Fluorescence quenchometric method for determination of ferric ion using boron-doped carbon dots

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• 作者：Fengxiang Wang ; Qingli Hao ; Yuehua Zhang ; Yujuan Xu ; Wu Lei
• 关键词：Quenching ; Stern ; Volmer plot ; Heteroatom doping ; Fourier transform infrared spectroscopy ; X ; ray photoelectron spectroscopy ; Transmission electron microscopy
• 刊名：Microchimica Acta
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：183
• 期：1
• 页码：273-279
• 全文大小：1,285 KB
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• 作者单位：Fengxiang Wang (1)
  Qingli Hao (1)
  Yuehua Zhang (1)
  Yujuan Xu (1)
  Wu Lei (1)
  
  1. School of Chemical Engineering, Key Laboratory for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing, 210094, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Inorganic Chemistry
  Physical Chemistry
  Characterization and Evaluation Materials
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Wien
• ISSN：1436-5073

文摘

We report on the hydrothermal synthesis of boron-doped carbon dots (B-CDs) starting from glucose and boric acid. Doping of the CDs with boron was confirmed by Fourier transform infrared and X-ray photoelectron spectroscopy. The B-CDs have an average diameter of about 4 nm and display blue fluorescence which is dynamically quenched by Fe(III) ions. This finding was exploited to design a method for the determination of Fe(III) in water. The relative fluorescence intensity at 359 nm in the presence and of absence ions is inversely proportional to the concentration of Fe(III) ions, and a Stern-Volmer calibration plot is linear in the concentration range of 0–16 μM, with a 242 nM detection limit. The assay is sensitive, robust and selective.