Synthesis of tungsten-doped vanadium dioxide using a modified polyol method involving 1-dodecanol
DC Field | Value | Language |
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dc.contributor.author | Lee, Yonghyun | - |
dc.contributor.author | Jung, Sang Won | - |
dc.contributor.author | Park, Sang Hwi | - |
dc.contributor.author | Yoo, Jung Whan | - |
dc.contributor.author | Park, Juhyun | - |
dc.date.available | 2021-03-06T01:40:11Z | - |
dc.date.issued | 2020-12 | - |
dc.identifier.issn | 1996-1944 | - |
dc.identifier.issn | 1996-1944 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/43753 | - |
dc.description.abstract | The doping of tungsten into VO2 (M) via a polyol process that is based on oligomerization of ammonium metavanadate and ethylene glycol (EG) to synthesize a vanadyl ethylene glycolate (VEG) followed by postcalcination was carried out by simply adding 1-dodecanol and the tungsten source tungstenoxytetrachloride (WOCl4 ). Tungsten-doped VEGs (W-VEGs) and their calcinated compounds (Wx VO2 ) were prepared with varying mixing ratios of EG to 1-dodecanol and WOCl4 concentrations. Characterizations of W-VEGs by powder X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, and infrared and transmittance spectroscopy showed that tungsten elements were successfully doped into Wx VO2, thereby decreasing the metal-insulator transition temperature from 68 down to 51◦ C. Our results suggested that WOCl4 variously combined with 1-dodecanol might interrupt the linear growth of W-VEGs, but that such an interruption might be alleviated at the optimal 1:1 mixing ratio of EG to 1-dodecanol, resulting in the successful W doping. The difference in the solar modulations of a W0.0207 VO2 dispersion measured at 20 and 70◦ C was increased to 21.8% while that of a pure VO2 dispersion was 2.5%. It was suggested that WOCl4 coupled with both EG and 1-dodecanol at an optimal mixing ratio could improve the formation of W-VEG and Wx VO2 and that the bulky dodecyl chains might act as defects to decrease crystallinity. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. | - |
dc.format.extent | 13 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | MDPI AG | - |
dc.title | Synthesis of tungsten-doped vanadium dioxide using a modified polyol method involving 1-dodecanol | - |
dc.type | Article | - |
dc.identifier.doi | 10.3390/ma13235384 | - |
dc.identifier.bibliographicCitation | Materials, v.13, no.23, pp 1 - 13 | - |
dc.description.isOpenAccess | Y | - |
dc.identifier.wosid | 000597581800001 | - |
dc.identifier.scopusid | 2-s2.0-85096699543 | - |
dc.citation.endPage | 13 | - |
dc.citation.number | 23 | - |
dc.citation.startPage | 1 | - |
dc.citation.title | Materials | - |
dc.citation.volume | 13 | - |
dc.type.docType | Article | - |
dc.publisher.location | 스위스 | - |
dc.subject.keywordAuthor | Nanoparticles | - |
dc.subject.keywordAuthor | Smart windows | - |
dc.subject.keywordAuthor | Thermochromic | - |
dc.subject.keywordAuthor | Tungsten doping | - |
dc.subject.keywordAuthor | Vanadium oxide | - |
dc.subject.keywordPlus | Aliphatic compounds | - |
dc.subject.keywordPlus | Crystallinity | - |
dc.subject.keywordPlus | Differential scanning calorimetry | - |
dc.subject.keywordPlus | Dispersions | - |
dc.subject.keywordPlus | Ethylene | - |
dc.subject.keywordPlus | Ethylene glycol | - |
dc.subject.keywordPlus | Metal insulator boundaries | - |
dc.subject.keywordPlus | Metal insulator transition | - |
dc.subject.keywordPlus | Mixing | - |
dc.subject.keywordPlus | Scanning electron microscopy | - |
dc.subject.keywordPlus | Semiconductor insulator boundaries | - |
dc.subject.keywordPlus | Tungsten compounds | - |
dc.subject.keywordPlus | Tungsten metallography | - |
dc.subject.keywordPlus | Vanadium dioxide | - |
dc.subject.keywordPlus | Ammonium metavanadate | - |
dc.subject.keywordPlus | Linear growth | - |
dc.subject.keywordPlus | Modified polyol method | - |
dc.subject.keywordPlus | Optimal mixing | - |
dc.subject.keywordPlus | Polyol process | - |
dc.subject.keywordPlus | Powder X ray diffraction | - |
dc.subject.keywordPlus | Solar modulation | - |
dc.subject.keywordPlus | Transmittance spectroscopies | - |
dc.subject.keywordPlus | Chlorine compounds | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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