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基于纤维素的黄色-绿色发射碳点与大斯托克斯转移作为有效的"关闭-启动"光平台,用于Cr (VI) 和AA双效检测

Yan-Feng Li¹, Xian Zhang¹, Qian Lu¹

¹School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.

Analytica chimica acta

|September 1, 2024

概括

这项研究引入了新的基于黄色-绿色纤维素的添加碳点 (N-CDs),用于检测六价 (Cr (VI)) 和酸 (AA). 开发的光平台提供了一种灵敏和快速的方法,用于在真实样本中同时检测双效应.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
生物化学生物化学

背景情况:

六价 (Cr (VI)) 是人类致癌物,而酸 (AA) 缺乏会给健康带来风险.
对Cr (VI) 和AA的双效光检测对于健康监测至关重要.
现有的基于纤维素的碳点 (CD) 具有诸如短发射波长和小斯托克斯移动等局限性.

研究的目的:

开发基于纤维素的新碳点 (N-CDs),具有增强的光特性.
建立一个双效果光检测平台,同时检测Cr (VI) 和AA.
为了解决现有的Cr (VI) 和AA检测探针的局限性.

主要方法:

通过一阶段的热水过程合成基于纤维素的N-CDs.
使用内部过效应 (IFE) 构建的光检测平台.
通过AA将Cr (VI) 减少为Cr (III),用于"关闭启动"机制.

主要成果:

开发出具有黄色绿色发射 (ex: 370 nm, em: 510 nm) 的N-CD,具有很大的斯托克斯转移 (140 nm) 和高量子产量 (19.27%).
在0.01-40μM和0.1-100μM范围内同时检测到Cr (VI) 和AA.
在真实水样和低检测极限的新鲜水果中显示出高干扰免疫力 (0.0303μM为Cr (VI),0.072μM为AA).

结论:

这项工作介绍了第一个基于黄色-绿色纤维素的N-CDs,用于Cr (VI) 和AA的双效检测,具有很大的Stokes转移.
开发的光平台提供快速 (<5分钟) 和低体积 (<2毫升) 检测能力.
该方法为在现实应用中对Cr (VI) 和AA进行定量监测提供了一种新的方法.

关键词:

亚斯科布酸是一种亚斯科布酸.碳点是指一个碳点.纤维素乙酸盐的使用情况双重有效性检测检测双重有效性检测六价 (Cr (VI)) 是六价的一种.大型杆转移-转移

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