Table 1

The MWCNT specimen treated under various H2/O2gas compositions; the characterization results of XPS; and theID/IGratio of Raman spectra
Specimen (H2/O2(sccm/sccm)) XPS Raman
sp2(%) sp3(%) –C–O (%) –C=O (%) –COO (%) [O]/[C]a(%) (ID/IG)
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

a[O]/[C]: the ratio of oxygenated groups to the total number of carbon atoms detected

Tseng et al.

Tseng et al. Nanoscale Research Letters 2008 4:234-239   doi:10.1007/s11671-008-9231-4

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