NAMS 2002 Workshop - ICOM 2008

EPR/Ago/p-benzoquinone composite showed peaks at 1664 and 1640 cm -1 right
after propylene exposure. The intensities of the both peaks at 1664 and 1640 cm -
1 decreased and a new peak at 1649 cm -1 became dominant with increasing
propylene exposure time. These results indicated that the new peak at 1649 cm -1
was presumably due to the partial electron transfer from the C=C bond of
propylene to the partially positively charged surface of the silver nanoparticles.
Conclusively this is the first attempt to use silver nanoparticles activated by an
electron acceptor such as p-benzoquinone as olefin carriers for facilitated
transport. The activated or partially positively charged surface of silver
nanoparticles caused interactions or complexation with olefin molecules, such as
propylene and ethylene, as supported by FT-IR spectroscopy and ab-initio
calculations.
Reference
(1) Y. S. Kang, S. W. Kang, H. Kim, J. H. Kim, J. Won, C. K. Kim, and K. Char, Advanced
Materials, 2007, 19, 475-479