研究目的
To investigate the preparation and properties of porous SiO2-TiO2 composite photocatalyst for the photocatalytic degradation of methyl orange.
研究成果
The porous SiO2-TiO2 photocatalyst prepared at 500 °C for 3 h showed high photocatalytic activity for methyl orange degradation, following first-order kinetics. The study demonstrates the potential of porous SiO2-TiO2 materials in environmental pollutant treatment.
研究不足
The study focuses on the degradation of methyl orange under specific conditions; the applicability to other pollutants or under different environmental conditions is not explored.
1：Experimental Design and Method Selection:
A porous SiO2-TiO2 catalyst was prepared through a co-sol-gel process using PEG1000 as the template.
2：Sample Selection and Data Sources:
Tetrabutyl titanate and ethyl silicate were used as precursors.
3：List of Experimental Equipment and Materials:
UV lamp, spectrophotometer, Millipore filter.
4：Experimental Procedures and Operational Workflow:
The gel was dried and calcined at different temperatures, then used for photocatalytic degradation of methyl orange under UV irradiation.
5：Data Analysis Methods:
Methyl orange concentration was measured by spectrophotometry, and degradation kinetics were analyzed.
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