Research on iron removal on carbon nanotube materials synthesized by the CVD method using 2,4-D adsorption in aqueous solution

In this study, the technique of oxidation in air and treatment with HCl was chosen to remove iron in carbon nanotube materials synthesized by the CVD method to apply 2,4-D adsorption in aqueous solution at initial concentration 52.2 mg/L. The oxidation process was repeated twice at 440 ˚C for 4 hours and 40 minutes, respectively. XRD, TEM, BET, AAS, HPLC analysis methods have shown that the MWCNTs tube tips are open and not shortened, can handle 94.42 % Fe, removing Fe has increased the surface area. BET alone increased from 170 to 262 m2/g and pore volume increased from 0.897 to 1.402 cm3/g, increasing the adsorption capacity of the material from 64.39 to 80.16 %.