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N-doped carbon dots sensor for selective detection of hydroxylamine hydrochloride

机译：N掺杂碳点传感器，用于选择性检测盐酸羟胺

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摘要

The preparation of N-doped carbon dots (N-CDs) was facile and efficient by the hydrothermal method, using diethylenetriamine (DETA) and citric acid (CA) as nitrogen source and carbon source, respectively. The fluorescence of N-CDs was effectively quenched by Fe3+. Upon addition of hydroxylamine hydrochloride (HH) to N-CDs/Fe3+ complex dispersion, the fluorescence of N-CDs was significantly recovered. Therefore, we developed an "off-on" fluorescence assay for the detection of HH using N-CDs/Fe3+ as a fluorescence probe. The fluorescence intensity showed linearity with the added HH concentration ranging from 0 to 100 mu M with the detection limit of 0.246 mu M (S/N = 3). The proposed N-CDs sensing showed high selectivity and sensitivity to detection HH in aqueous solution.
机译：通过水热法，分别使用二亚乙基三胺（DETA）和柠檬酸（CA）作为氮源和碳源，制备N掺杂碳点（N-CDs）既简便又高效。 N-CD的荧光被Fe3 +有效淬灭。将盐酸羟胺（HH）添加到N-CDs / Fe3 +络合物分散液中后，N-CDs的荧光得到了显着恢复。因此，我们开发了一种“关闭”荧光测定法，使用N-CDs / Fe3 +作为荧光探针检测HH。荧光强度呈线性关系，添加的HH浓度为0至100μM，检出限为0.246μM（S / N = 3）。拟议的N-CDs传感对水溶液中HH的检测显示出很高的选择性和灵敏度。

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