Nanoporous ultra-high specific surface inorganic fibres

Masaki Kanehata, Bin Ding, Seimei Shiratori

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Nanoporous inorganic (silica) nanofibres with ultra-high specific surface have been fabricated by electrospinning the blend solutions of poly(vinyl alcohol) (PVA) and colloidal silica nanoparticles, followed by selective removal of the PVA component. The configurations of the composite and inorganic nanofibres were investigated by changing the average silica particle diameters and the concentrations of colloidal silica particles in polymer solutions. After the removal of PVA by calcination, the fibre shape of pure silica particle assembly was maintained. The nanoporous silica fibres were assembled as a porous membrane with a high surface roughness. From the results of Brunauer-Emmett-Teller (BET) measurements, the BET surface area of inorganic silica nanofibrous membranes was increased with the decrease of the particle diameters. The membrane composed of silica particles with diameters of 15 nm showed the largest BET surface area of 270.3 m2 g-1 and total pore volume of 0.66 cm3 g-1. The physical absorption of methylene blue dye molecules by nanoporous silica membranes was examined using UV-vis spectrometry. Additionally, the porous silica membranes modified with fluoroalkylsilane showed super-hydrophobicity due to their porous structures.

Original languageEnglish
Article number315602
JournalNanotechnology
Volume18
Issue number31
DOIs
Publication statusPublished - 2007 Aug 8

Fingerprint

Silicon Dioxide
Silica
Fibers
Membranes
Nanofibers
Methylene Blue
Electrospinning
Polymer solutions
Hydrophobicity
Calcination
Spectrometry
Alcohols
Coloring Agents
Dyes
Surface roughness
Nanoparticles
Molecules
Composite materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Nanoporous ultra-high specific surface inorganic fibres. / Kanehata, Masaki; Ding, Bin; Shiratori, Seimei.

In: Nanotechnology, Vol. 18, No. 31, 315602, 08.08.2007.

Research output: Contribution to journalArticle

Kanehata, Masaki ; Ding, Bin ; Shiratori, Seimei. / Nanoporous ultra-high specific surface inorganic fibres. In: Nanotechnology. 2007 ; Vol. 18, No. 31.
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