Selective cationic dye sorption in water by a two-dimensional zinc-carboxylate coordination polymer and its melamine-formaldehyde foam composite

A new two-dimensional zinc(II) coordination polymer of 5-aminoisophtalic acid (H 2 AIP), namely [Zn(AIP)(DMSO)] n ( Zn-CP ), has been successfully prepared via conventional heating at 100 ?°C in a (2:1) dimethyl sulfoxide/ethanol solvent mixture. The compound characterized by FT-IR spectroscopy, elemental and thermogravimetric analyses, powder single-crystal X-ray diffraction techniques. Crystal structure shows the presence neutral layers composition Zn(AIP) 6 3 -hcb topology, which are decorated only on one side with dangling DMSO molecules. Moreover, composite Zn-CP@Foam also fabricated growing crystals 3D porous melamine-formaldehyde foam (MF) immersion pieces MF precursor solution polymer. Both materials have studied for adsorption water cationic dyes, such as Violet CV Victoria Blue VB ) Malachite Green MG anionic Sunset Yellow SY Congo Red CR Aniline AB ). Results show selective sorption dyes only, faster larger capacity observed material an (102 ?mg ?g ?1 more than twice that found pristine (48 This selectivity towards is attributed to electrostatic interactions between dye molecules negatively charged surface zinc polymer, zeta potential ?13.7 ?mV. adsorbed can be regenerated water/acetic (1:1) reused almost same efficiency. layered Zn-CP) synthesized, characterized, grown fabricate composite. due materials, • 2D zinc-coordination characterized. dyes. highly fabricated. Zn-CP.