高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (2): 20250289.doi: 10.7503/cjcu20250289

• 分析化学 • 上一篇    下一篇

Fe-N共掺杂碳量子点作为高活性类过氧化物酶用于绿原酸比色检测

张敏1, 张文皓2, 李光英1(), 王丽敏3, 单桂晔3()   

  1. 1.长春中医药大学附属医院,长春 130021
    2.青岛海关技术中心,青岛 266112
    3.东北师范大学物理学院,长春 130024
  • 收稿日期:2025-10-10 出版日期:2026-02-10 发布日期:2025-11-13
  • 通讯作者: 李光英 E-mail:978399297@qq.com;shangy229@nenu.edu.cn
  • 作者简介:单桂晔, 女, 博士, 教授, 主要从事功能性纳米催化材料合成方面的研究. E-mail: shangy229@nenu.edu.cn
  • 基金资助:
    国家自然科学基金(1257041767);吉林省自然科学基金(20200201582JC)

Fe-N co-Doped Carbon Quantum Dots as Highly Active Peroxidase Mimics for Colorimetric Detection of Chlorogenic Acid

ZHANG Min1, ZHANG Wenhao2, LI Guangying1(), WANG Limin3, SHAN Guiye3()   

  1. 1.The Affiliated Hospital of Changchun University of Chinese Medicine,Changchun 130021,China
    2.Technology Center of Qingdao Customs,Qingdao 266112,China
    3.School of Physics,Northeast Normal University,Changchun 130024,China
  • Received:2025-10-10 Online:2026-02-10 Published:2025-11-13
  • Contact: LI Guangying E-mail:978399297@qq.com;shangy229@nenu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(1257041767);the Natural Science Foundation of Jilin Province, China(20200201582JC)

摘要:

L-组氨酸和七水合硫酸亚铁为前驱体, 通过一步水热法合成了具有类过氧化物酶活性的铁、 氮共掺杂碳量子点(Fe-N-CDs). Fe的掺杂为CDs引入了丰富的活性位点, 增强了CDs的电子转移能力与催化效率. Fe-N-CDs能有效催化过氧化氢(H2O2)分解产生羟基自由基(·OH), 进而氧化3,3',5,5'-四甲基联苯胺(TMB)生成在652 nm处有特征吸收的蓝色产物(oxTMB). 绿原酸(CGA)作为一种天然多酚类化合物, 广泛存在于植物中, 具有良好的抗氧化性能及抗抑郁作用. 本文利用CGA可还原oxTMB使其褪色的性质, 建立了吸光度变化值与CGA含量间的定量关系, 从而构建了一种用于检测CGA的比色传感平台. 实验结果表明, 该方法具有良好的选择性、 抗干扰能力与快速响应特性, 可用于药物及食品中抗氧化成分的比色分析, 为相关产品的质量评估与抗抑郁药物开发提供了新的分析手段.

关键词: 碳点, 纳米酶, 绿原酸, 比色检测

Abstract:

Fe-N-CDs nanopaticles were successfully prepared by one-step hydrothermal method using L-histidine and Fersulfate heptahydrate(FeSO₄·7H₂O) as precursors. The introduction of Fe atoms produced more active sites on the surface of carbon dots, promoted the electron transfer in the catalytic process, and thus improved the catalytic efficiency of the material. The Fe-N-CDs nanopaticles effectively catalyzed the decomposition of hydrogen peroxide (H2O2) to generate hydroxyl radicals(•OH), which subsequently oxidized 3,3',5,5'-tetramethylbenzidine(TMB) to form a blue oxidation product(oxTMB) with a characteristic absorption peak at 652 nm. Curcumin, a natural polyphenolic compound widely found in plants, exhibits excellent antioxidant properties and antidepressant effects. Leveraging the ability of curcumin to reduce oxTMB and cause its color to fade, a quantitative relationship between the change in absorbance and the curcumin content was established. This enabled the development of a colorimetric sensing method for the detection of curcumin. The experimental results demonstrated that this method possesses good selectivity, anti-interference capability and rapid response characteristics. It can be applied for the colorimetric analysis of antioxidant components in pharmaceuticals and food products, offering a new analytical approach for quality assessment of related products and the development of antidepressant drugs.

Key words: Carbon dots, Naoeezymes, Chlorogenic acid, Colorimetric detection

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