سنتز نانوکامپوزیت ZnO/SnO2 بارگذاری شده با نقره به روش تلقیح مایع و بررسی فعالیت نوری آن در حذف یک آلاینده محیط زیست تحت تابش نور مرئی
الموضوعات :
لیلا آیرملو
1
(دانشگاه آزاد اراک)
الکلمات المفتاحية: ZnO/SnO2, Ag-ZnO/SnO2, هم‌رسوبی, تلقیح مایع, فعاليت فوتوكاتاليزوري, اسید قرمز 27,
ملخص المقالة :
در این تحقیق ابتدا نانوکامپوزیت ZnO/SnO2 به روش هم‌رسوبی سنتز شده، سپس نقره با درصدهای مختلف به روش تلقیح مایع بر روی نانوکامپوزیت بارگذاری شده است. فعاليت فوتوكاتاليزوري مواد سنتز شده در حذف يك آلاینده رنگزا (اسید قرمز 27) تحت نور مرئي مورد ارزيابي قرار گرفته است. مشخصه‌یابی مواد با استفاده از روش‌های XRD و SEM-EDX انجام گرفته است. با استفاده از آنالیزهای مذکور اندازه ذرات، فازهای تشکیل دهنده و همچنین مورفولوژی ذرات بدست آمده است. نتایج فعاليت فوتوكاتاليزوري نشان مي‌دهد كه نانوکامپوزیت Ag-ZnO/SnO2 فعاليت بیشتری نسبت به نانوکامپوزیت ZnO/SnO2 در حذف اسید قرمز 27 (AR27) را دارد. بیشترین فعاليت فوتوكاتاليزوري مربوط به نانوکامپوزیت Ag-ZnO/SnO2 با %5 وزنی نقره و دمای کلسیناسیون oC500 می‌باشد بطوریکه درصد حذف AR27 تحت تابش نور مرئي به مدت 50 دقيقه %95 می‌باشد.
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