摘要
以羟基氧化铟(InOOH)为前驱体,采用溶剂热结合离子交换法成功制备出系列InOOH/ZIF-8(IOH/ZIF-8)纳米复合材料,并对其进行气敏测试。结果表明,InOOH_(100)/ZIF-8在对浓度为410 mg/m^(3)的乙醇蒸气进行检测时响应度最高(56),且有着检出限低(7.59 mg/m^(3))、响应/恢复时间快(34/24 s)、稳定性高等优点。InOOH/ZIF-8优异的传感性能源于其独特的多孔结构、较大的比表面积,为其提供了较多的活性位点,有利于气体的解/吸附和主客体交互作用,且有效避免InOOH加热易氧化、团聚和ZIF-8导电性差的缺点,为研究构建和优化气敏传感材料检测挥发性有机化合物奠定了基础。
A series of InOOH/ZIF-8(IOH/ZIF-8)nanocomposites are successfully prepared via solvothermal method using indium hydroxyl oxide(InOOH)as the precursor.The sensing properties of the prepared materials are evaluated through gas sensitivity test.Taking ethanol as the target gas,it is found that InOOH_(100)/ZIF-8 gas sensor has the highest response value(56),low detection limit(7.59 mg/m^(3)),good selectivity and short response/recovery time(34/27s),and has excellent performance in stability(high tempera-ture,high humidity and long-term cycle stability).The improved gas-sensitive performance is attributed to the unique porous structure formed by ZIF-8 and InOOH,which has a large specific surface area,provides more active sites,facilitates gas desorption、adsorption and host-vip interaction,and effectively avoids the disadvantages of easy oxidation,agglomeration and poor conductivity of ZIF-8 when heated by InOOH.In summary,InOOH_(100)/ZIF-8 nanocomposite is one of the potential ethanol gas-sensitive sensing materials,with ad-vantages of simple production process and low cost.Through continuous improvement and optimization of InOOH_(100)/ZIF-8 nanocompos-ites,it is of great practical significance to expand its application.
作者
李征峰
廖港丽
张昱梅
宋云奇
姚垚
LI Zhengfeng;LIAO Gangli;ZHANG Yumei;SONG Yunqi;YAO Yao(Ningxia Normal University,Ningxia Key Laboratory of Green Catalytic Materials and Technology,College of Chemistry and Chemical Engineering,Guyuan Ningxia 756000,China)
出处
《传感技术学报》
北大核心
2025年第3期426-434,共9页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(22265025/12164037)
宁夏自然科学基金项目(2021AAC05013/2022AAC03336)
六盘山资源工程技术研究中心项目(HGZD22-14)
宁夏师范学院2023年度大学生科技创新基金项目(Z202309)
宁夏师范学院2023年度校级大学生创新创业训练计划项目(X202310753165)
无机化学重点学科资助项目。
