عنوان	Investigation of photocatalytic and visible light self-cleaning performance of 2D/2D g-C3N4-ZrO2 based PES/PDA membranes for organic contaminants degradation
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Photocatalytic membrane,2D/2D g-C3N4/ZrO2,Visible light,Self-cleaning,Organic contaminants
چکیده	This study fabricated a novel photocatalytic, self-cleaning membrane by depositing a 2D-2D g-C3N4/ZrO2 photocatalyst on polydopamine-coated polyethersulfone. The morphologies and surface chemistry of the membranes were studied through FESEM-EDX, AFM, and XPS. The results showed the satisfactory binding stability of the photocatalyst on the polyethersulfone/polydopamine. Also, depositing of the photocatalyst on the polyethersulfone/ polydopamine strongly enhanced hydrophilicity. The optimized photocatalytic membrane (39.68 L m2h ) had a substantially higher water flux than polyethersulfone (13.61 L m2h ) and polyethersulfone/polydopamine (19.42 L m2h). The photocatalytic membranes showed high dye removal and protein rejection rates. The flux recovery ratio was 83.32 % after 30 min of visible-light exposure. The conversion of irreversible contaminants into reversible ones under visible-light demonstrated the self-cleaning nature of the membrane. In addition, the photocatalytic membrane showed substantial stability in the vibration and shear force tests. Therefore, the polyethersulfone/polydopamine/(g-C3N4/ZrO2) membrane is a promising candidate for removing organic contaminants from water due to high rejection, water flux rate, and satisfactory stability. This study not only proposed an efficient methodology to fabricate a novel photocatalytic self-cleaning membrane with high stability but also provided further insights into the effects of the 2D structure of photocatalyst on the flux and photocatalytic degradation performance of such membranes.
پژوهشگران	مرجان تنظیفی (نفر اول)، مجید پیروی (نفر دوم)، محسن جهانشاهی (نفر سوم)، سودابه خلیلی (نفر چهارم)