期刊
CARBOHYDRATE POLYMERS
卷 131, 期 -, 页码 134-141出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.05.060
关键词
Silver nanoparticle synthesis; Lignin; Cellulose nanofibers; UV absorbing; Antimicrobial
Lignin has proven to be highly effective green multi-functional binding, complexing and reducing agents for silver cations as well as capping agents for the synthesis of silver nanoparticles on ultra-fine cellulose fibrous membranes. Silver nanoparticles could be synthesized in 10 min to be densely distributed and stably bound on the cellulose fiber surfaces at up to 2.9% in mass. Silver nanoparticle increased in sizes from 5 to 100 nm and became more polydispersed in size distribution on larger fibers and with longer synthesis time. These cellulose fiber bound silver nanoparticles did not agglomerate under elevated temperatures and showed improved thermal stability. The presence of alkali lignin conferred moderate UV absorbing ability in both UV-B and UV-C regions whereas the bound silver nanoparticles exhibited excellent antibacterial activities toward Escherichia coli. (C) 2015 Elsevier Ltd. All rights reserved.
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