XPS Characterization Onion-Like Carbon from Nanodiamonds and Carbon Structure from Onion-Like Carbon after High-Pressure High-Temperature Treatment
| Autor: | N. Yu. Shulga, Elena A. Skryleva |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Organic Chemistry Analytical chemistry chemistry.chemical_element Atomic and Molecular Physics and Optics Spectral line Characterization (materials science) Temperature treatment X-ray photoelectron spectroscopy chemistry High pressure General Materials Science Physical and Theoretical Chemistry Carbon Plasmon Line (formation) |
| Zdroj: | Fullerenes, Nanotubes and Carbon Nanostructures. 20:459-462 |
| ISSN: | 1536-4046 1536-383X |
| Popis: | In this work, we report the results of X-ray photoelectron spectroscopy research into the relative concentrations of sp3 and sp2 hybridization type atoms in onion-like carbon (ONC) specimens and in structures synthesized by high pressure and high temperature treatment (HPHT structures). The experimental method was based on the analysis of C1s core line and plasmon loss spectra. ONC specimen graphitization degree was analyzed as a function of treatment temperature for the 1000–1600°C range. Reverse processes, that is, sp3 bond formation, were observed in HPHT structures at 7.7 and 15 GPa and 500–1500°C. |
| Databáze: | OpenAIRE |
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