研究目的
To modify the phase and structure of P25 titania with microwave assisted hydrothermal and sonochemical methods in presence of alkaline hydrazine for Staphylococcus aureus inactivation.
研究成果
The modification of P25 titania with alkaline hydrazine using microwave assisted hydrothermal and sonochemical methods resulted in different polymorphs with nitrogen doping, making them responsive to visible light. The cotton ball morphology was effective for bacterial inactivation, while the TiO2-B phase showed potential for other applications.
研究不足
The TiO2-B phase synthesized by sonochemical method showed poor bacterial inactivation possibly due to its large size.
1:Experimental Design and Method Selection:
The P25 titania was modified using microwave assisted hydrothermal and sonochemical methods in presence of alkaline hydrazine.
2:Sample Selection and Data Sources:
Commercial P25 titania was used as a precursor.
3:List of Experimental Equipment and Materials:
P25 Degussa titania, hydrazine hydrate, NaOH, polyethylene bottle, ball mill, microwave assisted hydrothermal system, sonochemical processor.
4:Experimental Procedures and Operational Workflow:
The mixture of P25 titania and alkaline hydrazine was ball milled, then treated by microwave assisted hydrothermal process or sonochemical process, washed, dried, and calcined.
5:Data Analysis Methods:
XRD and FESEM for phase and morphology analysis, FTIR and DRS for nitrogen doping confirmation, antibacterial activity test against S. aureus.
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