Novel electroblowing synthesis of submicron zirconium dioxide fibers: effect of fiber structure on antimony(v) adsorption

Abstract

Submicron ZrO2 fibers were synthesized by electroblowing and the effect of their crystal structure on Sb(v) adsorption was studied.

Novel electroblowing synthesis of tin dioxide and composite tin dioxide/silicon dioxide submicron fibers for cobalt(ii) uptake

“…It is known that the crystallite size of ceramic submicron bers depends on the calcination temperature. 44 In the bare SnO 2 bers, the crystallite growth is probably accompanied with a grain growth at the higher temperatures 21 although no prominent difference in grain size between the bers calcined at 400, 450 and 500 C was observed on the basis of the FESEM analysis (Fig. 3).…”

“…Moreover, electroblowing enables 2.5 times faster solution feeding rate and thus ber production rate than solution blowing. 41,44 Compared to electrospinning, the additional air ow in electroblowing permits the use of more viscous precursor solutions 45 and produces bers with smaller diameters and fewer beads. 46 It should be feasible to scale up electroblowing for industry, similarly to electrospinning.…”

Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO4–) from aqueous solutions

“…The calcination process of the fibers was carefully optimized to produce fibers with small tetragonal crystallites that have shown good anion uptake performance in the literature. [26,27] The resulted fibers were analyzed with XRD to confirm that the desired crystallinity was obtained and how the Sb-dopant is behaving in the structure. The XRD diffractograms of all fibers showed dominating tetragonal zirconia (t-ZrO 2 ) structure, Fig.…”

“…The process has been applied, for example, in a synthesis of ZrO 2 fibers. [26,27] ZrO 2 is an inorganic material with excellent properties for an adsorbent as it is nontoxic, chemically and physically inert and practically insoluble to water. Various crystal structures, [28,29,30] morphologies,- [31,32,33,34] and amphoteric nature of ZrO 2 [35] make the material an excellent choice for adsorbent design.…”

“…Moreover, ZrO 2 submicron fibers have been used for Sb(V) separation. [26,27] Lönnrot et al- [26] presented that ZrO 2 submicron fibers built up less pressure in a packed bed column than small particles but the fibers still offered large surface area that is necessary for an efficient sorbent.…”