碳基材料构建电化学传感器实现苯二酚异构体的超敏精准检测:综述  

Electrochemical Sensor Construction of Carbon-based Materials for Ultrasensitive and Precise Determination of Dihydroxybenzene Isomers:a Review

作　　者：饶强海 胡光煊 张春媚 杨鸿斌 胡芳馨 郭春显 RAO Qianghai;HU Guangxuan;ZHANG Chunmei;YANG Hongbin;HU Fangxin;GUO Chunxian(School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China;Jiangsu Laboratory of Biological and Chemical Sensing and Biochip,Suzhou 215009,Jiangsu,China)

机构地区：[1]苏州科技大学材料科学与工程学院,江苏苏州215009 [2]江苏省生化传感与芯片技术工程实验室,江苏苏州215009

出　　处：《材料导报》2023年第5期38-54,共17页Materials Reports

基　　金：国家自然科学基金(21605110,21972102);江苏省研究生实践创新计划项目(SJCX20_1101);江苏省双创人才计划。

摘　　要：苯二酚是一种常见的有机污染物,它有对苯二酚、邻苯二酚和间苯二酚三种同分异构体,三者在结构和理化性质上十分相似且常在水中共存。苯二酚在工业生产中广泛用作化工原料或中间体,但是其有高毒性、致癌性和难降解性,所产生的含酚废水对环境的危害极大,同时对人体健康构成严重威胁。因此,实现苯二酚异构体的准确鉴别和测定尤为重要。电化学传感器具有灵敏度高、检测限低、线性范围宽和操作简便以及成本低等优点,已被广泛用于重金属和酚类等环境污染物的检测。碳基材料具有高导电性、巨大的比表面积和良好的化学稳定性,能有效促进异构体的传质、表面吸附和电子转移过程,为实现异构体的同时传感提供了良好的基础。此外,表面功能化、掺杂及复合其他纳米材料等手段可进一步调控碳基材料的组成及结构,并改善其对异构体的传感性能。本文首先简要介绍了苯二酚的环境污染和危害及检测方法,然后阐述了碳基材料构建的电化学传感器在同时测定苯二酚异构体方面的研究进展,其中涵盖了苯二酚传感器的电化学传感性能、性能增强机制以及碳基材料的构性关系,还讨论了三种异构体的电化学氧化路径和反应机理。最后,本文就电化学传感器实现异构体超灵敏精准检测所面临的问题提出了建议,以期进一步促进苯二酚电化学传感器的发展。Dihydroxybenzene isomers are common organic contaminants, including hydroquinone, catechol and resorcinol, which behave similar struc-tures and physicochemical properties and often coexist in water. The isomers are widely utilized in industry as raw materials or intermediates;however, they are highly toxic, carcinogenic and refractory. The resulting phenol-containing wastewater poses a major threat to environment and people health. Therefore, it is of critical significance to efficiently and accurately determine dihydroxybenzene isomers. Electrochemical sensors exhibit high sensitivity, ultralow limits of detection(LOD), wide linear range, ease of operation and low cost, and they have been widely utilized in the sensing of contaminants such as heavy metals ions and phenols. Due to high conductivity, large specific-surface area, and good chemical stability, carbon-based nanomaterials can effectively promote the adsorption, mass transfer and electron transfer process, providing a good basis to implement the simultaneous detection of isomers. Furthermore, surface functionalization, doping and compounding of other nanomaterials can regulate the composition and structure of carbon-based materials, which can further facilitate their sensing performance. This review briefly introduces the environmental hazards of dihydroxybenzene isomers and its corresponding detection methods. Then, we elaborate the research progress of simultaneous determination of dihydroxybenzene isomers by electrochemical sensors constructed of carbonbased materials, including electrochemical sensing performance, enhancement mechanism of performance, and the structure-activity relationship of electrochemical sensor constructed by carbon-based materials. And, the electrochemical oxidation pathways and reaction mechanisms of the three isomers are also discussed in detail. Finally, this review discusses the challenge of ultrasensitive and precise determination of isomers, for promoting the development of dihydroxybenzene sensors.

关 键 词：电化学传感器 苯二酚异构体 同时检测 碳基纳米材料 电氧化机制 

分 类 号：X502[环境科学与工程—环境工程]