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祝艳, 鲁应光, 母昭, 杨亚玲. 硅掺杂碳点荧光猝灭法检测废水中钴离子[J]. 环境化学, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
引用本文: 祝艳, 鲁应光, 母昭, 杨亚玲. 硅掺杂碳点荧光猝灭法检测废水中钴离子[J]. 环境化学, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
shu
ZHU Yan, LU Yingguang, MU Zhao, YANG Yaling. Determination of cobalt by silicon doped carbon dots fluorescence spectrophotometer[J]. Environmental Chemistry, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
Citation: ZHU Yan, LU Yingguang, MU Zhao, YANG Yaling. Determination of cobalt by silicon doped carbon dots fluorescence spectrophotometer[J]. Environmental Chemistry, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
shu

硅掺杂碳点荧光猝灭法检测废水中钴离子

  • 1. 昆明市环境监测中心, 昆明, 650028;

  • 2. 云南健牛生物科技有限公司, 昆明, 650033;

  • 3. 昆明理工大学生命科学与技术学院, 昆明, 650500

    • 通讯作者: 杨亚玲, E-mail: yilyil8@163.com

Determination of cobalt by silicon doped carbon dots fluorescence spectrophotometer

  • 1. Central monitoring center of Kunming City, Kunming, 650028, China;

  • 2. Yunnan Jianniu Bio Technology Co., Ltd, Kunming, 650033, China;

  • 3. Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China

    • Corresponding author: YANG Yaling, yilyil8@163.com

  • 摘要: 以二乙烯三胺基丙基三甲氧基硅烷与甘油混合前驱物，采用水热一步法合成高荧光产率（25%）硅掺杂碳点（Si-CDs），通过透射电镜（TEM）、X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）对Si-CDs进行了表征，通过荧光光谱、紫外可见光谱对Si-CDs光学性能进行研究.基于Co2+对Si-CDs荧光猝灭效应，将其作为荧光探针检测Co2+，在Co2+浓度为0.1—50 μmol·L-1范围内Si-CDs的荧光猝灭强度与其浓度呈现良好的线性关系，相关系数为0.9915，检出限为74 nmol·L-1.方法用于环境水样中Co2+测定，回收率在97.18%—102.3%.
    Abstract: A method for preparation of the silicon doped carbon dots (Si-CDs) was established via hydrothermal method by using diethylenetriaminopropyltrimethylsilane and glycerin as precursors. The as-prepared Si-CDs were characterized by transmission electron microscopy (TEM), X Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), fluorescence spectrophotometer and UV-vis absorption spectra. The detection of cobalt(Ⅱ) ion(Co2+) was set up based on the fluorescence quenching of Si-CDs. A good linear range from 0.1-50 μmol·L-1 was obtained between fluorescence quenching and concentration of Co2+ with detection limit of 74 nmol·L-1,and the correlation coefficient was 0. 9915. Finally, this method was applied in the analysis of waste water samples with the recoveries of 97.18%—102. 3%.
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  • 收稿日期:  2019-09-17
祝艳, 鲁应光, 母昭, 杨亚玲. 硅掺杂碳点荧光猝灭法检测废水中钴离子[J]. 环境化学, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
引用本文: 祝艳, 鲁应光, 母昭, 杨亚玲. 硅掺杂碳点荧光猝灭法检测废水中钴离子[J]. 环境化学, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
shu
ZHU Yan, LU Yingguang, MU Zhao, YANG Yaling. Determination of cobalt by silicon doped carbon dots fluorescence spectrophotometer[J]. Environmental Chemistry, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
Citation: ZHU Yan, LU Yingguang, MU Zhao, YANG Yaling. Determination of cobalt by silicon doped carbon dots fluorescence spectrophotometer[J]. Environmental Chemistry, 2020, (12): 3517-3523. doi: 10.7524/j.issn.0254-6108.2019091701
shu

硅掺杂碳点荧光猝灭法检测废水中钴离子

    通讯作者: 杨亚玲, E-mail: yilyil8@163.com
  • 1. 昆明市环境监测中心, 昆明, 650028;
  • 2. 云南健牛生物科技有限公司, 昆明, 650033;
  • 3. 昆明理工大学生命科学与技术学院, 昆明, 650500
  • 收稿日期:  2019-09-17

摘要: 以二乙烯三胺基丙基三甲氧基硅烷与甘油混合前驱物，采用水热一步法合成高荧光产率（25%）硅掺杂碳点（Si-CDs），通过透射电镜（TEM）、X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）对Si-CDs进行了表征，通过荧光光谱、紫外可见光谱对Si-CDs光学性能进行研究.基于Co2+对Si-CDs荧光猝灭效应，将其作为荧光探针检测Co2+，在Co2+浓度为0.1—50 μmol·L-1范围内Si-CDs的荧光猝灭强度与其浓度呈现良好的线性关系，相关系数为0.9915，检出限为74 nmol·L-1.方法用于环境水样中Co2+测定，回收率在97.18%—102.3%.

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