Construction of hierarchical In_(2)O_(3)/In_(2)S_(3) microsphere heterostructures for TEA detection  

作　　者：Yongjie Zhang Cong Qin Run Zhang Yan Zhang Yan Wang Zhanying Zhang Jianliang Cao 

机构地区：[1]College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo,454000,China [2]State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization,Henan Polytechnic University,Jiaozuo,454000,China

出　　处：《Journal of Materiomics》2022年第6期1113-1121,共9页无机材料学学报（英文）

基　　金：supported by the National Natural Science Foundation of China(62173129);Program for Science&Technology Innovative Research Team in the University of Henan Province(21IRTSTHN006);Natural Science Foundation of Henan Province(212300410042).

摘　　要：Construction of heterojunction has been considered as an efficient strategy to enhance the gas-sensing performances of metal oxide semiconductors.On this basis,hierarchical In_(2)O_(3)/In_(2)S_(3) microsphere heterostructures were synthesized by partial oxidation of In_(2)S_(3) precursors which were obtained via a facile hydrothermal method.Besides,gas sensors based on the acquired materials were fabricated to investigate their sensing performances toward triethylamine(TEA).The results reveal that the gas sensor based on In_(2)O_(3)/In_(2)S_(3) exhibits a high response of 37 at 300℃ toward 0.45 mg/L TEA,which is 3.7 times higher than that of bare In_(2)O_(3).Meanwhile,it also possesses fast response/recovery time(19 s/154 s),good repeatability,selectivity and long-term stability.The excellent sensing performances toward TEA are mainly attributed to the massive oxygen vacancy defects and heterojunction formed between In_(2)O_(3) and In_(2)S_(3).This work provides a facile temperature-dependent route to controllably synthesize hierarchical In_(2)O_(3)/In_(2)S_(3) microsphere heterostructures,and the In_(2)O_(3)/In_(2)S_(3) sensor shows great application prospects in TEA detection.

关 键 词：In_(2)O_(3)/In_(2)S_(3) HETEROJUNCTION Hierarchical structure TRIETHYLAMINE Gas sensor 

分 类 号：O61[理学—无机化学]