Synthesis and NH_(3)/TMA sensing properties of CuFe_(2)O_(4) hollow microspheres at low working temperature

作     者：Kai-Di Wu Jin-Yong Xu Marc Debliquy Chao Zhang Kai-Di Wu;Jin-Yong Xu;Marc Debliquy;Chao Zhang

作者机构：College of Mechanical EngineeringYangzhou UniversityYangzhou 225127China Materials Science DepartmentUniversity of MonsMons 7000Belgium 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第7期

页      面：1768-1777页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 08[工学] 080202[工学-机械电子工程] 0806[工学-冶金工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 083204[工学-水产品加工及贮藏工程] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(No.51872254) the National Key Research and Development Program of China(No.2017YFE0115900) Yangzhou City-Yangzhou University Cooperation Foundation(No.YZU201801)。 

主　　题：Copper ferrite Hollow microspheres Gas sensor Ammonia Trimethylamine 

摘      要：In this work,CuFe_(2)O_(4) hollow microspheres assembled with nanosheets(CuFe_(2)O_(4) HMANs)were synthesized using a solvothermal method followed by an annealing treatment.The effects of annealing temperature on microstructure,chemical composition and gas sensing characteristics of as-prepared samples were investigated.The results showed that annealing treatment played a crucial role in the final products.All samples demonstrated hollow spherical morphology assembled with nanosheets or nanoparticles.The CuFe_(2)O_(4) HMANs annealed at400℃exhibited the best n-type conductometric sensing properties toward low-concentration NH3 at 100℃and49%RH.The sensor response to 10×10^(-6)NH_(3) was 4.0 with a rapid response time of 32 s,and it even showed a response of 1.2 toward 1×10^(-6)NH3 at the same condition,while a response of 3.95 to trimethylamine(TMA).The CuFe_(2)O_(4) HMANs-based NH_(3) sensor also exhibited good selectivity and excellent reproducibility.Therefore,this work provided a novel promised sensing material of low-concentration NH_(3) and TMA for real-time monitoring.