http://www.cnr.it/ontology/cnr/individuo/prodotto/ID170737

Spectroscopic characterization of contaminants and interaction with gases in single-walled carbon nanotubes (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Spectroscopic characterization of contaminants and interaction with gases in single-walled carbon nanotubes (Articolo in rivista) (literal)

Anno

2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.carbon.2004.04.011 (literal)

Alternative label

Goldoni A. (a), Petaccia L. (a), Gregoratti l. (a), Kaulich B. (a), Barinov A. (a), Lizzit S. (a), Laurita A. (b), Sangaletti L. (c), Larciprete R. (a)(d) (2004)
Spectroscopic characterization of contaminants and interaction with gases in single-walled carbon nanotubes
in Carbon; Academic Press Ltd., Elsevier Science Ltd., London (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Goldoni A. (a), Petaccia L. (a), Gregoratti l. (a), Kaulich B. (a), Barinov A. (a), Lizzit S. (a), Laurita A. (b), Sangaletti L. (c), Larciprete R. (a)(d) (literal)

Pagina inizio

2099 (literal)

Pagina fine

2112 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

42 (literal)

Rivista

Carbon (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

fasc. (10). Elsevier. (literal)

Note

ISI Web of Science (WOS) (literal)
Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

(a) Sincrotrone Trieste S.C.p.A., ELETTRA, Trieste, Italy (b) Centro Servizi di Microscopia, Università' della Basilicata, Potenza, Italy (c) INFM-Dipartimento di Matematica e Fisica, Università Cattolica, Brescia, Italy (d) CNR-IMIP, Zona Industriale, Tito Scalo (Pz), Italy (literal)

Titolo

Spectroscopic characterization of contaminants and interaction with gases in single-walled carbon nanotubes (literal)

Abstract

Several previous termspectroscopicnext term techniques have been used to investigate the presence of previous termcontaminantsnext term in a commercial purified previous termsinglenext term-previous termwallednext termprevious termcarbonnext termprevious termnanotubenext term (SWCNT) bucky paper, to determine their cleaning procedure in ultra-high-vacuum conditions and to study how impurities influence the previous terminteractionnext term between SWCNTs and previous termgasnext term phase molecules. Nickel catalyst particles and sodium-containing species, likely a residual of the surfactant bath, were fully removed only after prolonged (>2 h) annealing at 1270 ± 30 K. Other impurity elements (S and Si) remain in the material as localised clusters that do not interact with the SWCNTs and do not interfere with their properties. A dramatic difference was observed when the Na-contaminated or the Na-free previous termnanotubesnext term interacted with molecular oxygen. O2 adsorption was strongly altered by the Na traces, which simulated an intense sample oxidation causing a modification of the tube electronic properties. On the contrary, for the Na-free sample the lack of adsorbed oxygen and the stability of the C1s core level after large O2 doses demonstrated the absence of any chemical bond between SWCNTs and O2. Similarly, exposures to N2, H2O and CO do not have influence on the electronic properties of SWCNTs. Instead, a sizeable effect on the electronic spectra was observed for SO2, NO and NO2 adsorption. The sensitivity of the SWCNT electronic spectra to ppb quantities of nitrogen oxides and sulfur oxide undoubtedly foresees applications in the field of toxic previous termgasnext term sensing. (literal)

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