%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ESR3H2
%@archivingpolicy denypublisher denyfinaldraft24
%X A detailed analysis by X-ray photoelectron spectroscopy was carried out on multi-walled carbon nanotube (MWCNT) surfaces after non-oxidative and oxidative purification treatments in liquid-phase. The MWCNT were produced by pyrolysis of camphor and ferrocene, that provides a high yield but with high iron contamination (similar to 15% wt). The elimination and/or oxidation of iron nanoparticles were monitored by Fe2p and O1s core level. Oxygen-based functional groups attachment was also investigated by C1s fitting. The effectiveness of each treatment in iron removal was evaluated by thermogravimetric analysis (TGA) and atomic absorption spectroscopy (AAS). The integrity of the MWCNT structure was verified by Raman spectroscopy (RS) and transmission electron microscopy (TEM). A purity degree higher than 98% was achieved only with non-oxidative treatments using sonification process.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%8 Nov.
%N 2
%T Evaluation of residual iron in carbon nanotubes purified by acid treatments
%@secondarytype PRE PI
%K Iron purification, XPS, MWCNT, Acid treatment, Camphor, Ferrocene, SINGLE-WALL, RAMAN-SPECTRA, ATMOSPHERIC-PRESSURE, PURIFICATION, XPS, OXIDATION, CAMPHOR, OXYGEN, FUNCTIONALIZATION, DIAMETER.
%@usergroup administrator
%@usergroup marciana
%@group
%@group LAS-CTE-INPE-MCT-BR
%@group
%@group LAS-CTE-INPE-MCT-BR
%@group LAS-CTE-INPE-MCT-BR
%@secondarykey INPE--PRE/
%@issn 0169-4332
%2 sid.inpe.br/mtc-m19/2011/12.06.17.49.56
%@affiliation Sao Paulo State Univ UNESP, BR-12516410 Guaratingueta, SP, Brazil
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Sao Paulo State Univ UNESP, BR-12516410 Guaratingueta, SP, Brazil
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@project CAPES/BRAZIL 0023/08-6  FAPESP/BRAZIL 2006/03525-3
%B Applied Surface Science
%@versiontype publisher
%P 641-648
%4 sid.inpe.br/mtc-m19/2011/12.06.17.49
%@documentstage not transferred
%D 2011
%V 258
%@doi 10.1016/j.apsusc.2011.07.032
%A Edwards, E. R.,
%A Antunes, E. F.,
%A Botelho, E. C.,
%A Baldan, M. R.,
%A Corat, E. J.,
%@dissemination WEBSCI; PORTALCAPES; COMPENDEX.
%@area FISMAT