Highly sensitive and selective H2 sensing by ZnO nanofibers and the underlying sensing mechanism
[Display omitted] •Exceptional hydrogen gas sensor fabricated with ZnO nanofibers.•ZnO nanofibers show outstanding, selective H2 response.•Semiconductor-to-metal transition in the presence of H2 is the responsible mechanism. We report, and propose a mechanism for, the exceptional hydrogen gas (H2) s...
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| Veröffentlicht in: | Journal of hazardous materials 2015-04, Vol.286, p.229-235 |
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| container_title | Journal of hazardous materials |
| container_volume | 286 |
| creator | Katoch, Akash Choi, Sun-Woo Kim, Hyoun Woo Kim, Sang Sub |
| description | [Display omitted]
•Exceptional hydrogen gas sensor fabricated with ZnO nanofibers.•ZnO nanofibers show outstanding, selective H2 response.•Semiconductor-to-metal transition in the presence of H2 is the responsible mechanism.
We report, and propose a mechanism for, the exceptional hydrogen gas (H2) sensing ability of ZnO nanofibers. In comparison to SnO2 nanofibers, ZnO nanofibers show outstanding H2 gas response and unmistakable H2 selectivity. Different from the reducing gas effect observed in SnO2 nanofibers, a semiconductor-to-metal transition that occurs in the presence of H2 gas molecules is responsible for the exceptional response and selectivity of ZnO nanofibers to H2. Notably, the presence of nanograins within nanofibers further intensifies the resistance modulation observed due to this transition. |
| doi_str_mv | 10.1016/j.jhazmat.2014.12.007 |
| format | Article |
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•Exceptional hydrogen gas sensor fabricated with ZnO nanofibers.•ZnO nanofibers show outstanding, selective H2 response.•Semiconductor-to-metal transition in the presence of H2 is the responsible mechanism.
We report, and propose a mechanism for, the exceptional hydrogen gas (H2) sensing ability of ZnO nanofibers. In comparison to SnO2 nanofibers, ZnO nanofibers show outstanding H2 gas response and unmistakable H2 selectivity. Different from the reducing gas effect observed in SnO2 nanofibers, a semiconductor-to-metal transition that occurs in the presence of H2 gas molecules is responsible for the exceptional response and selectivity of ZnO nanofibers to H2. Notably, the presence of nanograins within nanofibers further intensifies the resistance modulation observed due to this transition.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2014.12.007</identifier><identifier>PMID: 25590816</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Equipment Design ; exhibitions ; Gas sensor ; gases ; hydrogen ; Hydrogen - analysis ; Microscopy, Electron, Scanning ; nanofibers ; Nanofibers - chemistry ; Semiconductors ; Sensing mechanism ; Sensitivity and Specificity ; Surface metallization ; Surface Properties ; toxic substances ; Zinc Oxide - chemistry ; ZnO</subject><ispartof>Journal of hazardous materials, 2015-04, Vol.286, p.229-235</ispartof><rights>2014 Elsevier B.V.</rights><rights>Copyright © 2014 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c412t-313aa2b7f02e1ff23fef5360f5cbba7fd2304f9a48274fd87d66226e568799fc3</citedby><cites>FETCH-LOGICAL-c412t-313aa2b7f02e1ff23fef5360f5cbba7fd2304f9a48274fd87d66226e568799fc3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304389414009893$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25590816$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Katoch, Akash</creatorcontrib><creatorcontrib>Choi, Sun-Woo</creatorcontrib><creatorcontrib>Kim, Hyoun Woo</creatorcontrib><creatorcontrib>Kim, Sang Sub</creatorcontrib><title>Highly sensitive and selective H2 sensing by ZnO nanofibers and the underlying sensing mechanism</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>[Display omitted]
•Exceptional hydrogen gas sensor fabricated with ZnO nanofibers.•ZnO nanofibers show outstanding, selective H2 response.•Semiconductor-to-metal transition in the presence of H2 is the responsible mechanism.
