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首页> 外文期刊>RSC Advances >Direct synthesis of Cu-BDC frameworks on a quartz crystal microresonator and their application to studies of n-hexane adsorption
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Direct synthesis of Cu-BDC frameworks on a quartz crystal microresonator and their application to studies of n-hexane adsorption

机译：直接合成石英晶晶体中的Cu-BDC框架及其在基于N-己烷吸附的应用中的应用

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摘要

We developed a facile route for synthesizing Cu-BDC frameworks using metallic copper as a metal ion source. A thin film of copper was vacuum deposited onto a quartz crystal microresonator (QCM) and converted to Cu-BDC frameworks via a solvothermal reaction. The initially superhydrophilic Cu-BDC surface became superhydrophobic upon being treated with octadecyltrichlorosilane (ODTS). Exposure of the Cu-BDC-coated quartz crystal microresonator (CuBDC-QCM) to various concentrations of n-hexane vapor induced changes in the resonance frequency and Q factor of the resonator that were related to the adsorbed mass of n-hexane and the modulus of the Cu-BDC layer, respectively. The mass of n-hexane vapor adsorbed on the superhydrophobic Cu-BDC layer was found to be three times that on the superhydrophilic Cu-BDC layer. Furthermore, the adsorption of n-hexane on the superhydrophobic Cu-BDC layer induced an increase in the modulus of the framework whereas the adsorption on the superhydrophilic layer induced a decrease in the modulus of the framework. These opposite changes were attributed to differences in the binding sites of n-hexane vapor inside the framework.
机译：我们开发了一种使用金属铜作为金属离子源合成Cu-BDC框架的容易路径。将薄膜薄膜沉积在石英晶体微生物（QCM）上，并通过溶剂热反应转化为Cu-BDC框架。最初过硫酸的Cu-BDC表面在用十八烷基三氯硅烷（ODTS）处理后变得超细杂志。将Cu-BDC涂覆的石英晶体微生物（CubDC-QCM）暴露于各种浓度的正己烷蒸气诱导与谐振器的共振频率和Q系数的变化与N-己烷的吸附质量和模量有关分别的Cu-BDC层。发现吸附在超疏水Cu-BDC层上的N-己烷蒸气的质量是在超硫酸Cu-BDC层上的三倍。此外，在超疏水Cu-BDC层上的对正己烷的吸附诱导框架模量的增加，而过硫基层的吸附诱导框架模量减少。这些相反的变化归因于框架内的N-己烷蒸气的结合位点的差异。

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  • 来源
    《RSC Advances》 |2015年第83期|共5页
  • 作者

    Yim Changyong; Jeon Sangmin;

  • 作者单位

    Pohang Univ Sci &

    Technol POSTECH Dept Chem Engn Pohang Gyeongbuk South Korea;

    Pohang Univ Sci &

    Technol POSTECH Dept Chem Engn Pohang Gyeongbuk South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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