Nanostructured CNx (0&lt;x&lt;0.2) films grown by supersonic cluster beam deposition

Bongiorno, G.; Blomqvist, Mats; Piseri, P.; Milani, Paolo; Lenardi, Cristina; Ducati, Caterina; Caruso, T.; Rudolf, Petra; Wachtmeister, Staffan; Csillag, Stefan; Coronel, Ernesto

doi:10.1016/j.carbon.2005.01.022

Cited by 20 publications

(8 citation statements)

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“…4(d)). The binding energy of the N 1s peak at 400.2 eV corresponds to nitrogen atoms bonded to sp 2 carbon, and can be attributed to nitrogen atoms substituting for carbon in the graphene sheets [27]. It should be noted that the expected contribution of carbon-bonded nitrogen species in the C 1s spectra is not more than 2%, which is far below the uncertainty of the fitting procedure (estimated around 10%).…”

Section: Surface Characteristics Of the Few-layer Graphene Sheetsmentioning

confidence: 87%

Microwave synthesis of large few-layer graphene sheets in aqueous solution of ammonia

et al. 2010

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Few-layer graphene (FLG) sheets with sizes exceeding several micrometers have been synthesized by exfoliation of expanded graphite in aqueous solution of ammonia under microwave irradiation, with an overall yield approaching 8 wt.%. Transmission electron microscopy (in bright-field and dark-field modes) together with electron diffraction patterns and atomic force microscopy confirmed that this graphene material consisted mostly of mono-, bi-or few-layer graphene (less than ten layers). The high degree of surface reduction was confirmed by X-ray photoelectron and infrared spectroscopies. In addition, the high stability of the FLG in the liquid medium facilitates the deposition of the graphene material onto several substrates via low-cost solution-phase processing techniques, opening the way to subsequent applications of the material.

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Section: Surface Characteristics Of the Few-layer Graphene Sheetsmentioning

confidence: 87%

Microwave synthesis of large few-layer graphene sheets in aqueous solution of ammonia

et al. 2010

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“…This technique gives information about the way the N and C atoms are bonded in the CNT structure. With EELS, one can get information about the hybridization state of C and N in N-CNTs [ 71 ]. The main features of an EELS spectrum obtained from N-CNT are a prominent peak with a rounded shape at higher energies in the carbon K shell spectrum and a shoulder at 395 eV in the spectrum of the nitrogen K shell [ 45 ].…”

Section: Nitrogen Doped Cnts (N-cnts)mentioning

confidence: 99%

Nitrogen Doped Carbon Nanotubes from Organometallic Compounds: A Review

2010

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Nitrogen doped carbon nanotubes (N-CNTs) have become a topic of increased importance in the study of carbonaceous materials. This arises from the physical and chemical properties that are created when N is embedded in a CNT. These properties include modified chemical reactivity and modified conductivity and mechanical properties. A range of methodologies have been devised to synthesize N-CNTs. One of the procedures uses a floating catalyst in which an organometallic complex is decomposed in the gas phase in the presence of a nitrogen containing reactant to give N-CNTs. Most studies have been limited to ferrocene, ring substituted ferrocene and Fe(CO)5. This review covers the synthesis (and properties) of N-CNTs and other shaped carbon nanomaterials (SCNMs) produced using organometallic complexes. It summarizes the effects that physical parameters such as temperature, pressure, gas flow rates, type and concentration of N source etc. have on the N-CNT type, size and yields as well as the nitrogen content incorporated into the tubes that are produced from organometallic complexes. Proposed growth models for N-CNT synthesis are also reported.

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“…However, the formation of high pure crystalline β-C3N4 is not confirmed yet. In most cases, the grown carbon nitride films were seriously nitrogen deficient compared with stoichiometric β-C 3 N 4 [11][12][13][14][15][16][17][18][19][20]. It is still a challenging topic for preparing carbon nitride films with high crystallinity and high nitrogen content by experimental method.…”

Section: Introductionmentioning

confidence: 99%