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Isotropic photo-decomposition of spherical organic polymers on rutile TiO₂(110) surfaces
Nobuyuki Ishida1, Tamaki Iwasaki, Daisuke Fujita
1Advanced Nanocharacterization Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan. ISHIDA.Nobuyuki@nims.go.jp
Abstract:
We observed the photo-decomposition process of polystyrene latex (PSL) spheres on a rutile TiO₂(110) single crystal surface by using atomic force microscopy. During the decomposition process, both the height and width of the PSL spheres linearly decreased with the irradiation time in a similar way from the beginning, suggesting that the PSL spheres are isotropically decomposed. This indicates that the interface between the PSL spheres and the TiO₂ surface is not a dominant reaction site, as expected from normal photocatalytic reactions.
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