چكيده به لاتين
One of the most fundamental challenges confronting humans in the new era is the crisis of water contamination caused by industrial pollutants such as heavy metals. One of the most appealing techniques is the removal of these contaminants via membrane approaches. In this research, porous carbonitride nanostructures are synthesized due to their chemical flexibility, inherent porous properties, excellent durability, and Modifiability. The prepared nanoparticles were reacted with (3-methacryloxypropyl)trimethoxysilane (Γ-MPS) and (3-Aminopropyl)triethoxysilane (APTMS) for the synthesis of the polymer-grafted-C3N4 nanoparticles, which were further coated by poly(Acrylic Acid - 1-vinylpyrrolidone) under radical polymerization. The formation and structure of polymer grafted carbonitride are proved by FT-IR, TGA, and FE-SEM. Purpose of providing selectivity and hydrophilicity to the hydrophobic PES membrane, ultrafiltration membrane was fabricated from a mixture of PES and Poly(AA-VP)-g-C3N4 using a phase inversion process, and their performance on Cd+2 removal and also thermal resistance, swelling, Tensile strength, solvent uptake, water flux, rejection, contact angels, and surface morphology were all investigated as membrane physical properties. After adding the as-prepared core-shell block co-polymer grafted nanoparticles the modified membranes showed higher hydrophilicity, rejection, swelling, water flux, and porous structure. For example, the membrane rejection ratio increased 3.9 times after correction. On the other hand, the contact angle decreased to 35 degrees, which indicates an increase in hydrophilicity.
