A promising process to modify cellulose nanofibers for carbon dioxide (CO2) adsorption

Sima Sepahvand; Mehdi Jonoobi; Alireza Ashori; Florent Gauvin; H.J.H. Brouwers; Kristiina Oksman; Qingliang Yu

doi:10.1016/j.carbpol.2019.115571

A promising process to modify cellulose nanofibers for carbon dioxide (CO₂) adsorption

Sima Sepahvand, Mehdi Jonoobi (Corresponding author), Alireza Ashori (Corresponding author), Florent Gauvin, H.J.H. Brouwers, Kristiina Oksman, Qingliang Yu (Corresponding author)

Building Materials

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

A novel process of using phthalimide to modify cellulose nanofibers (CNF) for CO₂ adsorption was studied. The effectiveness of the modification was confirmed by ATR-IR. Phthalimide incorporation onto CNF was confirmed with the characteristic peaks of NH₂, C–N, and ester bonding COO⁻ was observable. The XPS analyses confirmed the presence of N1s peak in Ph-CNF, meaning that the hydroxyl groups reacted with the amino groups (NH₂) of phthalimide on the CNF surface. Based on the results, surface modification and addition of phthalimide increased the specific surface area, but also decreased the overall porosity, size of pores and volume of pores. When the temperature, humidity, pressure, and airflow rate increased, the CO₂ adsorption significantly increased. The CO₂ adsorption of phthalimide-modified CNF was confirmed by ATR-IR spectroscopy as the characteristic peaks of HCO₃ ⁻,NH₃ ⁺ and ester bonding NCOO⁻ were visible on the spectra.

Original language	English
Article number	115571
Number of pages	10
Journal	Carbohydrate Polymers
Volume	230
DOIs	https://doi.org/10.1016/j.carbpol.2019.115571
Publication status	Published - 15 Feb 2020

Keywords

Aerogels
Cellulose nanofiber
Chemical modification
CO adsorption

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Sepahvand, S., Jonoobi, M., Ashori, A., Gauvin, F., Brouwers, H. J. H., Oksman, K., & Yu, Q. (2020). A promising process to modify cellulose nanofibers for carbon dioxide (CO₂) adsorption. Carbohydrate Polymers, 230, [115571]. https://doi.org/10.1016/j.carbpol.2019.115571

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abstract = "A novel process of using phthalimide to modify cellulose nanofibers (CNF) for CO2 adsorption was studied. The effectiveness of the modification was confirmed by ATR-IR. Phthalimide incorporation onto CNF was confirmed with the characteristic peaks of NH2, C–N, and ester bonding COO− was observable. The XPS analyses confirmed the presence of N1s peak in Ph-CNF, meaning that the hydroxyl groups reacted with the amino groups (NH2) of phthalimide on the CNF surface. Based on the results, surface modification and addition of phthalimide increased the specific surface area, but also decreased the overall porosity, size of pores and volume of pores. When the temperature, humidity, pressure, and airflow rate increased, the CO2 adsorption significantly increased. The CO2 adsorption of phthalimide-modified CNF was confirmed by ATR-IR spectroscopy as the characteristic peaks of HCO3 −,NH3 + and ester bonding NCOO− were visible on the spectra.",

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A promising process to modify cellulose nanofibers for carbon dioxide (CO₂) adsorption. / Sepahvand, Sima; Jonoobi, Mehdi (Corresponding author); Ashori, Alireza (Corresponding author); Gauvin, Florent ; Brouwers, H.J.H.; Oksman, Kristiina; Yu, Qingliang (Corresponding author).

In: Carbohydrate Polymers, Vol. 230, 115571, 15.02.2020.

Research output: Contribution to journal › Article › Academic › peer-review

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AU - Ashori, Alireza

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AU - Brouwers, H.J.H.

AU - Oksman, Kristiina

AU - Yu, Qingliang

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