Mechanochemically Induced sp3-Bond-Associated Reconstruction of Single-Wall Carbon Nanohorns

Single-wall carbon nanohorns (SWCNHs) and partially oxidized SWCNHs (ox-SWCNHs) were mechanochemically treated for the elucidation of their unique chemical bonding state. The mechanochemical treatment promoted the transformation from sp2 to sp3 bonding from XPS, leading to an increase and decrease i...

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Published inJournal of physical chemistry. C Vol. 112; no. 24; pp. 8759 - 8762
Main Authors Urita, Koki, Seki, Shinya, Tsuchiya, Hideyuki, Honda, Hiroaki, Utsumi, Shigenori, Hayakawa, Chiharu, Kanoh, Hirofumi, Ohba, Tomonori, Tanaka, Hideki, Yudasaka, Masako, Iijima, Sumio, Kaneko, Katsumi
Format Journal Article
LanguageEnglish
Published American Chemical Society 19.06.2008
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Summary:Single-wall carbon nanohorns (SWCNHs) and partially oxidized SWCNHs (ox-SWCNHs) were mechanochemically treated for the elucidation of their unique chemical bonding state. The mechanochemical treatment promoted the transformation from sp2 to sp3 bonding from XPS, leading to an increase and decrease in the micropore volume for SWCNHs and ox-SWCNHs, respectively. The changes in the micropore volume and the electrical conductivity responses on CO2 adsorption indicate the occurrence of tubulite-to-tubulite reconstruction in SWCNH through unstable sp3 bonding.
Bibliography:ark:/67375/TPS-757PTGVR-D
istex:93C5F192CB7A6F2F585486A771E2B676184DCD82
(SP1) Intensity ratio of D-band to G-band as a function of the ratio of sp3 to sp2 bonding as determined by XPS analysis. (SP2) Electrical conductivity (σ) of SWCNHs and ox-SWCNHs for the different sp3/sp2 ratios. This material is available free of charge via the Internet at http://pubs.acs.org.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp802276s