Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7782348 | Carbohydrate Polymers | 2018 | 33 Pages |
Abstract
In this work, cellulose nanofibrils (CNFs) were used to develop novel amine-based aerogels that can be applied as adsorbents for CO2. Elemental analysis indicated that there was an increase in the C and N content when the concentration of aminosilane was higher. Moreover, Fourier transform infrared spectroscopy confirmed that the aminosilane had been grafted on the CNF. Thermal analysis and X-ray diffraction revealed that the thermal stability of the aerogel decreased after the modification, and the crystallinity decreased. However, the higher amine loading led to a rougher CNF surface and a larger average pore size, which favored the CO2 capture. Furthermore, CNF grafted with aminosilane displayed a high CO2 adsorption capacity (1.91â¯mmol/g 25â¯Â°C, 1â¯bar) and an easy regeneration process by heating at 80â¯Â°C. Therefore, the prepared polymer aerogels might have a highly potential use in the capture of CO2.
Related Topics
Physical Sciences and Engineering
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Organic Chemistry
Authors
Yu Wu, Yang Zhang, Nanqing Chen, Sheng Dai, Hua Jiang, Siqun Wang,