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Thermal oxidation etched carbon fiber aerogels with hierarchical pore structure as high-performance oil adsorbent

  • Polymers & biopolymers
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Abstract

A novel thermal oxidation etching (TOE) strategy was employed here to increase the voids of aerogels. The etched carbon fiber aerogels (ECFAs) have exhibited a network structure constituted by fibers, in which macropores ranging from 0.4 to 5 μm could be observed. Moreover, ECFAs also showed wide distributions in meso/micropores, which further proved that the ECFAs owned a hierarchical pore structure. Meanwhile, porosity was used to measure the space for oil storage inside the ECFAs. Among them, the ECFA-25 (ECFA that was etched for 25 min) had the highest porosity of 99.63%. It also showed the best oil adsorption performance (64.75 g/g), more than twice that of the unetched carbon fiber aerogels. This promising TOE strategy exhibits significant potential as a guidance to obtain efficient sorbents in oil adsorption.

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Acknowledgements

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Author notes

  1. Hongfei Kanga and Bihui Qina have contributed equally to this work.

Authors and Affiliations

  1. School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China

    Hongfei Kang, Bihui Qin, Jifa Long, Yan Li & Qi ** Huang

Authors
  1. Hongfei Kang
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  2. Bihui Qin
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  3. Jifa Long
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  4. Yan Li
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  5. Su** Huang
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Contributions

HK: Data curation, Validation, and Writing-review & editing; BQ: Writing-original draft, Formal analysis; JL: Visualization; YL: Investigation; SH: Resources; QX: Conceptualization, Writing-review & editing.

Corresponding author

Correspondence to Qi **ao.

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Kang, H., Qin, B., Long, J. et al. Thermal oxidation etched carbon fiber aerogels with hierarchical pore structure as high-performance oil adsorbent. J Mater Sci 58, 12481–12489 (2023). https://doi.org/10.1007/s10853-023-08804-w

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  • DOI: https://doi.org/10.1007/s10853-023-08804-w

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