We report, and propose a mechanism for, the exceptional hydrogen gas (H2) sensing ability of ZnO nanofibers. In comparison to SnO2 nanofibers, ZnO nanofibers show outstanding H2 gas response and unmistakable H2 selectivity. Different from the reducing gas effect observed in SnO2 nanofibers, a semiconductor-to-metal transition that occurs in the presence of H2 gas molecules is responsible for the exceptional response and selectivity of ZnO nanofibers to H2. Notably, the presence of nanograins within nanofibers further intensifies the resistance modulation observed due to this transition.</description><subject>Equipment Design</subject><subject>exhibitions</subject><subject>Gas sensor</subject><subject>gases</subject><subject>hydrogen</subject><subject>Hydrogen - analysis</subject><subject>Microscopy, Electron, Scanning</subject><subject>nanofibers</subject><subject>Nanofibers - chemistry</subject><subject>Semiconductors</subject><subject>Sensing mechanism</subject><subject>Sensitivity and Specificity</subject><subject>Surface metallization</subject><subject>Surface Properties</subject><subject>toxic substances</subject><subject>Zinc Oxide - chemistry</subject><subject>ZnO</subject><issn>0304-3894</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1P4zAQQC3EaimwPwGUI5cEf8V2TgghoEhIXHYvezGOM6auEgfstFL3169LC9f6Yo3mzYxmHkIXBFcEE3G9rJYL828wU0Ux4RWhFcbyCM2IkqxkjIljNMMM85Kphp-g05SWGGMia_4TndC6brAiYoZe5_5t0W-KBCH5ya-hMKHLUQ_2M5rTXSq8Fe2m-BteimDC6HwLMX2i0wKKVegg9pst9AUPYBcm-DScox_O9Al-7f8z9Ofh_vfdvHx-eXy6u30uLSd0KhlhxtBWOkyBOEeZA1czgV1t29ZI19G8i2sMV1Ry1ynZCUGpgFoo2TTOsjN0tev7HsePFaRJDz5Z6HsTYFwlTRQT-dWcH0Ylowo3SsrDaO5IKGmwyGi9Q20cU4rg9Hv0g4kbTbDeKtNLvVemt8o0oTory3WX-xGrdoDuu-rLUQZudgDk8609RJ2sh2Ch8zFb0t3oD4z4DwsTqhg</recordid><startdate>20150409</startdate><enddate>20150409</enddate><creator>Katoch, Akash</creator><creator>Choi, Sun-Woo</creator><creator>Kim, Hyoun Woo</creator><creator>Kim, Sang Sub</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U7</scope><scope>C1K</scope><scope>7S9</scope><scope>L.6</scope></search><sort><creationdate>20150409</creationdate><title>Highly sensitive and selective H2 sensing by ZnO nanofibers and the underlying sensing mechanism</title><author>Katoch, Akash ; Choi, Sun-Woo ; Kim, Hyoun Woo ; Kim, Sang Sub</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c412t-313aa2b7f02e1ff23fef5360f5cbba7fd2304f9a48274fd87d66226e568799fc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Equipment Design</topic><topic>exhibitions</topic><topic>Gas sensor</topic><topic>gases</topic><topic>hydrogen</topic><topic>Hydrogen - analysis</topic><topic>Microscopy, Electron, Scanning</topic><topic>nanofibers</topic><topic>Nanofibers - chemistry</topic><topic>Semiconductors</topic><topic>Sensing mechanism</topic><topic>Sensitivity and Specificity</topic><topic>Surface metallization</topic><topic>Surface Properties</topic><topic>toxic substances</topic><topic>Zinc Oxide - chemistry</topic><topic>ZnO</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Katoch, Akash</creatorcontrib><creatorcontrib>Choi, Sun-Woo</creatorcontrib><creatorcontrib>Kim, Hyoun Woo</creatorcontrib><creatorcontrib>Kim, Sang Sub</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Katoch, Akash</au><au>Choi, Sun-Woo</au><au>Kim, Hyoun Woo</au><au>Kim, Sang Sub</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Highly sensitive and selective H2 sensing by ZnO nanofibers and the underlying sensing mechanism</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2015-04-09</date><risdate>2015</risdate><volume>286</volume><spage>229</spage><epage>235</epage><pages>229-235</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><abstract>[Display omitted]
•Exceptional hydrogen gas sensor fabricated with ZnO nanofibers.•ZnO nanofibers show outstanding, selective H2 response.•Semiconductor-to-metal transition in the presence of H2 is the responsible mechanism.
We report, and propose a mechanism for, the exceptional hydrogen gas (H2) sensing ability of ZnO nanofibers. In comparison to SnO2 nanofibers, ZnO nanofibers show outstanding H2 gas response and unmistakable H2 selectivity. Different from the reducing gas effect observed in SnO2 nanofibers, a semiconductor-to-metal transition that occurs in the presence of H2 gas molecules is responsible for the exceptional response and selectivity of ZnO nanofibers to H2. Notably, the presence of nanograins within nanofibers further intensifies the resistance modulation observed due to this transition.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>25590816</pmid><doi>10.1016/j.jhazmat.2014.12.007</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of hazardous materials, 2015-04, Vol.286, p.229-235 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Equipment Design exhibitions Gas sensor gases hydrogen Hydrogen - analysis Microscopy, Electron, Scanning nanofibers Nanofibers - chemistry Semiconductors Sensing mechanism Sensitivity and Specificity Surface metallization Surface Properties toxic substances Zinc Oxide - chemistry ZnO |
| title | Highly sensitive and selective H2 sensing by ZnO nanofibers and the underlying sensing mechanism |
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