Synthesis of Ethylene diamine-modified Ordered Mesoporous Carbon as a NewNanoporous Adsorbent for Removal of Cu(II) and Pb(II) Ions from Aqueous Media

The mesoporous carbon (CMK-3) functionalized with ethylenediamine (EDA) has been propered (CMK-3-EDA) and used as a new mesoporous adsorbent for removal of Cu(II) and Pb(II) cations from aqueoussolutions. Nitrogen adsorption–desorption measurements (BET) show that surface area, pore size and porevolume of CMK-3 have significantly changed after amine modification. The BET surface area and porediameter of functionalized product were 344.74 m2 .g−1 and 28.61Å, respectively. The adsorptionconditions including contact time, pH value and adsorbent dosage of the sample solution have beenstudied in batch system and then determined by means of flam atomic absorption spectrometry. Theadsorption capacity was 188.2 mg. g−1 and 196.64 mg. g−1 for Cu(II) and Pb(II) ions, respectively. Theobtained high adsorption capacity of CMK-3 functionalized with EDA is due to the amine functionalgroups formed on the surface of CMK-3 which can react with Pb(II) and Cu(II) ions. Results show that thenew synthesized porous material is a highly effective for sorption of Pb(II) and Cu(II) ions in comparisonto other adsorbents