研究目的
To develop a floating photocatalytic device based on TiO2 photocatalyst immobilized over a novel tailored ter-polymer for the remediation of contaminants in water and volatile species close to the water surface.
研究成果
The developed floating photocatalytic device, based on a novel ter-polymer substrate, demonstrated promising results in the degradation of both water and gas phase pollutants under UV and simulated solar irradiation. The device showed good stability and recyclability, making it a potential candidate for large-scale water basin remediation.
研究不足
The study acknowledges the challenges in achieving high photocatalytic activity with low TiO2 content and suggests future work to optimize the TiO2 amount and explore alternative architectures like fibers and sponges.
1：Experimental Design and Method Selection:
The study involved the synthesis of a novel ter-polymer substrate and the preparation of a multilayer floating device for photocatalytic remediation. The methodology included free radical polymerization, solvent casting, corona treatment, and spray coating for the deposition of SiO2 and TiO2 layers.
2：Sample Selection and Data Sources:
The study used methylmethacrylate, α-methylstyrene, and perfluoroctyl methacrylate as co-monomers for the ter-polymer synthesis. The photocatalytic activity was tested using ethanol and tetracycline as model pollutants.
3：List of Experimental Equipment and Materials:
Equipment included a Krüss EasyDrop for water contact angle measurements, a Shimadzu UV2600 spectrophotometer for UV-vis transmittance spectra, and a Zeiss LEO-1430 for SEM imaging. Materials included Hombikat UV100 TiO2 nanoparticles and various chemicals for polymer synthesis.
4：Experimental Procedures and Operational Workflow:
The ter-polymer was synthesized via free radical polymerization. The polymer film was prepared by solvent casting, followed by corona treatment and deposition of SiO2 and TiO2 layers via spray coating. The device was tested for photocatalytic activity under UV and simulated solar irradiation.
5：Data Analysis Methods:
The photocatalytic activity was monitored using gas chromatography for ethanol degradation and UV-vis spectrophotometry for tetracycline degradation. The stability and recyclability of the device were also evaluated.
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