Table 2. Comparisons of Carbon Nanospheres with and without Thymol Were Based on Binding Energies and Peak Areas from Deconvolution of the XPS Spectra.
| SiO2@C |
Thy-SiO2@C |
HC |
Thy-HC |
ref | |||||
|---|---|---|---|---|---|---|---|---|---|
| surface species | BE (eV) | area (%) | BE (eV) | area (%) | BE (eV) | area (%) | BE (eV) | area (%) | |
| C 1s | |||||||||
| C–C/C–H | 284.59 | 47.92 | 284.89 | 50.49 | 284.81 | 72.24 | 284.86 | 78.88 | (10,18,26) |
| C–O | 286.18 | 23.66 | 286.79 | 7.79 | 286.32 | 16.57 | 286.47 | 14.66 | (10,18,26) |
| C=O | 288.37 | 15.17 | 289.12 | 29.72 | 288.04 | 6.63 | 288.08 | 5.99 | (10,18,26) |
| C–O–Si/satellite | 291.31 | 13.25 | 291.10 | 12.00 | 289.56 | 4.55 | 289.67 | 4.46 | (27) |
| O 1s | |||||||||
| C=O | 530.93 | 12.74 | 530.95 | 10.12 | 531.80 | 47.40 | 531.82 | 49.97 | (10,26) |
| C–O–C/C–O–H/Si–O–Si | 532.85 | 85.99 | 533.08 | 88.87 | 533.44 | 52.60 | 533.61 | 50.03 | (10,18,26) |
| Si–O–H/adsorbed H2O | 535.38 | 1.27 | 536.32 | 1.01 | nda | nd | nd | nd | (18,26) |
a
nd = Not detectable.