2021
DOI: 10.1002/app.50891
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The aminosilane functionalization of cellulose nanocrystal aerogel via vapor‐phase reaction and its CO2 adsorption characteristics

Abstract: The cellulose nanocrystal (CNC) aerogel was functionalized using aminosilane via vapor‐phase reaction and then the modified CNC aerogel was characterized by several techniques such as Fourier transform infrared spectroscopy, FE‐SEM, and elemental analysis. Finally, the CO2 adsorption on the aminosilane‐grafted CNC aerogel was featured using a dual‐site Langmuir adsorption model. The result showed triethylamine significantly enhanced the amine loading, being 7.06 mmol g−1 at 120°C. The primary amine groups in t… Show more

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Cited by 15 publications
(10 citation statements)
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“…Xu and colleagues were able to functionalize CNC aerogel by employing aminosilane in a vapor-phase process. 260 At 25 °C and 101.33 kPa, the adsorption capacity reached 2.57 mmol CO 2 and was completely dominated by chemisorption. The adsorption capacity was reduced only 3-4% after six cycles.…”
Section: Mechanism For Co 2 Capturementioning
confidence: 93%
“…Xu and colleagues were able to functionalize CNC aerogel by employing aminosilane in a vapor-phase process. 260 At 25 °C and 101.33 kPa, the adsorption capacity reached 2.57 mmol CO 2 and was completely dominated by chemisorption. The adsorption capacity was reduced only 3-4% after six cycles.…”
Section: Mechanism For Co 2 Capturementioning
confidence: 93%
“…During the vapor‐phase reaction, there is no necessity to separate the obtained samples from the solvent, and no waste liquid is generated. Additionally, the presence of water could be excluded so the self‐condensation and the hydrolysis reactions of silanes encountered in the liquid phase could significantly be reduced 13 . The vapor‐phase reaction takes place on the gas–solid interface, which provides a higher grafting rate when compared to the commonly used liquid process 14 .…”
Section: Introductionmentioning
confidence: 99%
“…At the same time, the self-condensation of the silane-based modifiers was prone to take place in liquid-phase modification, resulting in the significant consumption of modifiers and noteworthy blockages inside the subsequent product. 13 In contrast, the hydrophobization of nanocellulose by vapor-phase reactions has attracted considerable attention. During the vapor-phase reaction, there is no necessity to separate the obtained samples from the solvent, and no waste liquid is generated.…”
Section: Introductionmentioning
confidence: 99%
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