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Ag-Modified In2O3 Nanoparticles for Highly Sensitive and Selective Ethanol Alarming
Wang, Jinxiao1,2; Xie, Zheng1; Si, Yuan3; Liu, Xinyi3; Zhou, Xinyuan1; Yang, Jianfeng4; Hu, Peng1; Han, Ning1; Yang, Jun2; Chen, Yunfa1
2017-10-01
发表期刊SENSORS
ISSN1424-8220
卷号17期号:10页码:1
摘要

Pure In2O3 nanoparticles are prepared by a facile precipitation method and are further modified by Ag. The synthesized samples are characterized by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, Raman and UV-Vis spectra. The results show the successful heterojunction formation between Ag and In2O3. Gas sensing property measurements show that the 5 mol % Ag-modified In2O3 sensor has the response of 67 to 50 ppm ethanol, and fast response and recovery time of 22.3 and 11.7 s. The response is over one magnitude higher than that of pure In2O3, which can be attributed to the enhanced catalytic activity of Ag-modified In2O3 as compared with the pure one. The mechanism of the gas sensor can be explained by the spillover effect of Ag, which enhances the oxygen adsorption onto the surface of In2O3 and thus give rise to the higher activity and larger surface barrier height.

关键词In2o3 Nanoparticles Ag Modification Heterojunction High Response Ethanol Sensing
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.3390/s17102220
收录类别SCI
语种英语
关键词[WOS]Gas-sensing Properties ; Hierarchical Nanostructures ; Sensors ; Zno ; Acetone ; Oxide ; Microstructure ; Nanocomposites ; Performance ; Evaporation
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
WOS类目Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
项目资助者National Key R&D Program of China(2016YFC0207100) ; National Natural Science Foundation of China(11575228) ; State Key Laboratory of Multiphase Complex Systems(MPCS-2014-C-01)
WOS记录号WOS:000414931500062
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23516
专题研究所(批量导入)
通讯作者Han, Ning; Yang, Jun
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Shaanxi, Peoples R China
3.Beijing ChenJingLun High Sch, Beijing 100101, Peoples R China
4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714
Wang, Jinxiao,Xie, Zheng,Si, Yuan,et al. Ag-Modified In2O3 Nanoparticles for Highly Sensitive and Selective Ethanol Alarming[J]. SENSORS,2017,17(10):1.
APA Wang, Jinxiao.,Xie, Zheng.,Si, Yuan.,Liu, Xinyi.,Zhou, Xinyuan.,...&Chen, Yunfa.(2017).Ag-Modified In2O3 Nanoparticles for Highly Sensitive and Selective Ethanol Alarming.SENSORS,17(10),1.
MLA Wang, Jinxiao,et al."Ag-Modified In2O3 Nanoparticles for Highly Sensitive and Selective Ethanol Alarming".SENSORS 17.10(2017):1.
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