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<p>To solve the increasingly serious greenhouse effect, while actively responding to the national sustainable development strategy and the “dual carbon” policy. How to deal with CO<sub>2</sub> pollution reasonably and effectively has become a hot research topic. In this study, MOF-74 was prepared by co-flow drip plus solvothermal method, combined with the research basis in the field of MOF composite materials, to give full play to the excellent adsorption properties of MOF materials. Using the modifiability of MOFs, organic amines with different mass fractions were combined to prepare a series of composite materials. The results show that when the addition of TEPA is 30%, the specific surface area and pore volume of TEPA-MOF-30 composite are the largest, which are 255.44&#xa0;m<sup>2</sup>/g and 0.194&#xa0;cm<sup>3</sup>/g, respectively. Under the conditions of 298&#xa0;K and 0.03&#xa0;bar, the pore volume of the TEPA-MOF-30 composite is the largest. The CO<sub>2</sub> adsorption capacity of TEPA-MOF-74-30 is 119.96&#xa0;cm<sup>3</sup>/g, which is 30.25% higher than that of the parent material.</p>

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Preparation of MOF-74 modified with organic amine and its CO2 adsorption performance

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Sheng Wang,
  • Wen-tao Xu,
  • Yue Xu,
  • Xue-yan Du

摘要

To solve the increasingly serious greenhouse effect, while actively responding to the national sustainable development strategy and the “dual carbon” policy. How to deal with CO2 pollution reasonably and effectively has become a hot research topic. In this study, MOF-74 was prepared by co-flow drip plus solvothermal method, combined with the research basis in the field of MOF composite materials, to give full play to the excellent adsorption properties of MOF materials. Using the modifiability of MOFs, organic amines with different mass fractions were combined to prepare a series of composite materials. The results show that when the addition of TEPA is 30%, the specific surface area and pore volume of TEPA-MOF-30 composite are the largest, which are 255.44 m2/g and 0.194 cm3/g, respectively. Under the conditions of 298 K and 0.03 bar, the pore volume of the TEPA-MOF-30 composite is the largest. The CO2 adsorption capacity of TEPA-MOF-74-30 is 119.96 cm3/g, which is 30.25% higher than that of the parent material.