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Report No.
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Structure and property of N-doped titanium dioxide catalyst

Yamaguchi, Daisuke; Koizumi, Satoshi; Hasegawa, Yoshio*; Hishinuma, Yukio*; Suzuki, Masashi*; Kodama, Hiroto*; Onuma, Masato*; Oba, Yojiro*

From the combined SANS and SAXS profiles, both of the neat and N-doped TiO$$_{2}$$ catalyst was characterized to have a sheet-like shape with thickness of several tens to hundreds of nm and to be composed of sub-unit TiO$$_{2}$$ particles of several nm. On the SANS profile, the N-doped TiO$$_{2}$$ catalyst showed a q-dependence nearly identical to that of neat TiO$$_{2}$$ catalyst, however, of which intensity is three times as large as that of neat TiO$$_{2}$$ catalyst. On the other hand, by SAXS measurement, hardly any difference was observed between neat TiO$$_{2}$$ catalyst and N-doped one. The analysis of those obtained SANS and SAXS profiles suggests that the localization of doped N atoms at the surface of TiO$$_{2}$$ particles and hence TiO$$_{2}$$-core/N-shell structure can be inferred for the N-doped TiO$$_{2}$$ material.

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