Green one-step synthesis of boron and nitrogen co-doped carbon dots based on inner filter effect as fluorescent nanosensors for determination of Fe3+

Jing Xu, Yue Guo, Linjun Qin, Xiaoyu Yue, Qitu Zhang, Lixi Wang

科研成果: 期刊稿件文章同行评审

24 引用 (Scopus)

摘要

Significant efforts need to be devoted to enhancing the photoluminescence quantum yields (PLQY) of carbon dots (CDs) due to the typically low PLQY (< 10%) of currently synthesized CDs. Moreover, certain special industries such as textiles, paper, and food all have high requirements for water since Fe3+ can affect its color, odor, and taste. The traditional detection methods require expensive equipment, so a facile method to detect Fe3+ is urgently needed. In this work, the self-doping of nitrogen (N-CDs) has been achieved through tea residues as the carbon source to inhibit the oxygen-deficient state, and the doping of boric acid (BN-CDs) can activate the electron transition at the carbon site, which effectively enhanced the PLQY of CDs from 11.4% to 25.79% compared to N-CDs. Furthermore, as hydroxylated polyphenols in tea residues can adsorb metal ions, stable non-fluorescent matrix state complexes have been established between BN-CDs and Fe3+ to quench the FL owing to the inner filter effect. The linear relationship was formed in the concentration range of 0–60 μM, and the detection limit reached 0.07 μM. It demonstrates that along with the effective treatment of waste tea residues, the synthesized high fluorescence property BN-CDs are suitable to detect Fe3+ in water for textiles, paper, food, and other special industries.

源语言英语
页(从-至)7546-7555
页数10
期刊Ceramics International
49
5
DOI
出版状态已出版 - 1 3月 2023

指纹

探究 'Green one-step synthesis of boron and nitrogen co-doped carbon dots based on inner filter effect as fluorescent nanosensors for determination of Fe3+' 的科研主题。它们共同构成独一无二的指纹。

引用此