CAS OpenIR
Sr-Doped Cubic In2O3/Rhombohedral In2O3 Homojunction Nanowires for Highly Sensitive and Selective Breath Ethanol Sensing: Experiment and DFT Simulation Studies
Song, Longfei1,2,4; Dou, Kunpeng5; Wang, Rongrong3; Leng, Ping3; Luo, Linqu1,2; Xi, Yan1,2; Kaun, Chao-Cheng6; Han, Ning4; Wang, Fengyun1,2; Chen, Yunfa4
2020-01-08
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume12Issue:1Pages:1270-1279
AbstractIn 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.
KeywordSr-doped In2O3 nanowires rhombohedral phase breath ethanol sensors high sensitivity and selectivity density functional theory
DOI10.1021/acsami.9b15928
Language英语
WOS KeywordVOLATILE ORGANIC-COMPOUNDS ; EXHALED BREATH ; GAS-CHROMATOGRAPHY ; CRYSTAL-STRUCTURE ; HYDROGEN-SULFIDE ; CORUNDUM-TYPE ; HIGH-PRESSURE ; LUNG-CANCER ; SENSOR ; PERFORMANCE
Funding ProjectNational 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 Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationNational 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
WOS IDWOS:000507146100127
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39317
Collection中国科学院过程工程研究所
Corresponding AuthorHan, Ning; Wang, Fengyun
Affiliation1.Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
2.Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
3.Qingdao Univ, Affiliated Hosp, Dept Pharm, Qingdao 266003, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
5.Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266100, Peoples R China
6.Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan
Recommended Citation
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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