| Functionalization of silica particle by amino-terminated dendrimer-like polyamidoamine polymer for adsorption of acid red 1 |
| Paper ID : 1156-UFGNSM-FULL |
| Authors: |
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Samane Goftari1, somaye Akbari *2 1424 Hafez Ave, Tehran, Iran, 15875-4413. 2424 Hafez Ave, Tehran, Iran, 15875-4413 |
| Abstract: |
| The aim of this study was to investigate the influence of surface modification by dendritic grafting of silica gel on their adsorption capacity for Acid red 1 as an anionic textile dye. Abundant surface hydroxyl groups make silica ideally suited for chemical grafting, as a result, these groups can act as a core for dendritic grow on the silica to enhance adsorption capacity. For this purpose, the chemical grafting on silica was first reacted by aminopropyltrimethoxysilane (APTS) to produce silica gel with an amine terminated group, abbreviated by SiO2-G0. In the next step, to produce a half generation in dendritic structure SiO2-G0 was synthesized by methyl acrylate (MA), abbreviated by SiO2-G0.5. Then, SiO2-G0.5 was reacted by ethylenediamine (EDA) to produce SiO2-G1.0. The dendritic structures were grown on the surface of silica in divergent synthetic route from generation zero to second generation. The raw and modified silica particle in various generations was characterized via FTIR and SEM analysis. The results confirm the dendritic structure grow on the silica particle. The adsorption capacity of the raw and modified silica was measured by Acid Red 1. The result was shown that the removal was enhanced from 0 to 88.24 %. It seems that this modification improved significantly the adsorption capacity of this adsorbent. |
| Keywords: |
| Silica, polyamidoamine dendrimer, adsorption capacity, amine terminated group. |
| Status : Paper Accepted (Poster Presentation) |
