Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 한승우 | - |
dc.date.accessioned | 2018-05-30T08:14:27Z | - |
dc.date.available | 2018-05-30T08:14:27Z | - |
dc.date.issued | 2005 | - |
dc.identifier.issn | 1520-6106 | - |
dc.identifier.other | OAK-2956 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/243651 | - |
dc.description.abstract | Coexistence of metallic and semiconducting carbon nanotubes has often been a bottleneck in many applications and much fundamental research. Single-walled carbon nanotubes (SWCNTs) were dissolved in HNO3/H2SO 4 mixture to confirm differing reactivity between metallic (m) and semiconducting (s) SWCNTs. With HNO3/ H2SO4 treatment, s-SWCNTs remained intact, while m-SWCNTs were completely removed for SWCNTs with small diameters less than 1.1 nm, which was confirmed by resonant Raman and optical absorption spectra. We also showed that nitronium ions (NO2 +) dissolved in the HNO3/H 2SO4 solution could preferably attack the m-SWCNTs, which was supported by our theoretical calculation. This clear selectivity can be explained by the preferential adsorption of positively charged NO 2 + on m-SWCNTs due to more available electron densities at the Fermi level in the m-SWCNTs. We report for the first time a selective removal of small-diameter m-SWCNTs by using HNO3/H2SO 4 solution, which presented a striking contrast to the diameter-selective removal of SWCNTs by oxidative etching reported previously. © 2005 American Chemical Society. | - |
dc.language | English | - |
dc.title | Selective removal of metallic single-walled carbon nanotubes with small diameters by using nitric and sulfuric acids | - |
dc.type | Article | - |
dc.relation.issue | 41 | - |
dc.relation.volume | 109 | - |
dc.relation.index | SCI | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 19242 | - |
dc.relation.lastpage | 19248 | - |
dc.relation.journaltitle | Journal of Physical Chemistry B | - |
dc.identifier.doi | 10.1021/jp053245c | - |
dc.identifier.wosid | WOS:000232612100033 | - |
dc.identifier.scopusid | 2-s2.0-27544469852 | - |
dc.author.google | Yang C.-M. | - |
dc.author.google | Park J.S. | - |
dc.author.google | An K.H. | - |
dc.author.google | Lim S.C. | - |
dc.author.google | Seo K. | - |
dc.author.google | Kim B. | - |
dc.author.google | Park K.A. | - |
dc.author.google | Han S. | - |
dc.author.google | Park C.Y. | - |
dc.author.google | Lee Y.H. | - |
dc.contributor.scopusid | 한승우(55557541900) | - |
dc.date.modifydate | 20211210152321 | - |