Akademik Veri Yönetim Sistemi
Materials Today Communications, cilt.36, 2023 (SCI-Expanded)
Recently, hydrogels containing bio-based building blocks have become very common as adsorbents for toxic dye removal. Herein, we prepared gelatin-containing semi-IPN hydrogels that contain different amounts of itaconic acid-based protic ionic liquids (PILs). We then used these hydrogels for the removal of two different anionic textile dyes (Reactive Red 21 and Reactive Blue 19). The synthesized PIL was characterized by 1H NMR and the hydrogels were characterized by FTIR spectroscopy. The hydrogels displayed up to 670 % swelling in water depending on their compositions. The hydrogels containing none or lower amounts of PIL were found to display maximum adsorption capacities under acidic conditions within 120 min. When the concentration of the PIL within the hydrogels was over a certain value, the adsorption became almost independent of pH. The adsorption behavior was found to well correlate with the Langmuir isotherm and the Gibbs free energy change values for the adsorption were calculated to be negative, meaning that the adsorption of both dyes at room temperature occurs spontaneously. The best-performing hydrogel composition was tested in real wastewater samples without any pH adjustments and over 75 % removal efficiency was obtained.