Abstract
Porous aromatic frameworks (PAFs) display high potential for wastewater treatment, due to their high surface area and extreme stability. PAF-134 was synthesized based on a 3-connected non-planar building unit, tris(4-bromophenyl)(phenyl)silane (PBTSi-3-Br), via Yamamoto coupling reaction. PAF-134 exhibited high BET surface area of 865.7 m2/g, large mesopore ratio of 69 % pore volume and excellent stability. Three tetracycline pollutants, tetracycline (TC), oxytetracycline (OTC) and chlortetracycline hydrochloride (CTC), were chosen to study the antibiotics adsorption performance for PAF-134. The adsorption isotherms, kinetics, and thermodynamics were measured and analyzed. Moreover, PAF-134 in removing antibiotics from actual water exhibited high efficiency and possessed outstanding recyclability and stability, thus showing that it is a promising adsorbent for wastewater treatment.
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