Hierarchical flower-like NiFe2O4 with core-shell structure for excellent toluene detection

作     者：Yan-Lin Zhang Chao-Wei Jia Ruo-Nan Tian Hong-Tao Guan Gang Chen Cheng-Jun Dong Yan-Lin Zhang;Chao-Wei Jia;Ruo-Nan Tian;Hong-Tao Guan;Gang Chen;Cheng-Jun Dong

作者机构：School of Materials and EnergyYunnan UniversityKunming 650091China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第6期

页      面：1578-1587页

核心收录：

学科分类：07[理学] 0806[工学-冶金工程] 070205[理学-凝聚态物理] 08[工学] 070602[理学-大气物理学与大气环境] 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）] 0706[理学-大气科学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (No.11564042) the Precious Metal Materials Genetic Engineering Major Project of Yunnan Province (No.2019ZE001) the Project of the Department of Science and Technology of Yunnan Province (Nos.2018FB091 and 2019FB129) the Project of the Department of Education of Yunnan Province (No.2019J0001) 

主　　题：Hierarchical NiFe2O4 Core-shell Gas sensor Toluene 

摘      要：The extensive use of toluene stimulates the effective detection by sensitive gas sensors based on unique ***,hierarchical flower-like NiFe_(2)O_(4) with core-shell architecture was synthesized by a facile hydrothermal method in the presence of urea and NH4 *** controllable experiments indicated that the burr spheres and football-like samples were produced with individual urea or NH4 *** flower-like NiFe_(2)O_(4) sensor exhibited outstanding sensitivity of 19.95 to 100×10^(-6) toluene with low detection limit(1×10^(-6)).Furthermore,the sensor showed superior sensing selectivity and longterm stability to *** excellent sensing properties could largely arise from a combination of high surface area,numerous active sites,porous structures,and the native catalytic characteristics of NiFe2 O4 to facilitate toluene molecules adsorption,diffusion,and reaction.