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Abstract <p>The coordination-driven self-assembly of Cd<sup>2+</sup> ions with 3-aminoisonicotinic acid yielded&#xa0;two metal-organic frameworks (3-AIN-Cd-MOF-1 and 3-AIN-Cd-MOF-2) with distinct channels in the frameworks. The single crystal X-ray diffraction revealed a non-porous, close-packed framework for 3-AIN-Cd-MOF-1 and complex hexagonal open channels for 3-AIN-Cd-MOF-2. FTIR spectroscopy, powder X-ray diffraction, and thermogravimetry were discussed in detail for these compounds. 3-AIN-Cd-MOF-1 exhibits exceptional water stability, while 3-AIN-Cd-MOF-2 displays a high ammonia adsorption ability with 11.0 mmol/g at 1 atm and room temperature. In situ infrared spectroscopy was further used to monitor the ammonia adsorption procedure in 3-AIN-Cd-MOF-2 for a deeper understanding.</p>

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Synthesis and Characterization of Two Cd2+-Based Metal-Organic Frameworks and Their Ammonia Adsorption Performance

  • 期刊论文

  • 发表日期：

    2025年4月29日

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  • Qian Han,
  • Yun-fei Bai,
  • Qing-yu Men,
  • Ming-ming Ruan,
  • Xiao-peng Xuan,
  • Lian Zhou

摘要

Abstract

The coordination-driven self-assembly of Cd2+ ions with 3-aminoisonicotinic acid yielded two metal-organic frameworks (3-AIN-Cd-MOF-1 and 3-AIN-Cd-MOF-2) with distinct channels in the frameworks. The single crystal X-ray diffraction revealed a non-porous, close-packed framework for 3-AIN-Cd-MOF-1 and complex hexagonal open channels for 3-AIN-Cd-MOF-2. FTIR spectroscopy, powder X-ray diffraction, and thermogravimetry were discussed in detail for these compounds. 3-AIN-Cd-MOF-1 exhibits exceptional water stability, while 3-AIN-Cd-MOF-2 displays a high ammonia adsorption ability with 11.0 mmol/g at 1 atm and room temperature. In situ infrared spectroscopy was further used to monitor the ammonia adsorption procedure in 3-AIN-Cd-MOF-2 for a deeper understanding.