MODIFICATION OF GAS SEPARATION MEMBRANES ON A NANOMETRIC SCALE

Authors
TOTH A BERTOTI I KHOTIMSKY VS MARLETTA G SULLIVAN JL SAIED SO
Citation
A. Toth et al., MODIFICATION OF GAS SEPARATION MEMBRANES ON A NANOMETRIC SCALE, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 122(3), 1997, pp. 547-549
Citations number
14
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
122
Issue
3
Year of publication
1997
Pages
547 - 549
Database
ISI
SICI code
0168-583X(1997)122:3<547:MOGSMO>2.0.ZU;2-K
Abstract
Fast atom bombardment (FAB) of asymmetric polyvinyltrimethylsilane (PV TMS) membranes by 1 keV Ar, or 1 keV He, or 0.8 keV H beams, with flue nces of about 10(15) particles cm(-2), resulted in a decrease in the t ransmembrane flux of various test gases (He, H-2, O-2, N-2, CH4) and i n a significant increase in the component selectivity. The pristine an d the FAB-treated samples were studied by XPS and SIMS. According to X PS results, the FAB-treatment of the membranes led to an enrichment of carbon, while SIMS showed a simultaneous decrease in the hydrogen con tent in the surface layer, modified primarily on a nanometric scale.