Long-term stability of superhydrophilic oxygen plasma-modified single-walled carbon nanotube network surfaces and the influence on ammonia gas detection
DC Field | Value | Language |
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dc.contributor.author | Min, Sungjoon | - |
dc.contributor.author | Kim, Joonhyub | - |
dc.contributor.author | Park, Chanwon | - |
dc.contributor.author | Jin, Joon-Hyung | - |
dc.contributor.author | Min, Nam Ki | - |
dc.date.accessioned | 2021-09-03T03:51:48Z | - |
dc.date.available | 2021-09-03T03:51:48Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-07-15 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/82819 | - |
dc.description.abstract | Single-walled carbon nanotube (SWCNT) networks are subjected to a low-powered oxygen plasma for the surface modification. Changes in the surface chemical composition and the stability of the plasma treated SWCNT (p-SWCNT) with aging in air for up to five weeks are studied using X-ray photoelectron spectroscopy (XPS) and contact angle analysis. The contact angle decreases from 120 degrees of the untreated hydrophobic SWCNT to 0 degrees for the superhydrophilic p-SWCNT. Similarly, the ratio of oxygen to carbon (O:C) based on the XPS spectra increases from 0.25 to 1.19, indicating an increase in surface energy of the p-SWCNT. The enhanced surface energy is gradually dissipated and the p-SWCNT network loses the superhydrophilic surface property. However, it never revert to the original hydrophobic surface state but to a metastable hydrophilic state. The aging effect on sensitivity of the p-SWCNT network-based ammonia sensor is investigated to show the importance of the aging process for the stabilization of the p-SWCNT. The best sensitivity for monitoring NH3 gas is observed with the as-prepared p-SWCNT, and the sensitivity decreases as similar as the p-SWCNT loses its hydrophilicity with time goes by. After a large performance degradation during the aging time for about two weeks, the response characteristics including sensitivity and response time of the p-SWCNT to ammonia gas are stabilized and eventually saturated. (C) 2017 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | HYDROPHOBIC RECOVERY | - |
dc.subject | SENSORS | - |
dc.subject | FUNCTIONALIZATION | - |
dc.subject | DEFECTS | - |
dc.title | Long-term stability of superhydrophilic oxygen plasma-modified single-walled carbon nanotube network surfaces and the influence on ammonia gas detection | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Min, Nam Ki | - |
dc.identifier.doi | 10.1016/j.apsusc.2017.03.080 | - |
dc.identifier.scopusid | 2-s2.0-85015425503 | - |
dc.identifier.wosid | 000401201500013 | - |
dc.identifier.bibliographicCitation | APPLIED SURFACE SCIENCE, v.410, pp.105 - 110 | - |
dc.relation.isPartOf | APPLIED SURFACE SCIENCE | - |
dc.citation.title | APPLIED SURFACE SCIENCE | - |
dc.citation.volume | 410 | - |
dc.citation.startPage | 105 | - |
dc.citation.endPage | 110 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | HYDROPHOBIC RECOVERY | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | FUNCTIONALIZATION | - |
dc.subject.keywordPlus | DEFECTS | - |
dc.subject.keywordAuthor | Long-term stability | - |
dc.subject.keywordAuthor | NH3 sensor | - |
dc.subject.keywordAuthor | Oxygen plasma modification | - |
dc.subject.keywordAuthor | Superhydrophilic SWCNT | - |
dc.subject.keywordAuthor | Wettability | - |
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