Issue 38, 2016
From the journal:

RSC Advances

Highly photoluminescent nitrogen-rich carbon dots from melamine and citric acid for the selective detection of iron(iii) ion†

Shaoqing Liu,a   Ruili Liu,*b   Xia Xing,a   Chongqing Yang,c   Yi Xua  and  Dongqing Wu*c  

* Corresponding authors

a Department of Chemical Engineering, School of Environment and Chemical Engineering, Shanghai University, Shanghai 200444, China

b Department of Electronic Engineering, National Engineering Lab for TFT-LCD Materials and Technologies, Shanghai Jiao Tong University, Shanghai 200240, China
E-mail: ruililiu@sjtu.edu.cn

c School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
E-mail: wudongqing@sjtu.edu.cn

Abstract

A facile one-step hydrothermal strategy to fabricate nitrogen-rich carbon dots (N-rich CDs) with melamine and citric acid as the precursors has been successfully developed. The as-prepared N-rich CDs exhibit a uniform quasi-spherical morphology, high N content of about 24 wt% and very strong photoluminescence (PL) with a high quantum yield of ∼42%. Additionally, the PL emission of these N-rich CDs can be stabilized in a wide pH range from 4.0 to 11.0. More importantly, the N-rich CDs can be utilized as the label-free PL sensors for the highly selective and sensitive detection of Fe3+ ions in aqueous solution with a very low detection limit of 142 nM.

Graphical abstract: Highly photoluminescent nitrogen-rich carbon dots from melamine and citric acid for the selective detection of iron(iii) ion

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Article information

DOI
https://doi.org/10.1039/C5RA26521E
Article type
Paper
Submitted
12 Dec 2015
Accepted
20 Mar 2016
First published
22 Mar 2016

RSC Adv., 2016,6, 31884-31888

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Highly photoluminescent nitrogen-rich carbon dots from melamine and citric acid for the selective detection of iron(III) ion

S. Liu, R. Liu, X. Xing, C. Yang, Y. Xu and D. Wu, RSC Adv., 2016, 6, 31884 DOI: 10.1039/C5RA26521E

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