| 羧基化荧光碳量子点的合成及其在汞离子检测中的应用 |
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| 引用本文： | 牛静,王利瑶,杨恩暖,张宁,胡鹏.羧基化荧光碳量子点的合成及其在汞离子检测中的应用[J].化学试剂,2020,42(3):221-225. |
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| 作者姓名： | 牛静 王利瑶 杨恩暖 张宁 胡鹏 |
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| 作者单位： | 黄淮学院化学与制药工程学院,河南驻马店463000;河南黄淮检测科技有限公司,河南驻马店463000 |
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| 基金项目： | 驻马店市科技计划;电分析化学国家重点实验室开放基金;河南省科技攻关计划 |
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| 摘 要： | 通过一步法高压热处理柠檬酸粉末制备了羧基功能化的荧光碳量子点,荧光光谱表征显示所合成荧光碳量子点的最大激发波长为316 nm,最大发射波长为394 nm。Hg^2+对其具有较好的淬灭效果,在5~300μmol/L的浓度范围内,Hg^2+的浓度和体系荧光强度呈较好的线性关系,线性回归方程为F0=152.169 5-0.153 5c,相关系数R2=0.998。这种碳量子点的制备技术将为合成功能化荧光纳米材料提供有益的借鉴作用,并为开发新型传感检测技术提供理论支持。
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| 关 键 词： | 柠檬酸 热处理 荧光 碳量子点 羧基功能化 汞离子检测 |
Synthesis of Carboxylated Fluorescent Carbon Quantum Dots and Application in Mercury Ion Detection |
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| NIU Jing,WANG Li-yao,YANG En-nuan,ZHANG Ning,HU Peng.Synthesis of Carboxylated Fluorescent Carbon Quantum Dots and Application in Mercury Ion Detection[J].Chemical Reagents,2020,42(3):221-225. |
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| Authors: | NIU Jing WANG Li-yao YANG En-nuan ZHANG Ning HU Peng |
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| Affiliation: | (College of Chemistry and Pharmaceutical Engineering,Huanghuai University,Zhumadian 463000,China;Henan Huanghuai Testing Technology Co.,Ltd.,Zhumadian 463000,China) |
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| Abstract: | In this work,carboxyl functionalized fluorescent carbon quantum dots(CQDs) were prepared by one-step high-pressure heat treatment of citric acid powder.The CQDs maximum excitation and emission wavelength were 316 nm and 394 nm,respectively.Hg^2+ had a good quenching effect on its fluorescence.The CQDs fluorescence intensity decreased with the increase of Hg^2+ concentrations and showed a good linear relationship ranging from 5~300 μmol/L.The linear equation for Hg^2+ was F0=152.169 5-0.153 5c and correlation coefficient R2 was 0.998.The preparation methodology for CQDs provided a useful reference for functionalized fluorescent nanomaterials synthesis and lay a foundation for new sensing technology development. |
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| Keywords: | citric acid heat treatment fluorescence carbon quantum dots carboxyl functionalized mercury ion detection |
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