研究目的
Investigating the effect of silver (Ag0) and platinum (Pt0) metallic nanoparticles on WO3 film for improving photocurrent and progesterone degradation under polychromatic irradiation.
研究成果
The study concludes that WO3 films functionalized with Ag0 and Pt0 nanoparticles exhibit enhanced photoelectrochemical performance and photocatalytic activity for progesterone degradation, especially in the EHP configuration. The functionalized electrodes show higher stability and efficiency, making them promising candidates for water treatment applications.
研究不足
The study is limited by the small size of metal particles on modified WO3 films, which may not be easily observable, and the potential for photocorrosion of the WO3 electrode during multiple cycles of utilization.
1：Experimental Design and Method Selection
The study employed WO3 films modified with Ag0 and Pt0 nanoparticles to investigate their photoelectrochemical properties and photocatalytic activity for progesterone degradation. The methodology included the preparation of WO3 films by the drop-casting method, functionalization with metallic nanoparticles via photoreduction, and characterization using XRD, UV-Vis spectroscopy, and FE-SEM.
2：Sample Selection and Data Sources
Progesterone hormone in aqueous solution was used as the pollutant. The initial concentration was 0.35 mg L-1 dissolved in Na2SO4 0.1 mol L-1 aqueous solution as the supporting electrolyte.
3：List of Experimental Equipment and Materials
X-ray diffractometer (LabX XRD-6000), UV-Vis spectrophotometer (Shimadzu UV-2600), FE-SEM (FEI Quanta FEG 250), galvanostat/potentiostat (AutolabPGSTAT 302-N), and a metallic vapor discharge lamp (HQI-TS NDL) for irradiation.
4：Experimental Procedures and Operational Workflow
The experimental procedure involved the preparation of WO3 films, their functionalization with Ag0 and Pt0 nanoparticles, characterization of the films, and evaluation of their photocatalytic activity under polychromatic irradiation in HP and EHP configurations.
5：Data Analysis Methods
The degradation efficiency was calculated based on UV-Vis absorbance measurements. The photoelectrochemical properties were analyzed using cyclic voltammetry and linear sweep voltammetry.
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