Characterization of nanoporous structures of polyphenylene oxide derived carbon membranes by means of 129Xe NMR.
The 129Xe NMR spectroscopy has become a powerful technique of materials characterization because the xenon atom has a very large polarizability. It is well known that the signal of xenon sorbed in porous media is sensitively affected by the surrounding environments such as the chemistry of material surface. In this study, the pore properties of nanoporous PPO (polyphenylene oxide) derived carbon membranes were characterized by means of the variable temperature (VT)-hyperpolarized Xe NMR. The Xe NMR results showed good agreements with the adsorption results of CO2 for the PPO derived nanoporous carbon membranes. It was clearly shown that the 129Xe NMR could be used as one of the promising characterization methods of nanoporous materials with low surface area and small pore volume.
Lee
Young Ju
YJ
Korea Basic Science Institute (KBSI), Gwangju Center Gwangju 500-757, Korea.
Park
Ki-Deok
KD
Huang
Shing-Jong
SJ
Liu
Shang-Bin
SB
Lee
Hong-Joo
HJ
D003460:Crystallization / Q000379:methods; D046911:Macromolecular Substances / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D010636:Phenols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014979:Xenon Isotopes / Q000737:chemistry*
D046911:Macromolecular Substances; D008567:Membranes, Artificial; D010636:Phenols; D011108:Polymers; D014979:Xenon Isotopes; C009495:titanium dioxide; C027420:polyphenylene oxide; D014025:Titanium