Figure 5.
(a) FTIR spectrum of the naked TiO2 and the islandlike TiO2@SiO2 composite. (b) Representative XPS spectra of the naked TiO2 and islandlike TiO2@SiO2 composite. (c–e) High-resolution XPS spectra of O 1s, Ti 2p, and Si 2p.
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