研究目的
Investigating the synthesis of Ag-doped TiO2 nanoparticles using a molten-salt method for enhanced photocatalytic and antibacterial applications under solar light.
研究成果
The study successfully synthesized Ag-doped TiO2 nanoparticles with enhanced photocatalytic and antibacterial properties using a simple molten-salt method. The optimal Ag doping concentration was found to be 5%, which provided the highest photocatalytic activity under UV and visible light irradiation. The method is economical and environmentally friendly, suitable for large-scale production.
研究不足
The study is limited to the synthesis and characterization of Ag-doped TiO2 nanoparticles with Ag content up to 10%. The antibacterial and photocatalytic tests were conducted under controlled laboratory conditions, which may not fully replicate real-world applications.
1：Experimental Design and Method Selection:
A single-step molten-salt synthesis method was used to prepare Ag-doped TiO2 nanoparticles with varying Ag content (3-10%). The method involved calcination of a mixture of AgNO3 and TiO2 powder at 700°C for 1 h.
2：Sample Selection and Data Sources:
AgNO3 and TiO2 powders were purchased from Merck. Bacterial strains Escherichia coli and Staphylococcus aureus were used for antibacterial tests.
3：List of Experimental Equipment and Materials:
SEM (LEO 1430VP, Germany), EDX, XRD (Philips, The Netherlands), UV–vis spectrophotometer (Scinco S4100, South Korea), and other standard laboratory equipment.
4：Experimental Procedures and Operational Workflow:
The nanoparticles were characterized using SEM, EDX, XRD, and UV–vis DRS. Antibacterial tests were performed using disc diffusion assay, and photocatalytic activity was evaluated by methyl orange degradation under UV and visible light.
5：Data Analysis Methods:
The crystallite size was calculated using the Scherrer equation, and bandgap energies were determined from UV–vis DRS data.
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