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用于环境样品中氧四环素灵敏检测的荧光氮掺杂碳量子点的绿色制备

Green Preparation of Fluorescent Nitrogen-Doped Carbon Quantum Dots for Sensitive Detection of Oxytetracycline in Environmental Samples.

作者信息

Gao Rong, Wu Zhibin, Wang Li, Liu Jiao, Deng Yijun, Xiao Zhihua, Fang Jun, Liang Yunshan

机构信息

Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.

Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.

出版信息

Nanomaterials (Basel). 2020 Aug 8;10(8):1561. doi: 10.3390/nano10081561.

DOI:10.3390/nano10081561
PMID:32784490
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7466531/
Abstract

Nitrogen-doped carbon quantum dots (N-CQDs) with strong fluorescence were prepared by a one-step hydrothermal method using natural biomass waste. Two efficient fluorescent probes were constructed for selective and sensitive detection of oxytetracycline (OTC). The synthesized N-CQDs were characterized by UV-visible absorption spectra, fluorescence spectra, Fourier transform infrared spectroscopy (FT-IR), X-ray photon spectroscopy (XPS), atomic force microscopy (AFM), and high-resolution transmission electron microscopy (HRTEM), which proved that the synthesized N-CQDs surface were functionalized and had stable fluorescence performance. The basis of N-CQDs detection of OTC was discussed, and various reaction conditions were studied. Under optimized conditions, orange peel carbon quantum dots (ON-CQDs) and watermelon peel carbon quantum dots (WN-CQDs) have a good linear relationship with OTC concentrations in the range of 2-100 µmol L and 0.25-100 µmol L, respectively. ON-CQDs and WN-CQDs were both successfully applied in detecting the OTC in pretreated tap water, lake water, and soil, with the recovery rate at 91.724-103.206%, and the relative standard deviation was less than 5.35%. The results showed that the proposed N-CQDs proved to be green and simple, greatly reducing the detection time for OTC in the determination environment.

摘要

以天然生物质废弃物为原料，通过一步水热法制备了具有强荧光的氮掺杂碳量子点（N-CQDs）。构建了两种高效荧光探针用于选择性和灵敏检测土霉素（OTC）。通过紫外可见吸收光谱、荧光光谱、傅里叶变换红外光谱（FT-IR）、X射线光电子能谱（XPS）、原子力显微镜（AFM）和高分辨率透射电子显微镜（HRTEM）对合成的N-CQDs进行了表征，结果表明合成的N-CQDs表面功能化且具有稳定的荧光性能。探讨了N-CQDs检测OTC的依据，并研究了各种反应条件。在优化条件下，橘皮碳量子点（ON-CQDs）和西瓜皮碳量子点（WN-CQDs）与OTC浓度在2 - 100 µmol/L和0.25 - 100 µmol/L范围内分别具有良好的线性关系。ON-CQDs和WN-CQDs均成功应用于预处理后的自来水、湖水和土壤中OTC的检测，回收率为91.724% - 103.206%，相对标准偏差小于5.35%。结果表明，所提出的N-CQDs方法绿色简便，大大缩短了测定环境中OTC的检测时间。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4a2ffdba9d58/nanomaterials-10-01561-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/5cda334df344/nanomaterials-10-01561-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/b94b046503c7/nanomaterials-10-01561-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/aaca2b87c29a/nanomaterials-10-01561-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4c6d86b50820/nanomaterials-10-01561-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4aa930ff4f3e/nanomaterials-10-01561-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/5e9815cd4486/nanomaterials-10-01561-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/c40424c027e8/nanomaterials-10-01561-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/1a437e487bb7/nanomaterials-10-01561-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4a2ffdba9d58/nanomaterials-10-01561-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/5cda334df344/nanomaterials-10-01561-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/b94b046503c7/nanomaterials-10-01561-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/aaca2b87c29a/nanomaterials-10-01561-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4c6d86b50820/nanomaterials-10-01561-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4aa930ff4f3e/nanomaterials-10-01561-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/5e9815cd4486/nanomaterials-10-01561-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/c40424c027e8/nanomaterials-10-01561-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/1a437e487bb7/nanomaterials-10-01561-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0dce/7466531/4a2ffdba9d58/nanomaterials-10-01561-g009.jpg

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[5]
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[7]
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本文引用的文献

[1]
Occurrence and toxicity of antibiotics in the aquatic environment: A review.

Chemosphere. 2020-3-6

[2]
Green synthesis, biomedical and biotechnological applications of carbon and graphene quantum dots. A review.

Environ Chem Lett. 2020

[3]
Dual-Response Detection of Oxidized Glutathione, Ascorbic Acid, and Cell Imaging Based on pH/Redox Dual-Sensitive Fluorescent Carbon Dots.

ACS Omega. 2020-2-26

[4]
Selective determination of 2,4,6-trinitrophenol by using a novel carbon nanoparticles as a fluorescent probe in real sample.

Anal Bioanal Chem. 2020-5

[5]
Highly sensitive fluorescence sensor for mercury(II) based on boron- and nitrogen-co-doped graphene quantum dots.

J Colloid Interface Sci. 2020-1-30

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Construction of a Tetracycline Degrading Bacterial Consortium and Its Application Evaluation in Laboratory-Scale Soil Remediation.

Microorganisms. 2020-2-20

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Vinyl Phosphate-Functionalized, Magnetic, Molecularly-Imprinted Polymeric Microspheres' Enrichment and Carbon Dots' Fluorescence-Detection of Organophosphorus Pesticide Residues.

Polymers (Basel). 2019-10-27

[9]
Facile Synthesis of Nitrogen-Doped Carbon Quantum Dots with Chitosan for Fluorescent Detection of Fe.

Polymers (Basel). 2019-10-23

[10]
Functionalized Chitosan-Carbon Dots: A Fluorescent Probe for Detecting Trace Amount of Water in Organic Solvents.

ACS Omega. 2019-6-28

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