Crosslinked pectin nanofibers with well-dispersed Ag nanoparticles: Preparation and characterization

Carbohydrate Polymers
Ke LiYichun Liu

Abstract

Nanofibers with well-dispersed Ag nanoparticles (AgNPs) are promising for some applications. Dispersion electrospinning is a straightforward preparation method but is suffered from the negative effects that the further treatments of nanofibers after electrospinning may bring to the dispersed AgNPs. In this study, we report a post reduction method to fabricate nanofibers with well-dispersed AgNPs. Crosslinked nanofibers of a hydrophilic polysaccharide, pectin, are used. When being immersed in the aqueous solution of AgNO3, the crosslinked pectin nanofibers swell, allowing Ag+ ions enter inside. The surrounding crosslinked pectin macromolecules functionalize as in situ reducing reagents to reduce Ag+ ions, nucleating the crystallization of AgNPs locally. X-ray diffraction characterizations indicate that the formed AgNPs are face-centered cubic crystalline. Results of optical imaging, UV-vis spectroscopy, scanning electron microscopy (SEM), electron dispersive spectrometry as well as transmission electron microscopy (TEM) indicate that the content and size of AgNPs increase with the increase of AgNO3 concentration and incubation time. SEM and TEM results show that the dispersion of the AgNPs does not affect the nanofibrous structu...Continue Reading

Citations

Jun 23, 2020·Journal of Texture Studies·Zafer CeylanMustafa Tahsin Yilmaz
Jan 24, 2019·International Journal of Molecular Sciences·Chengzhu LiaoSie Chin Tjong
Dec 2, 2020·Materials Science & Engineering. C, Materials for Biological Applications·Huaxin LvYichun Liu
Jan 16, 2021·International Journal of Biological Macromolecules·Shahrzad Zirak Hassan KiadehFrank K Ko

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