Table 1 The MWCNT specimen treated under various H2/O2gas compositions; the characterization results of XPS; and theI D/I Gratio of Raman spectra
Specimen (H2/O2(sccm/sccm)) | XPS | Raman | |||||
|---|---|---|---|---|---|---|---|
sp 2(%) | sp 3(%) | –C–O (%) | –C=O (%) | –COO (%) | [O]/[C]a(%) | (I D /I G ) | |
0/50 | 44.2 | 44.6 | <0.1 | 9.4 | 1.7 | 11.1 | 1.03 |
10/40 | 40.5 | 39.5 | 11.9 | 0.8 | 7.3 | 20 | 1.05 |
25/25 | 42.8 | 26.1 | 13.8 | 17.3 | <0.1 | 31.1 | 1.07 |
40/10 | 36.8 | 49.1 | 0.6 | 0.5 | 12.9 | 14 | 1.27 |
50/0 | 30.8 | 54 | 2.1 | 11 | 2.2 | 15.3 | 1.08 |
Pristine | 48.8 | 40 | 1 | 8.4 | 1.8 | 11.2 | 0.89 |