Delignified wood aerogels as scaffolds coated with an oriented chitosan-cyclodextrin co-polymer for removal of microcystin-LR.
| Autor: | Gomez-Maldonado D; Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University Auburn AL 36849 USA soledad.peresin@auburn.edu., Reynolds AM; Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University Auburn AL 36849 USA soledad.peresin@auburn.edu., Burnett DJ; Surface Measurement Systems Allentown PA 18103 USA., Babu RJ; Harrison School of Pharmacy, Auburn University Auburn AL 36849 USA., Waters MN; Department of Crop, Soil and Environmental Sciences, Auburn University Auburn AL 36849 USA., Peresin MS; Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University Auburn AL 36849 USA soledad.peresin@auburn.edu. |
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| Jazyk: | angličtina |
| Zdroj: | RSC advances [RSC Adv] 2022 Jul 13; Vol. 12 (31), pp. 20330-20339. Date of Electronic Publication: 2022 Jul 13 (Print Publication: 2022). |
| DOI: | 10.1039/d2ra03556a |
| Abstrakt: | Nano-porous aerogels are an advantageous approach to produce low-density materials with high surface area, particularly when using biobased materials. Frequently, most biobased aerogels are synthesized through a bottom-up approach, which requires high energy inputs to break and rebuild the raw materials, and for elimination of water. To curb this, this work focused on generating aerogels by a top-down approach through the delignification of a wood substrate while eliminating water by solvent exchange. To diversify the surface chemistry for use in water treatment, the delignified wood-nanowood-was coated with a chitosan-cyclodextrin co-polymer and tested in the capture of microcystin-LR. The generated nanowood structure had 75% porosity after coating, with up to 339% water swelling and an adsorption capacity of 0.12 mg g -1 of the microcystin. This top-down technique enables the generation of low-cost aerogels by reducing steps, using a biobased self-assembled coating with hydrophobic active sites, and avoiding costly energetic input. Competing Interests: The authors declare no conflict of interest. (This journal is © The Royal Society of Chemistry.) |
| Databáze: | MEDLINE |
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