Abstract
Titania and its polymorphs are one of the most studied semiconductor photocatalysts. Herein, the P25 titania was used as a precursor to modify the phase and structure with microwave-assisted hydrothermal and sonochemical methods in presence of alkaline hydrazine. The outcome results show the cotton ball structure titanate composite phases (nanotubes, nanosheets and nanoparticles) and monoclinic titanate phase (TiO2-B) with microwave-assisted hydrothermal method and sonochemical method, respectively. The nitrogen doping was confirmed by FTIR and DRS in modified TiO2. And some visible light absorption was observed in modified TiO2 due to the nitrogen doping. The composite phase titanate having cotton ball structure was found to be efficient for methicillin-resistant superbug Staphylococcus aureus (MRSA) inactivation. Herein, we also reported the submicron TiO2-B sword like morphology fabricated by sonochemical method for the first time in presence of alkaline hydrazine.
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