摘要
为实现对环境和人体具有严重危害的Hg(Ⅱ)的高效检测,以稳定性优异的金属有机骨架(MOFs)材料UiO-66为基底,采用简便的后修饰策略,引入L-半胱氨酸(L-cys)对其进行改性处理,构建了高灵敏度的电化学传感器平台。鉴于L-cys中独特的官能团特性,该电化学传感平台对水体中的Hg(Ⅱ)展现出良好的选择性与高灵敏度。采用方波阳极溶出伏安法对水体中的Hg(Ⅱ)进行检测,并系统考察了溶液pH值、沉积电位、沉积时间以及搅拌速率等因素对传感器性能的影响。实验结果表明,UiO-66-L-cys电化学传感平台具备较低的检出限和较宽的线性检测范围,在水体环境中Hg(Ⅱ)的检测领域具有显著的潜在应用价值。
In order to effectively detect Hg(Ⅱ),which poses a serious threat to the environment and human health,this study focuses on the highly stable metal-organic framework(MOF)material UiO-66,which is modified with L-cysteine through a simple post-synthetic method to construct an electrochemical sensor.Due to the unique functional groups in L-cysteine,this sensing platform demonstrates good selectivity and high sensitivity towards Hg(Ⅱ)in water.The detection of Hg(Ⅱ)in water is performed using square wave anodic stripping voltammetry,investigating the effects of pH,deposition potential,deposition time,and stirring rate on sensor performance.Experimental results indicate that this sensing platform exhibits a low detection limit and a wide linear range,suggesting its potential application value for detecting Hg(Ⅱ)in aquatic environments.
作者
曹宇
戴泽铭
杨文澜
侯建华
杨正娇
王小治
CAO Yu;DAI Zeming;YANG Wenlan;HOU Jianhua;YANG Zhengjiao;WANG Xiaozhi(School of Environmental Science and Engineering,Yangzhou University,Yangzhou 225000,Jiangsu,China;Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing 210095,China;Kunshan Water Supply and Drainage Administrative Office,Kunshan 215300,Jiangsu,China)
出处
《实验室研究与探索》
北大核心
2025年第8期59-66,83,共9页
Research and Exploration In Laboratory
关键词
电化学
传感平台
汞
金属有机骨架材料
electrochemistry
sensing platform
Hg
metal-organic framework material
