Investigation of the electro-spinnability of alginate solutions containing gold precursor HAuCl 4

Abstract

Alginate nanofibers with an average diameter of 75 nm have been prepared by the electrospinning process. In addition, the spinnability of the solutions in the presence of the gold precursor HAuCl 4 was investigated. At low concentrations of HAuCl 4 well-formed nanofibers were produced, whereas as its concentration increases the nanofibrous mats present an increased number of bead-like defects. Herein, the in situ preparation of gold nanoparticles (Au NPs) is discussed since sodium alginate (SA) acts as the reducing agent and a mechanism is proposed in order to explain the beadeffect as well as the surface morphology of the alginate fibers decorated with Au NPs.

Electrospun Alginate Nanofibers Toward Various Applications: A Review

“…The filtration membranes for dye separation were also reported [66,67]. Guo et al [67] prepared a composite membrane that consisted of three layers: polyhydroxybutyrate (PHB) as substrate, PHB-calcium alginate nanofibers as a mid layer, and calcium alginate multi-walled carbon nanotubes as a selective layer. The membrane exhibited high flux of approximately 32.95 L/m 2 hr and a rejection rate of approximately 98.20%.…”