مهندسی شیمی ایران

مهندسی شیمی ایران

حذف سیپروفلوکساسین از آب بااستفاده‌از ایجاد اتصال شاتکی بین نانوذرات بیسموت و مس‌اکسید

نوع مقاله : مقاله پژوهشی

نویسندگان
1 استادیار شیمی معدنی، دانشگاه فرهنگیان
2 دکتری شیمی معدنی، دانشگاه تربیت مدرس
چکیده
در این مطالعه، برای اولین‌بار سنتز و شناسایی مس‌اکسید بهینه‌‌شده‌با نانوذرات فلزی بیسموت به‌منظور دستیابی‌به عملکرد مناسب فوتوکاتالیستی برای تخریب آلایندۀ دارویی سیپروفلوکساسین تحت نور مرئی گزارش‌می‌شود. نتایج نشان‌داد که طراحی به­کاررفته در فرایند بهینه‌سازی بسیار مؤثر بوده و منجربه بیش‌از چهاربرابر بهبود عملکرد فوتوکاتالیستی نسبت‌به مس‌اکسید خالص شده‌است. علت این امر اثر هم‌افزایی بین جذب نور ازراه رزونانس پلاسمون سطحی نانوذرات بیسموت و ایجاد کانال انتقال الکترون در سطح مشترک مس‌اکسید/ بیسموت است، که نتیجۀ آن، افزایش جذب فوتون­های مرئی و کاهش میزان بازترکیب حامل­های بار است. نتایج نشان‌داد که رادیکال سوپر اکسید اصلی‌ترین عامل انجام واکنش اکسایش سیپروفلوکساسین است. توسعۀ فوتوکاتالیست­های جدید مبتنی‌بر نانوذرات دارای اثر رزونانس پلاسمون سطحی چشم انداز جدیدی را برای جایگزینی فلزات نجیب گران­‌قیمت مثل طلا و نقره به‌منظور ازبین‌بردن آلودگی­های آب ارائه‌خواهدداد.
کلیدواژه‌ها

عنوان مقاله English

The Removal of Ciprofloxacin from Water Using the Schottky Junction between Bi Nanoparticles and CuO

نویسندگان English

.A. H Cheshme Khavar 1
.Z Khazaee 2
1 Assistant Professor of Inorganic Chemistry, Farhangian University
2 Ph. D. of Inorganic Chemistry, Tarbiat Modares University
چکیده English

In this study, the synthesis and characterization of copper oxide modified with bismuth nanoparticles in order to achieve a suitable photocatalytic performance for the degradation of the ciprofloxacin under visible light is reported for the first time. The results showed that the optimization process was very efficient and led to about four times improvement in photocatalytic performance compared to bare CuO. This is due to the synergistic effect between light absorption through the surface plasmon resonance of bismuth nanoparticles and the creation of an electron transfer channel at the copper oxide/bismuth interface, which results in an enhance the absorption of visible photons and decrease the rate of recombination of charge carriers. The results indicated the superoxide radical is the main active species in the oxidation reaction of ciprofloxacin. Developing of novel photocatalysts based on nanoparticles with surface plasmon resonance effect will present new insights to replace expensive noble metals such as gold and silver for the removal of water contaminants.

کلیدواژه‌ها English

Photocatalyst
Ciprofloxacin
CuO
Bi Nanoparticles

 

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