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Atom-level interaction design between amines and support for achieving efficient and stable CO2 capture

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  • Xin Sun

    (Southern University of Science and Technology)

  • Xuehua Shen

    (Southern University of Science and Technology
    Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City)

  • Hao Wang

    (Shenzhen Polytechnic University)

  • Feng Yan

    (Southern University of Science and Technology
    Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City)

  • Jiali Hua

    (Southern University of Science and Technology)

  • Guanghuan Li

    (Southern University of Science and Technology)

  • Zuotai Zhang

    (Southern University of Science and Technology
    Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City
    Shenzhen Polytechnic University)

Abstract

Amine-functionalized adsorbents offer substantial potential for CO2 capture owing to their selectivity and diverse application scenarios. However, their effectiveness is hindered by low efficiency and unstable cyclic performance. Here we introduce an amine-support system designed to achieve efficient and stable CO2 capture. Through atom-level design, each polyethyleneimine (PEI) molecule is precisely impregnated into the cage-like pore of MIL–101(Cr), forming stable composites via strong coordination with unsaturated Cr acid sites within the crystal lattice. The resulting adsorbent demonstrates a low regeneration energy (39.6 kJ/molCO2), excellent cyclic stability (0.18% decay per cycle under dry CO2 regeneration), high CO2 adsorption capacity (4.0 mmol/g), and rapid adsorption kinetics (15 min for saturation at 30 °C). These properties stem from the unique electron-level interaction between the amine and the support, effectively preventing carbamate products’ dehydration. This work presents a feasible and promising cost-effective and sustainable CO2 capture strategy.

Suggested Citation

  • Xin Sun & Xuehua Shen & Hao Wang & Feng Yan & Jiali Hua & Guanghuan Li & Zuotai Zhang, 2024. "Atom-level interaction design between amines and support for achieving efficient and stable CO2 capture," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48994-8
    DOI: 10.1038/s41467-024-48994-8
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    References listed on IDEAS

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    1. Genggeng Qi & Liling Fu & Emmanuel P. Giannelis, 2014. "Sponges with covalently tethered amines for high-efficiency carbon capture," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
    2. Chen, Chao & Xu, Huifang & Jiang, Qingbin & Lin, Zhan, 2021. "Rational design of silicas with meso-macroporosity as supports for high-performance solid amine CO2 adsorbents," Energy, Elsevier, vol. 214(C).
    3. Woosung Choi & Kyungmin Min & Chaehoon Kim & Young Soo Ko & Jae Wan Jeon & Hwimin Seo & Yong-Ki Park & Minkee Choi, 2016. "Epoxide-functionalization of polyethyleneimine for synthesis of stable carbon dioxide adsorbent in temperature swing adsorption," Nature Communications, Nature, vol. 7(1), pages 1-8, November.
    4. Xia Rong & Rammile Ettelaie & Sergey V. Lishchuk & Huaigang Cheng & Ning Zhao & Fukui Xiao & Fangqin Cheng & Hengquan Yang, 2019. "Liquid marble-derived solid-liquid hybrid superparticles for CO2 capture," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
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