کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7140764 | 1462029 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A reusable P, N-doped carbon quantum dot fluorescent sensor for cobalt ion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A reusable P, N-doped carbon quantum dot fluorescent sensor for cobalt ion A reusable P, N-doped carbon quantum dot fluorescent sensor for cobalt ion](/preview/png/7140764.png)
چکیده انگلیسی
In this work, phosphorus, nitrogen co-doped carbon quantum dots (P,N-CQDs) as highly selective fluorescent probe for cobalt ion (Co2+) detection were designed and synthesized via a one-step hydrothermal protocol by employing pyridoxal 5-phosphate and ethanediamine. This probe enables selective detection of Co2+ with a linear range of 0-60â¯Î¼M and a limit of detection of 0.053â¯Î¼M through variation in fluorescence with respect to target concentration and electron-transfer from P,N-CQDs to Co2+. Furthermore, ethylenediaminetetraacetic acid-modified Fe3O4@SiO2 (Fe3O4@SiO2-EDTA) was tailor-designed and prepared to successfully realize the recovery of P,N-CQDs/Co2+ fluorescence for the first time. The reusable P,N-CQDs as fluorescent sensors for Co2+ also show good linearity and sensitivity. Ultimately, this fluorescent probe was applied in the analysis of real river water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 260, 1 May 2018, Pages 156-164
Journal: Sensors and Actuators B: Chemical - Volume 260, 1 May 2018, Pages 156-164
نویسندگان
Sen Liao, Fawei Zhu, Xinyi Zhao, Hua Yang, Xiaoqing Chen,