State of C-atoms on the modified nanodiamond surface

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• 作者：А ; . Dementjev ; K. Maslakov ; I. Kulakova ; V. Korolkov ; V. Dolmatov
• 关键词：Nanodiamond ; Surface chemistry ; X-ray photoelectron spectroscopy ; Auger spectroscopy ; Electron energy loss spectroscopy ; FTIR spectroscopy
• 刊名：Diamond and Related Materials
• 出版年：2007
• 出版时间：December 2007
• 年：2007
• 卷：16
• 期：12
• 页码：2083-2086
• 全文大小：602 K

文摘

XPS, EEL, Auger and FTIR spectroscopies were used to testify the influence of chemical treatment upon the state of C-atoms in the core and on the surface of nanodiamond particles. The study was carried out with ND (JSC “Diamond Centre”). The different kinds of treatments were done ex-situ: with air (5 h) at 200 and 400 °C; with hydrogen (5 h) at 800, 850 and 900 °C; with fluorine (48 h) at 20 °C and 0.5 atm. Noticeable change was not found in the state of C-atoms both on the surface and up to 10 monolayers after these treatments. The concentration of F in the sample is equal to 9 at. % . The binding energy of the F 1s differs from the one in functional groups— –CF₂, –CF. Nevertheless FTIR spectra show bands that can be related to С–О, С–F bonds.