تخریب فوتوکاتالیستی رنگ‌ آرسنازوIII به وسیله نقاط کوانتومی گرافن تحت نور مرئی





کد مقاله:
JCST-16-10-2016-1681

مولفین:
محمود روشنی: دانشگاه ایلام - شیمی
مهین صادقی: دانشگاه آزاد - واحد ایلام گروه شیمی


چکیده مقاله:

در این مطالعه از نقاط کوانتومی گرافن GQDs به عنوان نانو مواد جدید و بسیار کارآمد برای تخریب رنگ آرسنازو تحت نور مرئی استفاده شده است. سنتز نقاط کوانتومی گرافن با روش پیرولیز انجام شد و جهت بررسی GQDsتهیه شده, از میکروسکوپ الکترونی عبوری TEM و طیف جذبی مرئی- فرابنفش استفاده شد. تاثیر برخی پارامتر‌های تجربی مانند pH محلول رنگ، زمان تماس، غلظت رنگ آرسنازو III و مقدار نقاط کوانتومی بر راندمان تخریب رنگ مورد مطالعه قرار گرفته و بهینه گردید. مدل سنیتیکی برای رنگ‌زدایی آرسنازوIII در حضور نقاط کوانتومی GQDs مورد بحث قرار گرفت و مکانیسم احتمالی تخریب فوتوکاتالیستی تحت نور مرئی بررسی گردید.


Article's English abstract:

The first report of Graphene Quantum Dots GQDs as novel and highly efficient nano materials for degradation of ArsenazoIII dye under visible light, is presented here. Preparation of GQDs was carried out by pyrolyzing method. The transition electron microscopy TEM and UV–Vis spectroscopy were used for characterizing the GQDs. Effect of the experimental parameters such as pH of dye solution, contacting time, concentration of ArsenazoIII dye and amount of GQDs on the degradation efficiency of dye were studied. Finally, the kinetic model for degradation of Arsenazo III in the presence of GQDs was discussed. The possible mechanism of visible light photocatalytic degradation is also proposed.


کلید واژگان:
رنگ آرسنازو (III)، نقاط کوانتومی گرافن، مدل سینیتیکی، تخریب فوتوکاتالیستی

English Keywords:
Arsenazo(III) dye, Graphene Quantum Dots, Kinetic model, Photocatalytic degradation.

منابع:

English References:
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ورود به سامانه نشریه
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صاحب امتياز:
موسسه پژوهشي
علوم و فناوري رنگ و پوشش
مدير مسوول:
پروفسور زهرا رنجبر
سردبير:
پروفسور زهرا رنجبر
مدير اجرايي:
دکتر فرهاد عامري
شاپا چاپي:
8779 - 1735
شاپا الکترونيکي:
2169 - 2383
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تعداد بازدید:345

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