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首页> 外文期刊>RSC Advances >Color-tunable luminescent CdTe quantum dot membranes based on bacterial cellulose (BC) and application in ion detection
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Color-tunable luminescent CdTe quantum dot membranes based on bacterial cellulose (BC) and application in ion detection

机译：基于细菌纤维素（BC）的颜色可调谐发光CDTE量子点膜及离子检测中的应用

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摘要

Color-tunable luminescent membranes of CdTe QDs on bacterial cellulose (BC) nanofibers were successfully fabricated by in situ synthesis in aqueous solution. No nitrogen protection and expensive reagents are needed during the preparation process. The luminescent color of the CdTe/BC nanocomposite membranes with green, orange and red luminescence can be tuned easily by controlling the reaction time. The prepared CdTe/BC nanocomposites were characterized by X-ray diffraction (XRD), field effect scanning electron microscopy with energy dispersive X-ray analysis (FESEM-EDX) and transmission electron microscopy (TEM). Ultraviolet-visible (UV-vis), photoluminescence (PL) spectra and PL quantum efficiency (PL QE) were used to investigate the optical properties. Moreover, we attempted to make the luminescent membranes into an ion test paper. The green luminescent membranes had a good selectivity for Cu2+ with a detection limit of 0.016 mM and the mechanism of quenching Cu2+ were also explored. This work provides a simple, effective and eco-friendly method for the construction of luminescent CdTe QDs on BC membranes with high detectability for detection of Cu2+.
机译：通过在水溶液中原位合成成功制造了细菌纤维素（BC）纳米纤维上的CDTE QDS的颜色可调发光膜。在制备过程中不需要氮保护和昂贵的试剂。通过控制反应时间可以容易地调谐CdTe / BC纳米复合膜的发光颜色，通过控制反应时间可以轻松调整。通过X射线衍射（XRD）表征制备的CDTE / BC纳米复合材料，场效应扫描电子显微镜，具有能量分散X射线分析（FESEM-EDX）和透射电子显微镜（TEM）。使用紫外 - 可见（UV-VI），光致发光（PL）光谱和PL量子效率（PL QE）来研究光学性质。此外，我们试图将发光膜制成离子试验纸。绿色发光膜对Cu2 +具有良好的选择性，检测限为0.016mm，并且还探索了淬火Cu2 +的机制。这项工作提供了一种简单，有效且生态友好的方法，用于在BC膜上施工发光CDTE QDS，具有高可检测Cu2 +的可检测性。

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  • 来源
    《RSC Advances》 |2015年第69期|共6页
  • 作者

    Ge Yan; Chen Shiyan; Yang Jingxuan; Wang Biao; Wang Huaping;

  • 作者单位

    Donghua Univ Coll Mat Sci &

    Engn State Key Lab Modificat Chem Fibers &

    Polymer Mat Key Lab High Performance Fibers &

    Prod Minist Edu Shanghai 201620 Peoples R China;

    Donghua Univ Coll Mat Sci &

    Engn State Key Lab Modificat Chem Fibers &

    Polymer Mat Key Lab High Performance Fibers &

    Prod Minist Edu Shanghai 201620 Peoples R China;

    Donghua Univ Coll Mat Sci &

    Engn State Key Lab Modificat Chem Fibers &

    Polymer Mat Key Lab High Performance Fibers &

    Prod Minist Edu Shanghai 201620 Peoples R China;

    Donghua Univ Coll Mat Sci &

    Engn State Key Lab Modificat Chem Fibers &

    Polymer Mat Key Lab High Performance Fibers &

    Prod Minist Edu Shanghai 201620 Peoples R China;

    Donghua Univ Coll Mat Sci &

    Engn State Key Lab Modificat Chem Fibers &

    Polymer Mat Key Lab High Performance Fibers &

    Prod Minist Edu Shanghai 201620 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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