[1]刘华东,徐浩轩,李合伟,等.氮硫掺杂碳量子点荧光探针检测 Fe3+ 和 Hg2+[J].郑州大学学报(工学版),2022,43(06):64-69.[doi:10.13705/j.issn.1671-6833.2022.03.019]
 LIU Huadong,XU Haoxuan,LI Hewei,et al.Detection of Fe3+ and Hg2+ by N and S Doped CDs  Fluorescence Probe[J].Journal of Zhengzhou University (Engineering Science),2022,43(06):64-69.[doi:10.13705/j.issn.1671-6833.2022.03.019]
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氮硫掺杂碳量子点荧光探针检测 Fe3+ 和 Hg2+()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
43
期数:
2022年06期
页码:
64-69
栏目:
出版日期:
2022-09-02

文章信息/Info

Title:
Detection of Fe3+ and Hg2+ by N and S Doped CDs  Fluorescence Probe
作者:
刘华东 徐浩轩 李合伟 王定标
郑州大学机械与动力工程学院;

Author(s):
LIU Huadong XU Haoxuan LI Hewei WANG Dingbiao
School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
关键词:
Keywords:
CDs detection of metal ions fluorescence probe fluorescence quenching selectivity and sensitivity
分类号:
O613. 71;O622. 6
DOI:
10.13705/j.issn.1671-6833.2022.03.019
文献标志码:
A
摘要:
为了实现水溶液中 Fe3+ 和 Hg2+ 的快速简捷检测,以柠檬酸和硫脲为前驱体,采用一步水热法合成硫、氮共掺杂碳量子点荧光探针。通过透射电镜、傅里叶红外光谱、X 射线光电子能谱、荧光分光光度计和紫外-可见吸收光谱分析合成碳点的形貌特征及荧光性能。结果表明:N—S—CDs 的平均粒径为8 nm,分布均匀;表面富有各种官能团,具有良好的水溶性;在紫外灯照射下发出强烈的蓝色荧光,荧光量子产率高达36.8%;随激发波长增大,N—S—CDs 发射峰荧光强度先增大后减小, 在 440 nm 处荧光强度达到最高,并且其 发射峰随着 激发波长发 生明显红移。N—S—CDs 对 Fe3+ 和 Hg2+ 具有较高选择性;Fe3+ 浓度在 40 ~ 130 μmol / L,Hg2+ 浓度 4 0 ~ 80 μmol / L,荧光 强度与 2 种离 子呈良好线性关系,线性回归方程 分别为 F0 / F = 0.021 32cFe3+ + 0.349 45 和 F0 / F = 0.186 11cHg2+ - 6.271 14;最低检出限分别为 1.4、 0.16 μmol / L;将 N—S—CDs 用于自来水和湖水的实样分析,可有效检测自来水和湖水中 Fe3+ 和 Hg2+ 。Fe3+ 的定 量回 收率为 97.16%~103。62%, Hg2+ 的定量 回收率为 93.58%~101。22%。
Abstract:
In order to realize the rapid and simple detection of Fe3+ and Hg2+ in aqueous solution, sulfur and nitrogen co-doped carbon quantum dots fluorescent probes were synthesized by one-step hydrothermal method using citric acid and thiourea as precursors. The morphology and fluorescence properties of the N—S—CDs were analyzed by transmission electron microscope, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, fluorescence spectrophotometer, and ultraviolet-visible absorption spectroscopy. The results showed that the average particle size of N—S—CDs was 8 nm, which was uniformly distributed. The surface was rich in various functional groups and has good water solubility. The strong blue fluorescence was emitted from N—S—CDs under the irradiation of ultraviolet lamp, and the fluorescence quantum yield was as high as 36.8%. With the increase of excitation wavelength, the fluorescence intensity of N—S—CDs emission peak increased at first and then decreased, and the fluorescence intensity reached the highest at 440 nm, and the emission peak was obviously red-shifted with the excitation wavelength. N—S—CDs had high selectivity for Fe3+ and Hg2+. There was a good linear relationship between the fluorescence intensity and the two ions when the concentration of Fe3+ was in the range of 40—130 μmol/L and the concentration of Hg2+ was in the range of 40—80 μmol/L.The linear regression equations are F0/F=0.021 32cFe3++ 0.349 45 and F0/F=0.186 11cHg2+-6.271 14, and the lowest detection limits were 1.4 μmol/L and 0.16 μmol/L, respectively. The application of N—S—CDs to the real sample analysis of tap water and lake water could effectively detect Fe3+ and Hg2+. The quantitative recovery of Fe3+ was between 97.16% and 103.62%, and that of Hg2+ was between 93.58% and 101.22%.

