Rapid Microwave-Assisted Synthesis and Characterization of Cellulose Fiber Containing Silver Nanoparticles in Alkaline Aqueous Solution
Traditionally, reducing agents were required during the synthesis process of cellulose fiber containing silver nanoparticles. In this work, cellulose fiber itself was used as matrix and reducing agent to prepare cellulose fibers containing silver nanoparticles under microwave-assisted heating. Xylanse pretreatment and the incorporation of alkali were introduced as an efficient method to improve the reducing power of cellulose fibers. The effects of xylanse pretreatment and the type of alkali, including NH3·H2O, NaOH and Na2CO3 on the preparation of cellulose fiber containing silver nanoparticles, were comparatively investigated. The silver content, morphology, crystal form and surface element of treated cellulose fiber were characterized by atomic absorption spectroscopy, scanning electron microscopy, Raman spectroscopy, and X-ray diffraction and X-ray photoelectron spectroscopy. Surprisingly, the silver content increases with the incorporation of alkali. The obtained cellulose fibers containing silver nanoparticles showed excellent antibacterial activity against Escherichia Coli and Staphylococcus aureus.
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Document Type: Research Article
Publication date: August 1, 2016
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