azo pigments. Among them, based on carbon electrochemical sensors modified by nanomaterials have an important influence in the detection of pigments. Based on functionalized graphene, metal-organic frameworks, porous carbon and other carbon-based nanomaterials, this article summarizes the recent progress of carbon-based electrochemical sensors applied in azo detection, analysis and comparison of the structural properties,preparation methods and applications of various carbon materials, and prospects for the development of functional carbon nanomaterials and electrochemical sensors, provides a research basis for the development of chemical sensors, which are highly sensitive new azo pigments.