高等学校化学学报2024，Vol.45Issue(6)：30-38,9.DOI:10.7503/cjcu20240031
功能化MIL-101(Cr)修饰QCM气相传感器的组装与甲酸识别
Assembly of Functionalized MIL-101(Cr)-loaded Quartz Crystal Microbalance Gas Sensors for Formic Acid Detection
摘要
Abstract
Volatile organic compounds(VOCs)are considered as one of the major components in atmospheric pollutants,and pose serious hazards to both human health and the environment.It is urgent to develop new high-efficient detection techniques for VOCs.In this work,ethylenediamine(ED)and ethanolamine(EA)were grafted into MIL-101(Cr)to obtain ED-and EA-derived MIL-101(Cr)materials[labeled as MIL-101(Cr)-ED and MIL-101(Cr)-EA],respectively.Then,these three MIL-101(Cr)materials were loaded on the surface of quartz crystal through dip coating to assemble three kinds of MIL-101(Cr)-modified quartz crystal microbalance(QCM)gas sensors,respectively.Moreover,the sensing and recognition performance of these QCM sensors toward methanol,ethanol,2-propanol,acetone,cyclohexane,diethylamine,formic acid,formaldehyde,ammonia,and acetic acid were studied in detail.As indicated,MIL-101(Cr)-ED-and MIL-101(Cr)-EA-loaded QCM sensors showed better sensing performance for formic acid in comparison with the original MIL-101(Cr)-based sensor,and the oscillation frequency of these two sensors decreased by-375.6 and-232.1 Hz when the concentration of formic acid was 350 mg/L,respectively.Δf value was linearly related to the concentration of formic acid in the range of 5-350 mg/L.In addition,the sensitivity of MIL-101(Cr)-ED-loaded QCM gas sensor was estimated to be 0.95 Hz·L·mg-1 and the limit of detection was 0.95 mg/L.As a result,this MIL-101(Cr)-modified QCM gas sensor demonstrated high sensitivity,low detection limit,and good repeatability.In brief,this research would provide some useful information for developing new QCM gas sensors in real-time VOCs detection.关键词
石英晶体微天平(QCM)/MIL-101(Cr)/功能化/气相传感器/甲酸识别Key words
Quartz crystal microbalance(QCM)/MIL-101(Cr)/Functionalization/Gas sensor/Formic acid detection分类
化学化工引用本文复制引用
陈雅婷,范军,章伟光,王鹏,郭宝盈,付思芸,刘琬宁,陈舒仪,施羽,蔡松亮,郑盛润..功能化MIL-101(Cr)修饰QCM气相传感器的组装与甲酸识别[J].高等学校化学学报,2024,45(6):30-38,9.基金项目
国家自然科学基金(批准号:92356303,22073032)、广东省自然科学基金(批准号:2021A1515010211)、广东省科技创新战略专项资金(批准号:pdjh2022a0127)和清远市科技计划项目(批准号:2023KJJ013)资助. Supported by the National Natural Science Foundation of China(Nos.92356303,22073032),the Natural Science Foundation of Guangdong Province,China(No.2021A1515010211),the Science and Technology Innovation Strategy Project of Guangdong Province,China(No.pdjh2022a0127)and the Science and Technology Project of Qingyuan,China(No.2023KJJ013). （批准号:92356303,22073032）
