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TiO2 nanocrystals were prepared by sol–gel/solvothermal processing and modified by the addition of W precursor before the solvothermal step. The W: Ti nominal atomic ratio (RW) was fixed to 0.16 and 0.64. Surface modification of TiO2 occurred for RW = 0.16 while for RW = 0.64 nanocomposites with WO3 nanocrystals were obtained after heat-treatment at 500 °C. Pure TiO2 proved to be very poorly performing...
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