چارچوب‌های فلز-آلی در غشاهای کاتالیزگرنوری و چالش‌های آن برای تصفیه آب تحت نور مرئی.
محورهای موضوعی : پليمرها و نانوفناوریزهرا ولی زاده 1 , سید محمد حسینی 2 , وحید صفری فرد 3 *
1 - ایران، تهران، دانشگاه علم و صنعت ایران، دانشکده شیمی
2 - ایران، تهران، دانشگاه علم و صنعت ایران، دانشکده شیمی
3 - ایران، تهران، دانشگاه علم و صنعت ایران، دانشکده شیمی
کلید واژه: چارچوب های فلز-آلی, کاتالیزگر نوری, غشاء, تصفیه آب.,
چکیده مقاله :
چارچوب‌های فلز-آلی (MOF) به‌عنوان موادی با ساختارهای شبکه‌ای متخلخل و خواص شیمیایی قابل تنظیم، امکانات گسترده‌ای را برای فرآیندهای تصفیه آب فراهم می‌آورند. این مواد به‌ویژه تحت تابش نور مرئی، به‌دلیل توانایی‌های منحصر به فردشان در جذب و تبدیل نور به انرژی شیمیایی، می‌توانند به‌طور مؤثری در حذف آلاینده‌ها و تصفیه آب مورد استفاده قرار گیرند. با این حال، مشکل اصلی MOFها در فرم پودر آنها نهفته است که این فرم، کاربرد عملی آنها را محدود می‌کند. به‌ویژه، فرایندهای جداسازی و بازیابی این مواد پودری دشوار و زمان‌بر است. برای رفع این محدودیت‌ها، روش تثبیت MOFها بر روی بسترهای پلیمری به‌عنوان یک راهکار نوآورانه مطرح شده است. این تثبیت به MOFها امکان می‌دهد تا در قالب غشاهای کاتالیزگر نوری استفاده شوند. غشاهای کاتالیزگر نوری حاوی MOF می‌توانند به‌طور مؤثری در فرآیند تصفیه آب به کار گرفته شوند. این غشاها از طریق فرآیندهای کاتالیزگری نوری تحت تابش نور مرئی، توانایی تخریب آلاینده‌های آلی و حذف یون‌های فلزی را دارند. این ویژگی‌ها به‌ویژه در تصفیه آب‌های آلوده به مواد شیمیایی و فلزات سنگین، اهمیت فراوانی دارند.این مطالعه به‌طور جامع به بررسی عملکرد غشاهای کاتالیزگر نوری حاوی MOF در زمینه‌های مختلف تصفیه آب پرداخته است.. تحلیل‌های انجام شده شامل بررسی تأثیرات مختلف بر روی تخریب آلاینده‌های آلی و حذف یون‌های فلزی با استفاده از این غشاها است. به‌ویژه، این تحقیق بر بهینه‌سازی استفاده از انرژی خورشید و افزایش پایداری طولانی‌مدت این غشاها در فرآیندهای جداسازی تمرکز دارد.
As materials with porous network structures and tunable chemical properties, metal-organic frameworks (MOFs) provide a wide range of possibilities for water treatment processes. These materials can be effectively used in the removal of pollutants and water purification, especially under visible light radiation, due to their unique abilities to absorb and convert light into chemical energy. However, the main problem of MOFs lies in their powder form, which limits their practical application. Especially, the separation and recovery processes of these powder materials are difficult and time-consuming. To solve these limitations, the method of stabilizing MOFs on polymer substrates has been proposed as an innovative solution. This immobilization allows MOFs to be used as photocatalyst membranes. Photocatalyst membranes containing MOF can be effectively used in the water purification process. These membranes have the ability to destroy organic pollutants and remove metal ions through photocatalysis processes under visible light irradiation. These features are especially important in the treatment of water contaminated with chemicals and heavy metals. This study has comprehensively investigated the performance of photocatalyst membranes containing MOF in various fields of water treatment. The analyzes carried out include the investigation of different effects on the degradation of organic pollutants and the removal of metal ions using these membranes. In particular, this research focuses on optimizing the use of solar energy and increasing the long-term stability of these membranes in separation processes.
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