研究目的
To synthesize mesoporous TiO2 using evaporation induced self-assembly method and evaluate its photocatalytic activity in decomposing formaldehyde under ultraviolet light irradiations.
研究成果
The mesoporous TiO2 synthesized by evaporation induced self-assembly method exhibits high photocatalytic activity in decomposing formaldehyde under UV light, with potential applications in improving indoor air quality.
研究不足
The study focuses on the synthesis and photocatalytic activity of mesoporous TiO2 under UV light, but does not explore its performance under visible light or the long-term stability of the material.
1：Experimental Design and Method Selection:
The mesoporous TiO2 was synthesized by the evaporation induced self-assembly using tetrabutyl titanate, acetylacetone, anhydrous alcohol, EO-PO type polyether P123, and nitric acid as starting materials.
2：Sample Selection and Data Sources:
The microstructure and morphology of the as-synthesized mesoporous TiO2 were studied using small angle X-ray diffraction, wide angle X-ray diffraction, high-resolution transmission electron microscopy, and N2 isothermal adsorption-desorption.
3：List of Experimental Equipment and Materials:
Bruker AXS D8 Advance X-ray diffractometer, high-resolution transmission electron microscopy (HR-TEM, JEM-3010), Quantachrome Autosorb-1 analyzer.
4：Experimental Procedures and Operational Workflow:
The synthesis process involved mixing tetrabutyl titanate with acetyl acetone and EtOH, then adding a solution of P123, deionized water, and HNO3 in EtOH, followed by stirring, evaporation, and calcination.
5：Data Analysis Methods:
The photocatalytic activity was measured by degrading formaldehyde under UV light and analyzing the concentration with a UV-visible spectrophotometer.
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