Surface Modification Effects on CNTs Adsorption of Methylene Blue and Phenol

Table 3

Elemental composition of CNTs.

CNTs	C (wt%)	Fe (wt%)	O (wt%)
CNT-A (as synthesized)	86.87	12.68	0.45
CNT-E (as synthesized)	90.51	8.64	0.85
CNT-A-HM	94.65	5.26	0.09
CNT-A-AM	91.58	5.89	2.53
CNT-E-HM	91.40	8.12	0.48
CNT-E-AM	90.89	6.20	2.91