Photocatalytic Degradation of 2-Chlorophenol in Water with Direct Solar Light using Pristine and Kaolinite Supported ZnO

الموضوعات

علوم بحتة وطبيعية

الملخص

The photocatalytic degradation of 2-chlorophenol in water under direct sun light was studied using ZnO as semiconductor photocatalyst. Different forms of catalyst were used, namely commercial ZnO, synthetic ZnO and for the first time using composite of ZnO/Kaolinite. These forms were characterized by photoluminescence and UV-visible spectra and the results indicate that the ZnO particles varied in size as: ZnO/Kaolinite < synthetic ZnO < commercial ZnO. The photodegradation of 2-chlorophenol was investigated under different conditions including effect of contaminant concentration, effect of catalyst amount and effect of pH. To study catalyst efficiency, values of overall rate, turnover number (T.N.), turnover frequency (T.F.), degradation percentage and quantum yield (Q.Y.) were all calculated.Under neutral conditions, different ZnO forms catalyzed the photodegradation of 2-chlorophenol in water. The results were compared between ZnO forms, synthetic ZnO showed higher efficiency than commercial ZnO. Commercial ZnO/Kaolinite composite showed higher efficiency than commercial ZnO and synthetic ZnO. The order of efficiency using different form of ZnO system is commercial ZnO< synthetic ZnO< commercial ZnO/Kaolinite. Increasing contaminant concentration, catalyst amount and pH increased photodegradation rates. A mechanism is provided to explain how the photodegradation occurs.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0664c117-19be-4d1b-a609-24875f281186

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

47745_1.pdf

بيانات النشر

ترجمة العنوان

التحطيم الضوئي ل2- كلوروفينول في الماء بوجود الطاقة الشمسية باستخدام اكسيد الزنك الاصلي والمدعم بالكالونايت

ألقاب المؤلفين

[{"name_ar":" عاهد زيود","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"تمارا باسم قاسم زوربا","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"حكمت هلال","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Photocatalytic Degradation of 2-Chlorophenol in Water with Direct Solar Light using Pristine and Kaolinite Supported ZnO

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

عاهد زيود, حكمت هلال

الإعداد

تمارا باسم قاسم زوربا

الاقتباسات الببليوغرافية