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首页> 外文期刊>RSC Advances >Facile synthesis of N, P-doped carbon dots from maize starch via a solvothermal approach for the highly sensitive detection of Fe3+
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Facile synthesis of N, P-doped carbon dots from maize starch via a solvothermal approach for the highly sensitive detection of Fe3+

机译：通过溶性淀粉从玉米淀粉的碳纤维的合成，通过溶剂检测Fe3 +的高敏感性检测

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摘要

Nitrogen/phosphorus-doped carbon dots (N, P-CDs) with a quantum yield as high as 76.5% were synthesized by carbonizing maize starch via a facile ethanol solvothermal approach. Transmission electron microscopy (TEM) measurement shows that the as-prepared N, P-CDs displayed a quasi-spherical shape with a mean size of ca. 2.5 nm. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy disclosed the presence of –OH, –NH _(2) , –COOH, and –CO functional groups over the surface of N, P-CDs. On the basis of excellent fluorescent properties with strong blue fluorescence emission at 445 nm upon excitation at 340 nm, these N, P-CDs were adopted as a fluorescent probe towards the effective detection of Fe ~(3+) ions in water. The limit of detection (LOD) was as low as 0.1 μmol L ~(?1) and showed a better linear relationship in the range of 0.1 ～ 50 μmol L ~(?1) . In conclusion, these synthesized N, P-CDs can be efficiently used as a promising candidate for the detection of Fe ~(3+) ions in some practical samples.
机译：通过碳化玉米淀粉通过容易的乙醇溶剂热方法合成氮/磷掺杂的碳点（n，p-cds），其高达76.5％。透射电子显微镜（TEM）测量表明，如制备的N，P-CD显示了具有平均大小的准球形形状。 2.5 nm。傅里叶变换红外光谱和X射线光电子能谱公开了N，-NH _（2），-COOH和-CO官能团在N，P-CD的表面上存在的存在。基于优异的荧光特性，在445nm时具有强大的蓝色荧光发射，在340nm的激发时，将这些N，P-Cds作为荧光探针采用，朝向水中的Fe〜（3+）离子的有效检测。检测极限（LOD）低至0.1μmol1〜（α1），并且在0.1〜50μmolL〜（α1）的范围内显示出更好的线性关系。总之，这些合成的N，P-CD可以有效地用作在一些实际样品中检测Fe〜（3+）离子的有希望的候选者。

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