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Sponges with covalently tethered amines for high-efficiency carbon capture

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  • Genggeng Qi

    (Cornell University)

  • Liling Fu

    (Cornell University)

  • Emmanuel P. Giannelis

    (Cornell University)

Abstract

Adsorption using solid amine sorbents is an attractive emerging technology for energy-efficient carbon capture. Current syntheses for solid amine sorbents mainly based on physical impregnation or grafting-to methods (for example, aminosilane-grafting) lead to limited sorbent performance in terms of stability and working capacity, respectively. Here we report a family of solid amine sorbents using a grafting-from synthesis approach and synthesized by cationic polymerization of oxazolines on mesoporous silica. The sorbent with high amount of covalently tethered amines shows fast adsorption rate, high amine efficiency and sorbent capacity well exceeding the highest value reported to date for low-temperature carbon dioxide sorbents under simulated flue gas conditions. The demonstrated efficiency of the new amine-immobilization chemistry may open up new avenues in the development of advanced carbon dioxide sorbents, as well as other nitrogen-functionalized systems.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6796
    DOI: 10.1038/ncomms6796
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    Cited by:

    1. Zhu, Xuancan & Ge, Tianshu & Yang, Fan & Wang, Ruzhu, 2021. "Design of steam-assisted temperature vacuum-swing adsorption processes for efficient CO2 capture from ambient air," Renewable and Sustainable Energy Reviews, Elsevier, vol. 137(C).
    2. 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.
    3. Yang, Chuanruo & Du, Zhilin & Jin, Junsu & Chen, Jian & Mi, Jianguo, 2020. "Epoxide-functionalized tetraethylenepentamine encapsulated into porous copolymer spheres for CO2 capture with superior stability," Applied Energy, Elsevier, vol. 260(C).

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