کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6968624 | 1453010 | 2018 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of carbon dots as efficient catalyst for the green oxidation of phenol: Kinetic study of the degradation and optimization using response surface methodology
ترجمه فارسی عنوان
استفاده از نقاط کربن به عنوان کاتالیزور کارآمد برای اکسیداسیون سبز فنل: مطالعه جنبشی تخریب و بهینه سازی با استفاده از روش سطح پاسخ
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کلمات کلیدی
NCDsHTACCDTerephthalic acid - اسید تترفاتیکFourier transform infrared - تبدیل فوریه مادون قرمزanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceDegradation efficiency - راندمان تخریبResponse surface methodology - روش سطح پاسخRSM - روششناسی سطح پاسخCentral composite design - طراحی مرکب مرکزیFT-IR - طیف سنجی مادون قرمز تبدیل فوریهPhenol - فنل Gum tragacanth - قرص صمغیSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیScanning electron microscopy - میکروسکوپ الکترونی روبشیH2O2 - هیدروژن پراکسیدX-ray diffraction - پراش اشعه ایکسXRD - پراش اشعه ایکس
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
The reactivity of bio-polymer based nano carbon dots (NCDs) was studied for catalyzing the decomposition of H2O2 to generate free hydroxyl radicals and consequently its applicability in the removal of phenol. To the best of our knowledge, for the first time, this work reports that bio-polymer based NCDs could activate H2O2 and yielding more than 99% phenol degradation within 20â¯min in the presence of 12â¯mmol H2O2. Herein, a simple hydrothermal carbonization route was employed for the synthesis of NCDs. The surface morphology, functional groups and crystallinity of the NCDs are studied. SEM images show the NCDs with spherical shape. The graphitic nature of the NCDs was evident from the XRD pattern. The presence of many surface functional groups is confirmed by FT-IR spectra. The influences of three independent operating parameters involving hydrogen peroxide concentration (4-12â¯mmol), reaction time (10-20â¯min) and catalyst amount (50-1000â¯ppm) on the phenol oxidation rate by two NCDs were examined using response surface methodology (RSM). Terephthalic acid (TA) dosimetry demonstrates that the as-prepared NCDs can produce hydroxyl radicals from H2O2, and hence catalyze the oxidation of phenol. Finally, the reusability of the NCDs catalysts was examined and the produced catalysts exhibit good recyclability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 353, 5 July 2018, Pages 444-453
Journal: Journal of Hazardous Materials - Volume 353, 5 July 2018, Pages 444-453
نویسندگان
Meghdad Pirsaheb, Sajad Moradi, Mohsen Shahlaei, Negin Farhadian,