Cellulose Nanofibril Stabilized Pickering Emulsion Templated Aerogel with High Oil Absorption Capacity.
| Autor: | Mubarak SA; Department of Sustainable Bioproducts, Mississippi State University, 201 Locksley Way, Starkville, Mississippi 39759, United States., Kim Y; Department of Sustainable Bioproducts, Mississippi State University, 201 Locksley Way, Starkville, Mississippi 39759, United States., Elsayed I; Department of Sustainable Bioproducts, Mississippi State University, 201 Locksley Way, Starkville, Mississippi 39759, United States., Hassan EB; Department of Sustainable Bioproducts, Mississippi State University, 201 Locksley Way, Starkville, Mississippi 39759, United States. |
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| Jazyk: | angličtina |
| Zdroj: | ACS omega [ACS Omega] 2023 Sep 25; Vol. 8 (40), pp. 36856-36867. Date of Electronic Publication: 2023 Sep 25 (Print Publication: 2023). |
| DOI: | 10.1021/acsomega.3c03871 |
| Abstrakt: | Nanocellulose-based aerogels, featuring a three-dimensional porous structure, are considered as a desirable green absorbent because of their exceptional absorption performance as well as the abundance and renewability of the raw material. However, these aerogels often require hydrophobic modification or carbonization, which is often environmentally harmful and energy-intensive. In this study, we introduce a Pickering-emulsion-templating approach to fabricate a cellulose nanofibril (CNF) aerogel with a hierarchical pore structure, allowing for high oil absorption capacity. n -Hexane-CNF oil-in-water Pickering emulsions are prepared as an emulsion template, which is further lyophilized to create a hollow microcapsule-based CNF (HM-CNF) aerogel with a density ranging from 1.3 to 6.1 mg/cm 3 and a porosity of ≥99.6%. Scanning electron microscopy and Brunauer-Emmett-Teller analyses reveal the HM-CNF aerogel's hierarchical pore structure, originating from the CNF Pickering emulsion template, and also confirm the aerogel's very high surface area of 216.6 m 2 /g with an average pore diameter of 8.6 nm. Furthermore, the aerogel exhibits a maximum absorption capacity of 354 g/g and 166 g/g for chloroform and n -hexadecane, respectively, without requiring any surface modification or chemical treatment. These combined findings highlight the potential of the Pickering-emulsion-templated CNF aerogel as an environmentally sustainable and high-performance oil absorbent. Competing Interests: The authors declare no competing financial interest. (© 2023 The Authors. Published by American Chemical Society.) |
| Databáze: | MEDLINE |
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