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DC Field | Value | Language |
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dc.citation.startPage | 139545 | - |
dc.citation.title | JOURNAL OF MOLECULAR STRUCTURE | - |
dc.citation.volume | 1319 | - |
dc.contributor.author | Seo, Jae-Won | - |
dc.contributor.author | Pophali, Amol | - |
dc.contributor.author | An, Seongwoo | - |
dc.contributor.author | Liang, Chi Seng Lee | - |
dc.contributor.author | Li, Sihan | - |
dc.contributor.author | Liu, Henry | - |
dc.contributor.author | Kim, Jihun | - |
dc.contributor.author | An, Kwangjin | - |
dc.contributor.author | Kim, Jaewoo | - |
dc.contributor.author | Kim, Taejin | - |
dc.date.accessioned | 2024-08-28T10:05:05Z | - |
dc.date.available | 2024-08-28T10:05:05Z | - |
dc.date.created | 2024-08-27 | - |
dc.date.issued | 2025-01 | - |
dc.description.abstract | The molecular structure stability at low and high temperature is important for an industrial application. The boron nitride-based materials, such as hexagonal boron nitride (h-BN) and boron nitride nanotubes (BNNTs), have been interested due to their high oxidation resistance and thermal stability. In this study, ex-situ and in-situ characterization techniques (e.g., Raman spectroscopy, X-ray Diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR)) were applied to investigate the structural change of BNNT and h-BN at high (up to 800 degrees C) and low (down to-50 degrees C) temperatures. The Raman spectroscopy results showed that at high temperatures (800 degrees C), h-BN exhibited a significant red shift under both inert and oxidizing conditions, while BNNT showed no peak shift, indicating its more stable structural resistance compared to h-BN. Both h-BN and BNNT showed no peak shift after cooling to low temperatures (-50 degrees C). Stability of h-BN and BNNT up to a high temperature of 800 degrees C was revealed from the thermogravimetric analysis (TGA) and FTIR spectroscopy results. The FTIR results also indicate that under oxidizing conditions, heating h-BN results in the formation of more hydroxyl groups compared to BNNT. The in-situ XRD results showed a greater magnitude of lower 2 theta theta shift with increasing temperatures for h-BN compared to BNNT. Additionally, there was a more significant increase in FWHM values with respect to temperatures for h-BN than BNNT regardless of the sample under inert or oxidizing conditions. The characterization results from this study indicate that BN-based materials, especially BNNT, are suitable candidates for high temperature chemical reaction applications. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MOLECULAR STRUCTURE, v.1319, pp.139545 | - |
dc.identifier.doi | 10.1016/j.molstruc.2024.139545 | - |
dc.identifier.issn | 0022-2860 | - |
dc.identifier.scopusid | 2-s2.0-85200645667 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/83571 | - |
dc.identifier.wosid | 001291285300001 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER | - |
dc.title | Fundamental structural study of hexagonal boron nitride (h-BN) and boron nitride nanotube (BNNT) at low and high temperatures | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Low-high temperatures | - |
dc.subject.keywordAuthor | Boron nitride nanotubes (BNNTs) | - |
dc.subject.keywordAuthor | Hexagonal boron nitride (h-BN) | - |
dc.subject.keywordAuthor | In-situ spectroscopy | - |
dc.subject.keywordPlus | COVALENT FUNCTIONALIZATION | - |
dc.subject.keywordPlus | THERMAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | RAMAN-SPECTROSCOPY | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | DISPERSION | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | STRENGTH | - |
dc.subject.keywordPlus | ELECTRICAL-PROPERTIES | - |
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