کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399663 | 1505907 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemiluminescence of graphene quantum dots and its application to the determination of uric acid
ترجمه فارسی عنوان
شیمی معکوس نقاط کوانتومی گرافن و کاربرد آن در تعیین اسید اوریک
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کلمات کلیدی
نقاط کوانتومی گرافن، شیمی معدنی، اسید اوریک، نانومواد،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
We report on the chemiluminescence (CL) of graphene quantum dots (GQDs) induced by direct chemical oxidation. GQDs were prepared by a simple carbonization method and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and Raman spectroscopy. It was found that Ce(IV) could oxidize GQDs to produce a relatively intense CL emission. The mechanism of CL generation was investigated based on the fluorescence and CL emission spectra. It was attributed to the radiative recombination of oxidant-injected holes and thermally excited electrons in the GQDs. In order to show the analytical application potential of GQDs-Ce(IV) CL system, it was applied to the determination of uric acid. Under the optimized conditions, the proposed CL system exhibited excellent analytical performance for determination of uric acid in the range of 1.0Ã10â6Â M-5.0Ã10â4Â M with a limit of detection of 5.0Ã10â7Â M. The method was applied to the determination of uric acid in human plasma and urine samples, with satisfactory results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 153, September 2014, Pages 73-78
Journal: Journal of Luminescence - Volume 153, September 2014, Pages 73-78
نویسندگان
Mohammad Amjadi, Jamshid L. Manzoori, Tooba Hallaj,