Modification of gas separation membranes on a nanometric scale

A. Tóth, I. Bertóti, V. S. Khotimsky, G. Marletta, J. L. Sullivan, S. O. Saied

Research output: Article

10 Citations (Scopus)


Fast atom bombardment (FAB) of asymmetric polyvinyltrimethylsilane (PVTMS) membranes by 1 keV Ar, or 1 keV He, or 0.8 keV H beams, with fluences of about 1015 particles cm-2, resulted in a decrease in the transmembrane flux of various test gases (He, H2, O2, N2, CH4) and in a significant increase in the component selectivity. The pristine and the FAB-treated samples were studied by XPS and SIMS. According to XPS results, the FAB-treatment of the membranes led to an enrichment of carbon, while SIMS showed a simultaneous decrease in the hydrogen content in the surface layer, modified primarily on a nanometric scale.

Original languageEnglish
Pages (from-to)547-549
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number3
Publication statusPublished - febr. 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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