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Synthesis Method for Cellulose Nanofiber Biotemplated Palladium Composite Aerogels
Published on: May 9, 2019
A facile approach to light weight, high porosity cellulose aerogels
1Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250199, PR China.
Abstract:
This work reported a facile approach to make cellulose-based aerogels in NaOH/urea aqueous solution via freeze-drying hydrogels, which were obtained by mixing N,N'-methylene bisacrylamide (MBA) with cellulose solution at room temperature. The cellulose solution showed pronounced MBA-induced gelation behaviors. The obtained cellulose aerogels possessed a three dimensional network with macroporous structure (20-600 μm), low density (0.0820-0.0083 g/cm3), high porosity (90.3%-99.02%), moderate thermal stability (275 °C) and certain absorbency to Cu (II) (85 mg/g) and methylene blue (MB) (115 mg/g). Cellulose aerogels with different morphologies can be obtained by adjusting the cross-linking degree and the concentration of cellulose. This kind of aerogel provides an excellent matrix for the functionalization of cellulose-based aerogel.
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