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The porous TiO2 were prepared by the sol-gel method and via urea-formaldehyde resins templates route from commercial TiOSO4. And porous TiO2 were sintered for 3 h at 500, 600, 700, 800 and 900 °C. The results show that the porous TiO2 is mainly composed of anatase TiO2 nanocrystals with a size of 10∼50 nm and the crystalline size of TiO2 increases with increasing sintering temperature. Porous TiO2...
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