Low concentration isopropanol gas sensing properties of Ag nanoparticles decorated In_(2)O_(3) hollow spheres  

作　　者：Chao ZHANG Yunchun HUAN Ying LI Yifan LUO Marc DEBLIQUY 

机构地区：[1]College of Mechanical Engineering,Yangzhou University,Yangzhou,225127,China [2]Materials Science Department,University of Mons,Mons,7000,Belgium

出　　处：《Journal of Advanced Ceramics》2022年第3期379-391,共13页先进陶瓷（英文）

基　　金：This work is supported by the National Natural Science Foundation of China(No.51872254);the National Key R&D Program of China(No.2017YFE0115900);the Outstanding Youth Foundation of Jiangsu Province of China(No.BK20211548);The authors also thank the European Regional Development Fund(ERDF)and the Walloon Region of Belgium through the Interreg V France-Wallonie-Vlaanderen program,PATHACOV project(No.1.1.297);the Micro project co-funded by the European Regional Development Fund(ERDF),and Wallonia,Belgium(No.675781-642409);This work is also supported by the CommunautéWallonie-Bruxelles via the WBI-MOST-China(No.SUB/2019/430254).

摘　　要：In order to detect low concentrations of volatile organic compounds (VOCs) for the early diagnosis of lung cancer, sensors based on hollow spheres of In_(2)O_(3) were prepared through the soft template method. Ag nanoparticle decorated In_(2)O_(3) composites were synthesized via dipping and annealing. The microstructure, phase composition, element distribution, and state of Ag were analyzed by the scanning electron microscopy (SEM), X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS). The gas sensing tests showed that Ag-In_(2)O_(3) sensors had the highest response to isopropanol at 300 ℃. The best response of Ag-In_(2)O_(3) composite sensor was 5.2, which had a significant improvement compared with only In_(2)O_(3). Moreover, the response and recovery time of Ag-In_(2)O_(3) composite sensor was significantly shortened. The improved sensing properties of Ag-In_(2)O_(3) composite sensor could be attributed to the Schottky barrier created at Ag-In_(2)O_(3) interface and catalytical effect of Ag.

关 键 词：Ag-In_(2)O_(3) hollow spheres ISOPROPANOL gas sensor 

分 类 号：R734.2[医药卫生—肿瘤] R730.4[医药卫生—临床医学] TB383.1[一般工业技术—材料科学与工程]