Green preparation of nitrogen doped carbon quantum dot films as fluorescent probes

文献类型： 外文期刊

第一作者： He, Yanfei

作者： He, Yanfei;Liang, Lina;Liu, Qinghao;Liang, Dong;Guo, Jinchun;Liu, Hongyan

作者机构：

期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）

ISSN： 2046-2069

年卷期： 2017 年 7 卷 88 期

页码：

收录情况： SCI

摘要： To prepare nitrogen doped carbon dots (NCDs) with excellent luminescence efficiency, a facile hydrothermal method was developed using cabbage juice as the carbon source and poly ethylene polyamine (PP) as the nitrogen source. Then, as-prepared NCDs were grafted onto calcium alginate to produce calcium alginate film (CA-NCDs), and the CA-NCDs were used as a fluorescent probe. The significant quenching effect of Fe3+ was established. The ratio of fluorescence intensity (F/F-0) of the CA-NCDs had a linear relationship with the concentration of Fe3+ within the range of 0 to 48 mM (R-2 was 0.9947) and the detection limit was 1.4 nM. In addition, the recovery of spiked samples ranged from 98.6% to 103.1%. Most importantly, the amino-functionalized CA-NCD fluorescent probe can be successfully applied for the detection of trace Fe3+ in water samples.

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