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Report No.
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Structure and property of titanium dioxide nanosheet

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

The structure of nitrogen (N)-doped titanium dioxide (TiO$$_2$$), which exhibits an improved photo-catalytic property, was investigated by small-angle neutron (SANS) and X-ray scattering (SAXS) methods. The N-doped TiO$$_2$$ nanosheet showed a SANS profile, of which q-dependence is nearly identical to that of undoped TiO$$_2$$ nanosheet, however, of which intensity is three times as large as that of undoped TiO$$_2$$ nanosheet. As for the SAXS measurements, hardly any difference was observed between undoped TiO$$_2$$ nanosheet and N-doped one. For N-doped nanosheet, a core-shell structure where TiO$$_2$$ particles locate at the center and N atoms surround the surface of TiO$$_2$$ particles was deduced from the analysis of those obtained SANS and SAXS profiles by taking account of the difference in scattering contrast between neutron and X-ray for each component, i.e., Ti, O, and N atoms.

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