Table 2

Elemental surface composition of various CMK-3 materials

Sample

Atomic surface concentration obtained by XPS (%)

C

O

N


CMK-3

96.67

2.11

-

CMK-3-H2SO4

97.18

2.82

-

CMK-3-NH3

94.49

1.43

3.66


An et al. Nanoscale Research Letters 2012 7:7   doi:10.1186/1556-276X-7-7

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