Exploring the effects of cellulose sources on silver reduction and the bacterial removal of nanocellulose-based hydrogel beads.

Autor: Gomez-Maldonado D; Sustainable Bio-based Materials Laboratory, Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University. 602 Duncan Dr, Auburn, AL 36849, United States., Dickson BR; Sustainable Bio-based Materials Laboratory, Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University. 602 Duncan Dr, Auburn, AL 36849, United States., Au G; Sustainable Bio-based Materials Laboratory, Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University. 602 Duncan Dr, Auburn, AL 36849, United States., Bortner MJ; Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States; Department of Chemical Engineering, Virginia Tech, Blacksburg, VA 24061, United States., Li M; Center for Renewable Carbon, School of Natural Resources, The University of Tennessee, Knoxville, TN 37996, United States., Espinosa E; BioPrEn Group (RNM 940), Área de Ingeniería Química, Instituto Químico para la Energía y el Medioambiente, Facultad de Ciencias, Universidad de Córdoba, Córdoba 14014, Spain., Rodriguez A; BioPrEn Group (RNM 940), Área de Ingeniería Química, Instituto Químico para la Energía y el Medioambiente, Facultad de Ciencias, Universidad de Córdoba, Córdoba 14014, Spain., Higgins B; Biosystems Engineering, College of Engineering, Auburn University, 520 Devall Dr, Auburn, AL 36849, United States., Peresin MS; Sustainable Bio-based Materials Laboratory, Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University. 602 Duncan Dr, Auburn, AL 36849, United States. Electronic address: soledad.peresin@auburn.edu.
Jazyk: angličtina
Zdroj: Carbohydrate polymers [Carbohydr Polym] 2025 Jan 01; Vol. 347, pp. 122771. Date of Electronic Publication: 2024 Sep 22.
DOI: 10.1016/j.carbpol.2024.122771
Abstrakt: With water access challenged, there is a need to develop efficient and sustainable alternatives for water purification. Here, cellulose nanofibrils (CNFs) isolated from three source materials (softwood, soybean hulls and oat straw) were compared for the generation of hydrogels beads, and compared as support and reducing agent for silver nanoparticles formation. The silver-functionalized hydrogel beads (Ag-CNFs) were characterized, and the surface energy and specific surface area were evaluated. Antimicrobial testing was conducted to assess the efficacy of the Ag-CNFs against E. coli. The results showed that the Ag-CNFs had a higher specific surface area and lower surface energy compared with unmodified CNFs. Softwood-based Ag-CNFs exhibited the highest silver content and specific surface area, while the soybean hull based showed the highest hydrophobic character. The silver-functionalized soybean hull beads (Ag-sbCNF) showed the highest efficacy in reducing the growth of bacteria. Overall, this study highlights the potential of silver-functionalized CNFs hydrogel beads as a promising environmentally friendly and sustainable material for water filtration and disinfection. The findings also suggest that lower surface energy of the Ag-CNFs play an important role in their antimicrobial effect on tested water by enabling shorter retention, providing useful insights into the design of future water filtration materials.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Maria S. Peresin reports financial support was provided by National Science Foundation. Maria S. Peresin reports financial support was provided by National Institute of Food and Agriculture. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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