High acid-base tolerance and long storage time lanthanum cerium co-doped carbon quantum dots for Fe3+ detection

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2024-11-05 DOI:10.1016/j.saa.2024.125403

Bangxing Li , Fei Wu , Zhenjun Xie , Xing Kang , Yanghua Wang , Wei Li , Xiaolin Hu

引用次数: 0

Abstract

In this paper, lanthanum and cerium co-doped carbon quantum dots (LaCe-CQDs) was firstly synthesized by one step hydrothermal method. The obtained LaCe-CQDs shown sable fluorescence properties with pH values from 3 to 9 and after 4 weeks of storage. The average particle size of LaCe-CQDs, with excitation and emission wavelengths of 350 nm and 446 nm, is 3.27 ± 0.12 nm. Selective analysis of various metal ions revealed the sensitivity of LaCe-CQDs towards Fe³⁺ ions. Within the 0–60 μM, the fluorescence intensity exhibits a strong linear correlation with the concentration of Fe³⁺. The limit of detection (LOD) was determined to be 0.753 μM. Additionally, the accuracy of LaCe-CQDs were demonstrated in natural water samples. Therefore, LaCe-CQDs are a promising sensor for Fe³⁺ detection.

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用于检测 Fe3+ 的高耐酸碱性和长存储时间的镧铈共掺杂碳量子点。

本文首先采用一步水热法合成了镧铈共掺杂碳量子点（LaCe-CQDs）。所获得的 LaCe-CQDs 在 pH 值为 3 至 9 的条件下和储存 4 周后均显示出稳定的荧光特性。LaCe-CQDs 的平均粒径为 3.27 ± 0.12 nm，激发和发射波长分别为 350 nm 和 446 nm。对各种金属离子的选择性分析表明，LaCe-CQDs 对 Fe3+ 离子非常敏感。在 0-60 μM 范围内，荧光强度与 Fe3+ 的浓度呈很强的线性关系。检测限 (LOD) 被确定为 0.753 μM。此外，在天然水样中也证明了 LaCe-CQDs 的准确性。因此，LaCe-CQDs 是一种很有前景的 Fe3+ 检测传感器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.