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首页> 外文期刊>Applied Surface Science >Ethylenediamine-assisted hydrothermal method to fabricate MoS_2 quantum dots in aqueous solution as a fluorescent probe for Fe~(3+) ion detection
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Ethylenediamine-assisted hydrothermal method to fabricate MoS_2 quantum dots in aqueous solution as a fluorescent probe for Fe~(3+) ion detection

机译：乙二胺辅助水热法在水溶液中制造MOS_2量子点作为Fe〜（3+）离子检测的荧光探针

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摘要

Molybdenum disulfide (MoS2) quantum dots (QDs) with unique fluorescence (FL) properties are extensively used for sensors, photoelectrochemical devices, energy storage, and hydrogen evolution. The sufficient demand to develop green and environmentally friendly methods has led to the popularization of MoS2 QD preparation. Here, we provided a proper way to prepare MoS2 QDs by virtue of the ethylenediamine (EN)-assisted exfoliation of MoS2 bulk powder. The whole synthesis process was free of high-toxic agents and carried out in an aqueous solution. The resultant MoS2 QDs presented good dispersion in the aqueous solution and the blue emission at 427 nm. The FL quantum yield of 19% in this work was higher than the yields of most reported MoS2 QDs prepared from their bulk powders. EN was successfully bound to the Mo atom based on the XPS analysis, and the entire S atom was at an oxidation state. Meanwhile, the as-prepared MoS2 QDs possessed high-performance airstable properties and thus proved to be an effective fluorescent probe for detecting Fe3+ ions with excellent sensitivity, selectivity, and fast response. The limit detection was calculated to be 0.4 mu mol/L. The resultant MoS2 QDs can be regarded a potential candidate of fluorescent probe for Fe3+ detection.
机译：具有独特荧光（FL）性能的二硫化钼（MOS2）量子点（QDS）广泛用于传感器，光电化学器件，能量存储和氢气进化。开发绿色和环保方法的充分需求导致MOS2 QD制备的推广。在这里，我们提供了一种适当的方法来通过MOS2散装粉末的乙二胺（Zh）甲基二胺（Zh）剥落来制备MOS2 QD。整个合成过程不含高毒性剂，并在水溶液中进行。得到的MOS2 QD在水溶液中呈现出良好的分散体和427nm的蓝色发射。本作品中的19％的百分比率高于大多数报告的MOS2 QD的产量高于其散装粉末。基于XPS分析成功地与Mo原子结合，整个S原子处于氧化状态。同时，由制备的MOS2 QD具有高性能的空气抗性，因此证明是一种有效的荧光探针，用于检测Fe3 +离子，具有优异的敏感性，选择性和快速反应。将极限检测计算为0.4μmmol/ l。得到的MOS2 QD可以认为Fe3 +检测的荧光探针的潜在候选者。

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  • 来源
    《Applied Surface Science》 |2020年第30期|146811.1-146811.10|共10页
  • 作者

    Ruan Limin; Zhao Yanjie; Chen Zihao; Zeng Wei; Wang Siliang; Liang Dong; Zhao Jinling;

  • 作者单位

    Anhui Univ Natl Engn Res Ctr Anal & Applicat Agroecol Big Da 111 Jiulong Rd Hefei 230601 Anhui Peoples R China|Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

    Anhui Univ Natl Engn Res Ctr Anal & Applicat Agroecol Big Da 111 Jiulong Rd Hefei 230601 Anhui Peoples R China|Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

    Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

    Anhui Univ Natl Engn Res Ctr Anal & Applicat Agroecol Big Da 111 Jiulong Rd Hefei 230601 Anhui Peoples R China|Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

    Anhui Univ Natl Engn Res Ctr Anal & Applicat Agroecol Big Da 111 Jiulong Rd Hefei 230601 Anhui Peoples R China|Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

    Anhui Univ Natl Engn Res Ctr Anal & Applicat Agroecol Big Da 111 Jiulong Rd Hefei 230601 Anhui Peoples R China|Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

    Anhui Univ Natl Engn Res Ctr Anal & Applicat Agroecol Big Da 111 Jiulong Rd Hefei 230601 Anhui Peoples R China|Anhui Univ Sch Elect & Informat Engn 111 Jiulong Rd Hefei 230601 Anhui Peoples R China;

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  • 关键词

    MoS2 quantum dots; Fe3+ ion; Fluorescent probe; Detector; Fluorescence quantum yield;

    机译：MOS2量子点;Fe3 +离子;荧光探针;探测器;荧光量子产量;

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