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Highly sensitive and selective ethanol and acetone gas sensors based on modified ZnO nanomaterials
Wang, Jinxiao1,2; Yang, Jun1; Han, Ning2,3; Zhou, Xinyuan2; Gong, Shuyan2; Yang, Jianfeng4; Hu, Peng2; Chen, Yunfa2,3
2017-05-05
发表期刊MATERIALS & DESIGN
ISSN0264-1275
卷号121页码:69-76
摘要Nowadays, highly sensitive metal oxide semiconductor gas sensors are exerting a growing important influence on the detection of target gases. It is still challenging to get both high sensitivity and selectivity to effectively distinguish gas mixtures. In this study, Mn doped ZnO (MZO) is prepared by a facile co-precipitation method and then further modified by CdO addition. The results show that 2.2 mol% MZO has high responses to both acetone and ethanol, while 10 mol% CdO activated 1 mol% MZO exhibits excellent sensitivity to ethanol and neglectable response to acetone. This is explained by the enhanced alkalinity of ZnO by the CdO addition expelling acetone from adsorption onto the sensor surface, which is verified by temperature-programmed CO2 desorption. Moreover, the CdO-MZO gas sensor has an optimized working temperature of 240 degrees C, far lower than 340 degrees C of MZO, due to the higher oxidativity as proved by the temperature-programmed H-2 reduction. The MZO and CdO-MZO gas sensors are then used as a sensor array to distinguish the ethanol and acetone concentrations in mixtures with varied ratios, showing the promise of the gas sensor property tailoring approach for future high performance gas sensors. (C) 2017 Published by Elsevier Ltd.
关键词Mn Doped Zno Cdo Modification Operating Temperature Sensitivity Selectivity
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.matdes.2017.02.048
收录类别SCI
语种英语
关键词[WOS]DOPED ZNO ; SENSING PROPERTIES ; ROOM-TEMPERATURE ; NANOPARTICLES ; NANOSTRUCTURES ; NANOCOMPOSITES ; FILM ; PHOTOCATALYST ; NANOCRYSTALS ; MICROSPHERES
WOS研究方向Materials Science
WOS类目Materials Science, Multidisciplinary
项目资助者National Key Research and Development Program(2016YFC0207101) ; National Natural Science Foundation of China(11575228) ; State Key Laboratory of Multiphase Complex Systems(MPCS-2014-C-01)
WOS记录号WOS:000399625000008
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22484
专题多相复杂系统国家重点实验室
作者单位1.Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
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Wang, Jinxiao,Yang, Jun,Han, Ning,et al. Highly sensitive and selective ethanol and acetone gas sensors based on modified ZnO nanomaterials[J]. MATERIALS & DESIGN,2017,121:69-76.
APA Wang, Jinxiao.,Yang, Jun.,Han, Ning.,Zhou, Xinyuan.,Gong, Shuyan.,...&Chen, Yunfa.(2017).Highly sensitive and selective ethanol and acetone gas sensors based on modified ZnO nanomaterials.MATERIALS & DESIGN,121,69-76.
MLA Wang, Jinxiao,et al."Highly sensitive and selective ethanol and acetone gas sensors based on modified ZnO nanomaterials".MATERIALS & DESIGN 121(2017):69-76.
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