Indoor formaldehyde removal over CMK-3

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