Porous multi-walled carbon nanotubes by using catalytic oxidation via transition metal oxide
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Sang Yun | - |
dc.contributor.author | Kim, Do-Hyun | - |
dc.contributor.author | Choi, Seung Chol | - |
dc.contributor.author | Lee, Dong-Jin | - |
dc.contributor.author | Choi, Ji Yoon | - |
dc.contributor.author | Kim, Hong-Dae | - |
dc.date.accessioned | 2021-09-05T06:34:59Z | - |
dc.date.available | 2021-09-05T06:34:59Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-08 | - |
dc.identifier.issn | 1387-1811 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/97872 | - |
dc.description.abstract | Porous carbon materials are attractive due to their wide applications in gas separation, water purification, catalyst support, and electrodes for energy system. Especially, it is interesting to create a porous structure on nano-carbon material. In this work, we report an easy method to create porous multi-walled carbon nanotubes (MWCNTs) by using the catalytic oxidation via transition metal oxide (C + O-2 = CO or CO2). We selected Co and Fe elements as catalyst sources for transition metal oxide. Under different oxidation time conditions (2 and 3 h), Co and Fe precursor-impregnated MWCNTs were oxidized at 300 and 350 degrees C in air, respectively. In transmission electron microscopy analysis, we observed various shapes of porous structures such as pits and thinned walls, and nanoparticles (NPs) were present around the porous structures on MWCNTs. In addition, a tubular structure and the original crystallinity of MWCNTs were maintained even after creating a porous structure on MWCNTs. X-ray diffraction measurements confirmed the crystal structure of NPs, indicating that Co and Fe elements were converted into Co3O4 and gamma-Fe2O3 after oxidation, respectively. Especially, X-ray photoelectron spectroscopy was used to confirm the oxidation state of gamma-Fe2O3. Eventually, the porous structures resulted in the increase of specific surface area and mesopore volume of MWCNTs. We think that porous MWCNTs can be applied in the fields which require an active surface as well as a porous structure of MWCNTs. (C) 2014 Elsevier Inc. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | GASIFICATION | - |
dc.subject | ACTIVATION | - |
dc.subject | OXYGEN | - |
dc.subject | WATER | - |
dc.subject | COAL | - |
dc.title | Porous multi-walled carbon nanotubes by using catalytic oxidation via transition metal oxide | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Do-Hyun | - |
dc.identifier.doi | 10.1016/j.micromeso.2014.03.040 | - |
dc.identifier.scopusid | 2-s2.0-84898809724 | - |
dc.identifier.wosid | 000337867300007 | - |
dc.identifier.bibliographicCitation | MICROPOROUS AND MESOPOROUS MATERIALS, v.194, pp.46 - 51 | - |
dc.relation.isPartOf | MICROPOROUS AND MESOPOROUS MATERIALS | - |
dc.citation.title | MICROPOROUS AND MESOPOROUS MATERIALS | - |
dc.citation.volume | 194 | - |
dc.citation.startPage | 46 | - |
dc.citation.endPage | 51 | - |
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 | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Applied | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | GASIFICATION | - |
dc.subject.keywordPlus | ACTIVATION | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | COAL | - |
dc.subject.keywordAuthor | Multi-walled carbon nanotubes | - |
dc.subject.keywordAuthor | Porosity | - |
dc.subject.keywordAuthor | Transition metal oxide | - |
dc.subject.keywordAuthor | Defect | - |
dc.subject.keywordAuthor | Carbon gasification | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.