کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5434231 1509140 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient synthesis of highly fluorescent carbon dots by microreactor method and their application in Fe3 + ion detection
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Efficient synthesis of highly fluorescent carbon dots by microreactor method and their application in Fe3 + ion detection
چکیده انگلیسی


- A rapid, continuous carbon dots synthesis technique was proposed by using a microreactor method.
- The CDs can be synthesized at a large scale in less than 5 min, and a high quantum yield of 60.1% was achieved.
- A powerful and portable tool for the rapid and efficient online synthesis of CDs was developed.
- The fluorescence probe shows high sensitivity and selectivity for Fe3 + detection.

Rapidly obtaining strong photoluminescence (PL) of carbon dots with high stability is crucial in all practical applications of carbon dots, such as cell imaging and biological detection. In this study, we proposed a rapid, continuous carbon dots synthesis technique by using a microreactor method. By taking advantage of the microreactor, we were able to rapidly synthesized CDs at a large scale in less than 5 min, and a high quantum yield of 60.1% was achieved. This method is faster and more efficient than most of the previously reported methods. To explore the relationship between the microreactor structure and CDs PL properties, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were carried out. The results show the surface functional groups and element contents influence the PL emission. Subsequent ion detection experiments indicated that CDs are very suitable for use as nanoprobes for Fe3 + ion detection, and the lowest detection limit for Fe3 + is 0.239 μM, which is superior to many other research studies. This rapid and simple synthesis method will not only aid the development of the quantum dots industrialization but also provide a powerful and portable tool for the rapid and continuous online synthesis of quantum dots supporting their application in cell imaging and safety detection.

Microreactor method is faster and more efficient than most of the previously reported methods synthesize carbon dots.207

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 81, 1 December 2017, Pages 213-223
نویسندگان
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