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Journal of Nanoparticle Research

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01-02-2017 | Research Paper

Fluorescent carbon dots: facile synthesis at room temperature and its application for Fe²⁺ sensing

Authors: Sai Jin Xiao, Zhao Jun Chu, Jun Zuo, Xiao Jing Zhao, Cheng Zhi Huang, Li Zhang

Published in: Journal of Nanoparticle Research | Issue 2/2017

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Abstract

A new route for one-pot preparation of carbon dots (CDs) was developed at room temperature using PEG400 as both the carbon source and passitive agent. The new method possesses the advantages of facile, rapid, energy-saving, without any external stimulus and environment friendly. By changing the content of NaOH, the PEG400-CDs with blue-emitting, yellow-emitting, orange red-emitting and red-emitting were obtained, and the formation mechanism were carefully investigated. In addition, a sensitive fluorescence sensor were developed for Fe²⁺ detection based on PEG400-CDs since the fluorescence of PEG400-CDs could be enhanced by Fe²⁺. It was found that there is a good linear relationship between the enhanced fluorescence and Fe²⁺ concentration in the range of 0.5 to 2.0 μmol·L⁻¹ with the detection limit of 6.0 × 10⁻⁸ mol·L⁻¹, and Fe²⁺ in water samples was also determined with high accuracy and repeatability.

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Title: Fluorescent carbon dots: facile synthesis at room temperature and its application for Fe2+ sensing
Authors: Sai Jin Xiao
Zhao Jun Chu
Jun Zuo
Xiao Jing Zhao
Cheng Zhi Huang
Li Zhang
Publication date: 01-02-2017
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 2/2017
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-016-3698-1

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