2D SnSe_(2)micro-flower decorated with 0D In_(2)O_(3) nanoparticles for low-temperature low-concentration TEA detection  

作　　者：Li Wang Jianpeng Li Cheng Xu Ziqin Yang Xiangyun Tan Zhihu Dong Li Xu Dongwei Zhang Chunqing He 

机构地区：[1]School of Physics Science and Technology,Wuhan University,Wuhan,430000,China [2]School of Microelectronics,Dalian University of Technology,Dalian,116000,China [3]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou,730000,China [4]School of Physical Science and Technology,Lanzhou University,222 South TianshuiRoad,Lanzhou,730000,China

出　　处：《Nano Materials Science》2024年第6期764-774,共11页纳米材料科学(英文版)

基　　金：supported by the National Natural Science Foundation of China(NSFC)(Nos.12075172 and 12375288);National Key R&D Program of China(Grant No.2019YFA0210003);Wuhan University for Field Emission Transmission Electron Microscope(FETEM,JEOL JEM-F200).

摘　　要：Triethylamine,a crucial industrial raw material,poses significant threats to both the ecosystem and human health.However,detecting lower concentrations of TEA remains an arduous task.In this study,we report the facile hydrothermal and ultrasonic treatment synthesis of 2D SnSe_(2)micro-flower modified with 0D In_(2)O_(3)nanoparticles to form SnSe_(2)/In_(2)O_(3)heterojunctions for the first time.The SnSe_(2)/In_(2)O_(3)sensor has a response value of 4.86 for 10 ppm TEA gas at 120C,with response and recovery times of 18 s and 79 s respectively,and detection limits as low as 100 ppb.In addition,the SnSe_(2)/In_(2)O_(3)sensor is essentially unaffected by humidity in the 30%RH to 60%RH range,and the SnSe_(2)/In_(2)O_(3)sensor response value decreases slightly in the 70%RH to 97%RH range,demonstrating excellent humidity tolerance.More importantly,the sensor maintained excellent cyclicstability performance during a four-month cyclic stability test.The improved gas-sensitive performance can be attributed to the large number of n-n heterojunctions in the SnSe_(2)/In_(2)O_(3)material,which enhances the interfacial charge transfer,as well as the active-sites on the material surface.This work serves as a valuable complement to the TEA gas sensor and holds significant potential for detecting low concentrations of TEA at low temperatures in environmental sensing applications.

关 键 词：SnSe_(2) In_(2)O_(3) Ultra-sonication composite Triethylamine sensor n-n heterojunctions Low-power consumption 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]