Facile synthesis of mesoporous bicrystallized TiO2(B)/anatase (rutile) phases as active photocatalysts for nitrate reduction

作者：Mohamed Mohamed Mokhtar^*; Asghar B H M; Muathen H A

来源：Catalysis Communications, 2012, 28: 58-63.

DOI：10.1016/j.catcom.2012.08.012

• Nitrate photoreduction
• Polymeric templates
• Bicrystalline TiO2 (B)/anatase
• Characterization

Polyhedral and wormhole-like mesoporous titania nanoparticles composed of TiO2(B) and anatase (rutile) were successfully synthesized by hydrothermal self-assembly method employing, respectively polyacrylamide (AA), polyvinyl alcohol (VA) and polyoxyethyl lauryl ether (ELE) as templates. TEM, X-ray diffraction, FOR, UV-vis DR spectroscopy and N-2 sorptiometry were used for the characterization of surface morphology, phase composition, electronic properties and surface texturing of the synthesized catalysts. The photocatalytic activity was evaluated via the photo-reduction of nitrate in aqueous solution under UV light irradiation. The TiO2 catalyst derived from ELE presented the highest activity due to the alternate structure of anatase and TiO2(B) phases.

• 出版日期2012-11-5