Surface Modification of Porous Silica with Bi-thiophene Tripodal Ligand and Aplication to Adsorption of Toxic Metal Cations |
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| Authors: | Smaail Radi Ahmed Attayibat Abdelkrim Ramdani Maryse Bacquet |
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| Affiliation: | 1. Laboratoire de Chimie Organique, Macromoléculaire et Produits Naturels, Département de Chimie, Faculté des Sciences , Université Med 1 , Oujda, Morocco;2. Laboratoire de Chimie Macromoléculaire, Université des Sciences et Technologies de Lille , Villeneuve d’Ascq, France |
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| Abstract: | The immobilization of a thiophene-based tripodal ligand, with a donor sulfur, on the surface of an epoxide group containing a silica gel phase for the synthesis of a newly functionalized material based on porous silica-bound bi-thiophene tripodal ligand (SGBT) is described. The modified silica surface was characterized by 13C NMR of a solid sample, elemental analysis, and infrared spectra. This new material was also studied and evaluated by determination of the surface area using the BET equation, the adsorption and desorption capability using the isotherm of nitrogen and BJH pore sizes, respectively. The target material exhibits good thermal stability as determined by thermogravimetry curves. The synthesized material was utilized in column and batch methods for adsorption of Hg2+, Cd2+, Pb2+, Cu2+, Zn2+, K+, Na+, and Li+, and the material exhibits an affinity only towards toxic heavy metals. |
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| Keywords: | Adsorption chemical synthesis metals silica modification thiophene |
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