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العنوان
Preparation of eco-friendly nanocomposites from nano metal oxides with conducting polymer for enhancing catalytic degradation of petroleum pollutants from industrial wastewater \
المؤلف
Mitwally, Asmaa Ahmed Roshdy.
هيئة الاعداد
باحث / اسماء احمد رشدى متولى
مشرف / مصطفى محمد حسن خليل
مشرف / صلاح عبدالغنى ابوالعنين
مشرف / عبد العزيز مصطفى الفاضلى
تاريخ النشر
2021.
عدد الصفحات
247 p. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
Organic Chemistry
تاريخ الإجازة
1/1/2021
مكان الإجازة
جامعة عين شمس - كلية العلوم - الكيمياء
الفهرس
Only 14 pages are availabe for public view

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Abstract

In this study, novel PANI/WO3,PANI/ZnO, PANI/WO3@ZIF-8, PANI/ZnO@ZIF-8, PANI/WO3@UiO-66-NH2 and PANI/ ZnO @UiO-66-NH2 photocatalysts were successfully synthesized and characterized using XRD, FT-IR, FESEM, TEM, EDX, BET, UV–vis and PL techniques. Under optimal conditions, the photodegradation of 4-nitrophenol (20 mg/L) was examined as a model of petroleum pollutants in heterogeneous systems under visible light irradiation. The prepared nanocomposites showed superior photocatalytic activities toward 4-nitrophenol degradation with visible light irradiation (degradation efficiency~100%). The remarkable improvement of catalytic activity and photostability could be due to the synergetic effect between WO3, ZnO, PANI, and MOFs. Typically, 20 ppm of the 4-NP solution was degraded completely and 95.8% of the carbon content had been mineralized in 180 min at 25 °C using 0.5 g/L of the PANI/WO3@UiO-66-NH2 nanocomposite. Based on the quenching tests, •OH and •O2- were referred to be the main active species. Reusability experiments of photocatalysts demonstrated that the photocatalysts display excellent stability and reusability.