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<p>An efficient synthesis method for the NbOFFIVE-1-Ni/calcium alginate aerogel composite was reported in this study. The composite material exhibited the combined beneficial properties of both aerogels and MOFs. Calcium alginate, as the carrier of NbOFFIVE-1-Ni, endowed the aerogel with excellent mechanical strength and a synergized macroporous structure with the microporous structure of NbOFFIVE-1-Ni, resulting in a significant synergistic effect. Moreover, the composites exhibited excellent structural properties, including favorable morphology and structure, intact crystal structure, superior thermal stability, mechanical strength, and good cycling stability. The CO<sub>2</sub> adsorption capacity of the aerogel reached 1&#xa0;mmol/g at a CO<sub>2</sub> concentration of 3000&#xa0;ppm and a temperature of 298&#xa0;K. After ten cycles of adsorption and desorption, the efficiency remained stable, indicating the significant potential of the composite for fast uptake of low-concentration CO<sub>2</sub>.</p>

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Fast uptake of low-concentration CO2 on NbOFFIVE-1-Ni/calcium alginate aerogel composites: hierarchical porosity and super stability

  • 期刊论文

  • 发表日期：

    2026年6月23日

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  • Chunlai Wang,
  • Xinbo Li,
  • Wanyue Zang,
  • Zhejiaji Zhu,
  • Zhuoqi Liu,
  • Aijing Ma,
  • Li Lv

摘要

An efficient synthesis method for the NbOFFIVE-1-Ni/calcium alginate aerogel composite was reported in this study. The composite material exhibited the combined beneficial properties of both aerogels and MOFs. Calcium alginate, as the carrier of NbOFFIVE-1-Ni, endowed the aerogel with excellent mechanical strength and a synergized macroporous structure with the microporous structure of NbOFFIVE-1-Ni, resulting in a significant synergistic effect. Moreover, the composites exhibited excellent structural properties, including favorable morphology and structure, intact crystal structure, superior thermal stability, mechanical strength, and good cycling stability. The CO2 adsorption capacity of the aerogel reached 1 mmol/g at a CO2 concentration of 3000 ppm and a temperature of 298 K. After ten cycles of adsorption and desorption, the efficiency remained stable, indicating the significant potential of the composite for fast uptake of low-concentration CO2.