| Title: | A novel electronic nose based on porous In2O3 microtubes sensor array for the discrimination of VOCs |
| Author(s): | Yang W; Wan P; Jia M; Hu J; Guan Y; Feng L; |
| Address: | "Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, PR China. Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, Liaoning 116024, PR China. Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, PR China. Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, PR China. Electronic address: fengl@dicp.ac.cn" |
| DOI: | 10.1016/j.bios.2014.09.081 |
| ISSN/ISBN: | 1873-4235 (Electronic) 0956-5663 (Linking) |
| Abstract: | "We have innovatively developed an electronic nose consisting of only one type of semiconductor metal oxide (SMO) material. The representative SMO material, porous In2O3 microtubes in this work, offered great surface area and large gas penetration channels. By using a solvent casting process, different amounts of porous In2O3 microtubes were coated on Al2O3 substrate, forming a resistometric SMO sensor array-based electronic nose. Each sensing unit in the electronic nose exhibited independent response toward ethanol. We have successfully applied this electronic nose to distinguish four alcohols at the same concentrations (100 ppm), and also utilized the electronic nose for the discrimination of 14 volatile organic compounds (VOCs). Clear differentiation among all the 14 VOCs both at their immediately dangerous to life or health (IDLH) and the permissible exposure limit (PEL) concentrations has been achieved with no errors or misclassifications. We expect that this method will expand the application of SMO sensor array-based electronic nose which has been largely limited by the selection of commercially available SMOs and dopants" |
| Keywords: | Biomimetics/*instrumentation Conductometry/*instrumentation Equipment Design Equipment Failure Analysis Humans Indium/*chemistry *Nose *Semiconductors *Smell Transducers Volatile Organic Compounds/*analysis/chemistry Electronic nose In(2)O(3) Microtubes S; |
| Notes: | "MedlineYang, Wei Wan, Peng Jia, Mingyan Hu, Jiming Guan, Yafeng Feng, Liang eng Research Support, Non-U.S. Gov't England 2014/10/14 Biosens Bioelectron. 2015 Feb 15; 64:547-53. doi: 10.1016/j.bios.2014.09.081. Epub 2014 Oct 2" |
