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Nanosized Cu-doped TiO 2 film was prepared by the sol–gel spin coating technique. XPS analysis showed that Cu atoms had been successfully doped into TiO 2 lattice, which hence modified the surface chemical composition. As a result, the Cu-doped TiO 2 thin film possessed a superhydrophilic surface with a water contact angle (WCA) only 5.1° and exhibited excellent anti-fogging...
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