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Issue 83, 2015
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Direct synthesis of Cu-BDC frameworks on a quartz crystal microresonator and their application to studies of n-hexane adsorption

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Abstract

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.

Graphical abstract: Direct synthesis of Cu-BDC frameworks on a quartz crystal microresonator and their application to studies of n-hexane adsorption

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Publication details

The article was received on 18 Jun 2015, accepted on 31 Jul 2015 and first published on 31 Jul 2015


Article type: Paper
DOI: 10.1039/C5RA11686D
Citation: RSC Adv., 2015,5, 67454-67458
  • Open access: Creative Commons BY license
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    Direct synthesis of Cu-BDC frameworks on a quartz crystal microresonator and their application to studies of n-hexane adsorption

    C. Yim and S. Jeon, RSC Adv., 2015, 5, 67454
    DOI: 10.1039/C5RA11686D

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