Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 67, Issue -, Pages 394-400Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2014.03.052
Keywords
Cellulose nanofibers; Silver nanoparticles; Catalytic activity
Funding
- National Research Foundation of Korea [2012R1A1A2008761]
- National Research Foundation of Korea [2012R1A1A2008761] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The cellulose acetate nanofibers containing Ag ions [CA(as-spun)] were fabricated by electrospinning a CA solution with 0-5 wt% AgNO3. The CA(as-spun) was UV-irradiated to produce CA nanofibers containing Ag ions/nanopaticles (NPs) [CA(UV)], and the CA(UV) was deacetylated to cellulose nanofibers with Ag NPs [CA(UV+ DA)]. When the CA(UV) was deacetylated with KOH/ethanol solution, the number and size of the Ag NPs were further increased. During the deacetylation reaction, residual Ag+ ions in the CA(UV) seemed to be reduced by hydroxide anions in KOH/ethanol solution and Ag NPs seemed to be diffused and aggregated further in the cellulose nanofibers. The catalytic activity of cellulose-based nanofibers with different Ag contents or phases was investigated using a reduction of methylene blue (MB) as a model reaction. From a model reaction, Ag ions played an important role as a reducing catalyst of MB. (C) 2014 Elsevier B.V. All rights reserved.
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