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Sr-Doped Cubic In2O3/Rhombohedral In2O3 Homojunction Nanowires for Highly Sensitive and Selective Breath Ethanol Sensing: Experiment and DFT Simulation Studies

文献类型：期刊论文

作者Song, Longfei3,5,6; Dou, Kunpeng1; Wang, Rongrong2; Leng, Ping2; Luo, Linqu5,6; Xi, Yan5,6; Kaun, Chao-Cheng4; Han, Ning3; Wang, Fengyun5,6; Chen, Yunfa3
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2020-01-08
卷号12期号:1页码:1270-1279
ISSN号1944-8244
关键词Sr-doped In2O3 nanowires rhombohedral phase breath ethanol sensors high sensitivity and selectivity density functional theory
DOI10.1021/acsami.9b15928
英文摘要In recent years, it is urgent and challenging to fabricate highly sensitive and selective gas sensors for breath analyses. In this work, Sr-doped cubic In2O3/rhombohedral In2O3 homojunction nanowires (NWs) are synthesized by one-step electrospun technology. The Sr doping alters the cubic phase of pure In2O3 into the rhombohedral phase, which is verified by the high-resolution transmittance electron microscopy, X-ray diffraction, and Raman spectroscopy, and is attributable to the low cohesive energy as calculated by the 2 a 4 density functional theory (DFT). As a proof-of-concept of fatty liver biomarker sensing, ethanol sensors are fabricated using the electrospun In2O3 NWs. The results show that 8 wt % Sr-doped In2O3 shows the highest ethanol sensing performance with a high response of 21-1 ppm, a high selectivity over other interfering gases such as methanol, acetone, formaldehyde, toluene, xylene, and benzene, a high stability measured in 6 weeks, and also a high resistance to high humidity of 80%. The outstanding ethanol sensing performance is attributable to the enhanced ethanol adsorption by Sr doping as calculated by DFT, the stable rhombohedral phase and the preferred (104) facet exposure, and the formed homojunctions favoring the electron transfer. All these results show the effective structural modification of In2O3 by Sr doping, and also the great potency of the homojunction Sr-doped In2O3 NWs for highly sensitive, selective, and stable breath ethanol sensing.
WOS关键词VOLATILE ORGANIC-COMPOUNDS ; EXHALED BREATH ; GAS-CHROMATOGRAPHY ; CRYSTAL-STRUCTURE ; HYDROGEN-SULFIDE ; CORUNDUM-TYPE ; HIGH-PRESSURE ; LUNG-CANCER ; SENSOR ; PERFORMANCE
资助项目National Key R&D Program of China[2016YFC0207100] ; Shandong Provincial Natural Science Foundation, China[ZR2018JL021] ; Shandong Provincial Natural Science Foundation, China[ZR2014EMQ011] ; Key Research and Development Program[2019GGX102067] ; National Natural Science Foundation of China[51402160] ; Taishan Scholar Program of Shandong Province, China ; Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Ocean University of China[3002000-861701013151] ; Shandong Provincial Natural Science Foundation[ZR2019BA003]
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000507146100127
资助机构National Key R&D Program of China ; Shandong Provincial Natural Science Foundation, China ; Key Research and Development Program ; National Natural Science Foundation of China ; Taishan Scholar Program of Shandong Province, China ; Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Ocean University of China ; Shandong Provincial Natural Science Foundation
源URL[http://ir.ipe.ac.cn/handle/122111/39316]  
专题中国科学院过程工程研究所
通讯作者Han, Ning; Wang, Fengyun
作者单位1.Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266100, Peoples R China
2.Qingdao Univ, Affiliated Hosp, Dept Pharm, Qingdao 266003, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
4.Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan
5.Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
6.Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Song, Longfei,Dou, Kunpeng,Wang, Rongrong,et al. Sr-Doped Cubic In2O3/Rhombohedral In2O3 Homojunction Nanowires for Highly Sensitive and Selective Breath Ethanol Sensing: Experiment and DFT Simulation Studies[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(1):1270-1279.
APA Song, Longfei.,Dou, Kunpeng.,Wang, Rongrong.,Leng, Ping.,Luo, Linqu.,...&Chen, Yunfa.(2020).Sr-Doped Cubic In2O3/Rhombohedral In2O3 Homojunction Nanowires for Highly Sensitive and Selective Breath Ethanol Sensing: Experiment and DFT Simulation Studies.ACS APPLIED MATERIALS & INTERFACES,12(1),1270-1279.
MLA Song, Longfei,et al."Sr-Doped Cubic In2O3/Rhombohedral In2O3 Homojunction Nanowires for Highly Sensitive and Selective Breath Ethanol Sensing: Experiment and DFT Simulation Studies".ACS APPLIED MATERIALS & INTERFACES 12.1(2020):1270-1279.

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