Fluorene Functionalized Nanoporous SBA-15 as a Novel Adsorbent for Fast and Efficient Removal of Acid Dyes

SBA-15 grafted with N-(4-(trimethylsilyl) butyl)-9H-fluorene-9-amine was synthesized by a simplestrategy and applied to removal of Acid Red 33 and Acid Black 194 from aqueous solutions. SBA-15 was synthesized and Functionalized according to procedure in the literature. Fluorenefunctionalized SBA-15 was showed the BET surface area 200 m2g-1 and pore diameter 4.2 nm,based on adsorption-desorption of N2 at 77 K. The presence of organic groups in the silicaframework was demonstrated by FTIR and Raman spectrum. The effects of pH, amount ofadsorbent, contact time and dye concentration on adsorption were determined in order to find theoptimum adsorption conditions. The data fitted well to the Langmuir model with maximumadsorption capacities 500.0 mg/g for Acid Red 33 and 110.0 mg/g for Acid Black 194. The resultswere shown that this methodology could be suitable for the removal of the pollutant acid dyes fromdyeing wastewater of handmade carpet’s fibers.