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<p>Under hydrothermal conditions, a two-dimensional (2D) Anderson-type polyoxometalate-based framework {[Cu(dap)<sub>2</sub>][Cu(dap)(H<sub>2</sub>O)<sub>2</sub>]<sub>2</sub>[TeMo<sub>6</sub>O<sub>24</sub>]} (<b>1</b>, dap = 1,2-diaminopropane) was synthesized and characterized by single crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy, electrochemical impedance spectroscopy and powder X-ray diffraction. Complex <b>1</b> features an unusual mixed-linkage 2D metal–organic network constructed from both single [Cu(dap)<sub>2</sub>]<sup>2+</sup> and double [Cu(dap)(H<sub>2</sub>O)<sub>2</sub>]<sup>2+</sup> linkers. As a heterogeneous catalyst, <b>1</b> exhibited outstanding catalytic performance for the oxidation of 2-chloroethyl ethyl sulfide, achieving 99.1% conversion and 100% selectivity toward CEESO within 10&#xa0;min at 35&#xa0;°C, accompanied by excellent structural and catalytic stability. Moreover, <b>1</b> demonstrated promising electrochemical sensing properties of Cu<sup>2+</sup> ions, showing a low limit of detection of 0.492&#xa0;μM, a high sensitivity of 0.426&#xa0;μA μM<sup>−1</sup> and good anti-interference ability.</p>

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A high-performance bifunctional catalyst with a 2D [TeMo6O24]-based framework for efficient CEES oxidation and electrochemical sensing of Cu2+

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Cihang Kang,
  • Lian Yang,
  • Yuan Zheng,
  • Zhong Zhang,
  • Shuaixue Yan,
  • Guocheng Liu,
  • Xiuli Wang

摘要

Under hydrothermal conditions, a two-dimensional (2D) Anderson-type polyoxometalate-based framework {[Cu(dap)2][Cu(dap)(H2O)2]2[TeMo6O24]} (1, dap = 1,2-diaminopropane) was synthesized and characterized by single crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy, electrochemical impedance spectroscopy and powder X-ray diffraction. Complex 1 features an unusual mixed-linkage 2D metal–organic network constructed from both single [Cu(dap)2]2+ and double [Cu(dap)(H2O)2]2+ linkers. As a heterogeneous catalyst, 1 exhibited outstanding catalytic performance for the oxidation of 2-chloroethyl ethyl sulfide, achieving 99.1% conversion and 100% selectivity toward CEESO within 10 min at 35 °C, accompanied by excellent structural and catalytic stability. Moreover, 1 demonstrated promising electrochemical sensing properties of Cu2+ ions, showing a low limit of detection of 0.492 μM, a high sensitivity of 0.426 μA μM−1 and good anti-interference ability.