基于X射线吸收谱的重金属电化学催化检测机制研究  

Study on electrochemical catalytic detection mechanism of heavy metal ions based on X-ray absorption spectroscopy

作　　者：李培华 陈石华 杨猛 宋宗银 李丽娜[2] 黄行九 Pei-Hua Li;Shi-Hua Chen;Meng Yang;Zong-Yin Song;Li-Na Li;Xing-Jiu Huang(Institute of Solid State Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Shanghai Synchrotron Radiation Facility,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204,China)

机构地区：[1]中国科学院合肥物质科学研究院固体物理研究所,合肥230031 [2]中国科学院上海应用物理研究所,上海201204

出　　处：《中国科学：化学》2023年第11期2250-2269,共20页SCIENTIA SINICA Chimica

基　　金：国家重点基础研究发展规划(编号:2021YFB3201400);国家自然科学基金(编号:22206187,22204166);安徽省自然科学基金(编号:2208085QB57);上海市科技创新行动计划(编号:22JC1403800);中国博士后创新人才支持计划(编号:BX2021317);电分析化学国家重点实验室开放课题(编号:SKLEAC202312);中国科学院特别研究助理,中国科学院合肥物质科学研究院院长基金项目(编号:YZJJ202302-TS,YZJJ-GGZX-2022-01,YZJJ2022QN26,YZJJZX202019);中科院建制化平台项目“二氧化碳高效捕集”;高研院自主部署仪器研制项目“台式X射线谱仪多功能联用一体化原位装置研制”资助。

摘　　要：电化学方法现场检测重金属离子(HMI)独具优势,对于控制与消除重金属污染意义重大.相关研究大多依赖于经验测试或侧重于报道检测性能,对催化检测机制缺乏科学认识,导致功能敏感材料的设计缺乏指导性策略,严重影响检测的准确性和可靠性.本文综述了近几年来本课题组利用X射线吸收精细结构谱(XAFS)研究HMI催化检测机制的研究工作.主要介绍了六种不同的传感策略增强HMI检测的原理和特点,指出了各类敏感材料在电分析应用中所面临的机遇与挑战,提出了从催化的角度探究电化学检测机制的研究新思路.最后,展望了利用原位XAFS技术、数值模拟计算和机器学习等探究电化学反应动态过程的重要性和必要性.本文对开发功能型传感界面具有重要的指导意义.Electrochemical method has unique advantages in on-site detecting heavy metal ions(HMI),which is of great significance for the early control and elimination of heavy metal pollution.Most of relevant studies mainly rely on empirical testing or focus on reporting detection performance,which results in the lack of scientific understanding for catalytic detection mechanism and effective guidance strategies for the design of functionally sensitive materials,as well seriously affecting the accuracy and reliability of detection results.Herein,the recent work of our group to study the catalytic detection mechanism of HMI using X-ray absorption fine structure spectroscopy(XAFS)is reviewed.The principle and characteristics of six different sensing strategies to enhance HMI detection are introduced.Meanwhile,the opportunities and challenges faced by various sensitive nanomaterials in the application of electroanalysis are proposed.A new research idea to explore electrochemical detection mechanisms from the perspective of catalysis is put forward.Finally,the significance and necessity of combining in-situ XAFS technology,numerical simulation,and machine learning to explore the dynamic reaction processes of electrochemical detection are pointed out.This paper exhibits important guiding significance for developing functional sensing interfaces.

关 键 词：X射线吸收精细结构谱 电化学检测 催化检测机制 重金属污染物 环境电分析 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]