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Hierarchical pores in degradable polymer-based aerogel for CO\(_2\) adsorption

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Abstract

Gas adsorption materials, such as active carbon and zeolite, are known to cause second pollution after being used, due to their non-degradability. In this study, we prepared a degradable aerogel material based on cellulose nanocrystals (CNCs) and poly vinyl alcohol (PVA) with hierarchical pores and excellent CO\(_2\)-adsorption performance. The micropores, with specific area of 442 m\(^2\cdot\)g\(^{-1}\), are obtained via in-situ growing MIL-100(Fe) on CNCs and concurrently assembling those CNC particles. The resulting aggregate is further introduced into degradable PVA aerogels, who offer mesopores and macropores. The resulting degradable material has a density of 0.216 g\(\cdot\)cm\(^{-3}\) and can adsorb 0.357 mmol CO\(_2\) per gram. This makes it a promising candidate for use in the preparation of light weight CO\(_2\) collectors.

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Data availability

The data that support the findings of this study are available from the corresponding author, Jin Huang, upon reasonable request.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China, Chongqing Education Committee, the Organization Department of the CPC Chongqing Committee, Chongqing human resources and Social Security Bureau, the Science & Technology Department of Sichuan Province, and Chongqing science and Technology Bureau.

Funding

National Natural Science Foundation of China (51973175); Project for Chongqing University Innovation Research Group of Chongqing Education Committee (CXQT19008); Chongqing Talent Plan for Innovation and Entrepreneurship Demonstration Team (CQYC201903243); Key R &D Project of Sichuan Province (22ZDYF3173); Technological Innovation and Application Development “Overall Rationing System” Project of Chongqing Talent Plan (cstc2021ycjh-bgzxm0307).

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Contributions

All authors contributed to the study conception and design. Material preparation and data collection were performed by SZ. Data analysis was performed by LG. The first draft of the manuscript was written by LG and SZ, and all authors commented on the previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Jin Huang.

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The authors have no relevant financial or non-financial interests to disclose.

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Ethics Committee approval was obtained from the Institutional Ethics Committee of Southwest University.

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Supplementary Information

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Supplementary Materials:

The supplementary information presents 336 formula showing the major form of the H-bonds between PVA and MIL- 337 100(Fe). Meanwhile, the supplementary information includes the size distri338 bution of neat MIL-100(Fe) particles and typical SEM images of the aerogels. 339 The supplementary information also gives the specific condition of the test 340 environment for material degradation, used in the literature research of this 341 study. (pdf 11,955KB)

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Gan, L., Zheng, S. & Huang, J. Hierarchical pores in degradable polymer-based aerogel for CO\(_2\) adsorption. Cellulose 30, 7877–7888 (2023). https://doi.org/10.1007/s10570-023-05365-8

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  • DOI: https://doi.org/10.1007/s10570-023-05365-8

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