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dc.citation.endPage 256 -
dc.citation.startPage 249 -
dc.citation.title CARBON -
dc.citation.volume 128 -
dc.contributor.author He, Maoshuai -
dc.contributor.author Wang, Xiao -
dc.contributor.author Zhang, Lili -
dc.contributor.author Wu, Qianru -
dc.contributor.author Song, Xiaojie -
dc.contributor.author Chernov, Alexander I. -
dc.contributor.author Fedotov, Pavel V. -
dc.contributor.author Obraztsova, Elena D. -
dc.contributor.author Sainio, Jani -
dc.contributor.author Jiang, Hua -
dc.contributor.author Cui, Hongzhi -
dc.contributor.author Ding, Feng -
dc.contributor.author Kauppinen, Esko -
dc.date.accessioned 2023-12-21T21:08:09Z -
dc.date.available 2023-12-21T21:08:09Z -
dc.date.created 2018-01-12 -
dc.date.issued 2018-03 -
dc.description.abstract The suitability of the Ni-MgO catalyst as a catalyst in chiral-selective growth of single-walled carbon nanotubes (SWNTs) by chemical vapor deposition has been assessed. It reveals that catalyst calcination temperature plays an important role in affecting the catalyst performances. Using CO as the carbon precursor and a chemical vapor deposition reaction temperature of 600 degrees C, Ni-MgO pre-calcined at 600 degrees C demonstrates the best performances in catalyzing the growth of SWNTs with predominant (6, 5) species. Systematic characterizations on catalysts calcinated at different temperatures indicate that Ni2+ ions diffuse towards the interior of MgO matrix upon annealing. DFT-based calculations reveal that the binding energy between Ni2+ and adjacent Ni(0) is larger than that between Mg2+ and Ni (0), while Ni2+ situated deep inside MgO has weak interactions with surface Ni atoms. This work highlights the importance of subsurface Ni2+ in anchoring reduced surface Ni atom, which inhibits the aggregation of Ni particles and therefore, facilitates the growth of SWNTs with a narrow chirality distribution. -
dc.identifier.bibliographicCitation CARBON, v.128, pp.249 - 256 -
dc.identifier.doi 10.1016/j.carbon.2017.11.093 -
dc.identifier.issn 0008-6223 -
dc.identifier.scopusid 2-s2.0-85036461188 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/23213 -
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S0008622317312150?via%3Dihub -
dc.identifier.wosid 000418479900029 -
dc.language 영어 -
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD -
dc.title Anchoring effect of Ni2+ in stabilizing reduced metallic particles for growing single-walled carbon nanotubes -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Materials Science -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Single-walled carbon nanotube -
dc.subject.keywordAuthor Catalyst -
dc.subject.keywordAuthor Chirality selective -
dc.subject.keywordAuthor Reduction temperature -
dc.subject.keywordAuthor Solid solution -
dc.subject.keywordAuthor Anchoring effect -
dc.subject.keywordPlus SELECTIVE GROWTH -
dc.subject.keywordPlus CHIRALITY DISTRIBUTIONS -
dc.subject.keywordPlus BIMETALLIC CATALYST -
dc.subject.keywordPlus XPS SPECTRA -
dc.subject.keywordPlus CO -
dc.subject.keywordPlus SEPARATION -
dc.subject.keywordPlus MO -
dc.subject.keywordPlus NANOPARTICLES -
dc.subject.keywordPlus SPECTROSCOPY -
dc.subject.keywordPlus DIFFRACTION -

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