参考文献/References:

[1] 杨智灵.原子吸收法快速测定汽油中的铅、锰和铁 [ J] .郑州大学学报(工学版) , 2013, 34(4) : 107- 109, 114.原子吸收分光光度法快速测定汽油中的铅、锰和铁[J] .郑州大学学报(工学版), 2013, 34(4) : 107-109, 114.

[2] QIE X W, ZAN M H, MIAO P, 等.氮、硫共掺杂碳纳米点的一步合成及其在Fe 3+检测中的应用[J] .材料化学(B), 2018, 6(21) : 3549-3554.
[3] 朱淑军, 孟婷婷, 王璐, 等.用于多色图案、传感器和生物成像的高光致发光碳点[J] .Angewandte chemie ( international ed in english ) , 2013, 52 ( 14 ) : 3953 -3957.
[4] 刘斌, 张勇, 黄志志.用于细胞成像的氮硫掺杂碳点的开发[ J] .药物分析, 2019, 9 (2) : 127-132.
[5] 李庆芝, 周奕华, 陈袁, 等. 比率型碳点荧光传感 器检测机理与应用研究进展[ J] .发光学报, 2020, 41(5) : 579-591.
[6] 马华平, 孙志强, 薛晖, 等.用于荧光油墨、Fe 3+离子检测和细胞成像的简单合成光谱学报A部分:分子与生物分子光谱学, 2019, 213: 281-287 .
[7] 刘国华, 贾华华, 李恩, 等.高荧光碳点(CDs)起源于中国草鱼鳞片(CGCS),用于有效检测Hg(II)离子[J]。微化, 2019, 145: 718-728.
[8] 赖天婷, 郑娥华, 陈丽华, 等.氮掺杂聚合物纳米点的杂化碳源:一锅水热合成、荧光增强和Fe的高选择性检测(III)[J].纳米尺度, 2013, 5(17): 8015-8021.
[9] 闫飞勇, 孔东萍, 罗玉明, 等.碳点可作为汞定量测定和细胞内成像的有效探针 ( II ) [ J ] 。微化学学报, 2016, 183 ( 5 ) : 1611 -1618.
[10] 翟旭, 张萍, 刘淑, 等.微波辅助热解法制备的高发光碳纳米点 [ J ] .化工通讯, 2012, 48 ( 64 ) : 7955-7957.
[11] 郭玉明, 张立芳, 张善善, 等.用于金属离子荧光检测的荧光碳纳米颗粒[J]。生物传感器与生物电子学, 2015, 63: 61-71.
[12] LATIEF U, UL ISLAM S, KHAN Z M S H, et al.功能化碳量子点作为荧光探针的简单绿色合成方法,用于高选择性和灵敏度的Fe 3+离子检测[J] .光谱学报A部分:分子和生物分子光谱学,2021,262:120132.
[13] 李思华, 李永祥, 曹军, 等.硫掺杂石墨烯量子点作为新型荧光探针,用于Fe 3+的高选择性和灵敏度检测[J] .分析化学, 2014, 86(20) : 10201-10207.
[14] 邹文莹, 孔文玲, 赵庆春, 等.一种以溴掺杂碳点和三价铁离子为荧光探针的复合材料,用于磷酸盐的测定和细胞内成像[J] .Mikrochimica 学报, 2019, 186(8) : 576.

更新日期/Last Update: 2022-10-03