研究目的
To fabricate a double-function SiO2-DMS coating with antireflection and superhydrophobic properties using a cost-effective and time-efficient sol-gel method.
研究成果
The SiO2-DMS coating successfully combined antireflection and superhydrophobic properties, with a water contact angle of 153°, water slide angle <10°, and average transmittance of 96.07% at 300-800 nm. This cost-effective and rapid method is suitable for optical devices in humid environments, with future studies possibly focusing on durability and broader applications.
研究不足
The paper does not explicitly mention limitations, but potential areas for optimization could include the scalability of the sol-gel method, long-term stability of the coatings, and performance under extreme environmental conditions.
1：Experimental Design and Method Selection:
The experiment utilized a sol-gel method for fabricating SiO2 nanoparticles and a solvothermal method for modifying them with hexamethyldisilazane (HMDS) to achieve superhydrophobicity. Spin coating was employed to apply the coatings.
2：Sample Selection and Data Sources:
Samples included SiO2 coating, SiO2-DMS coating, and bare glass for comparison. Data were obtained from optical transmission spectra, water contact angle measurements, scanning electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy.
3：List of Experimental Equipment and Materials:
Materials included tetraethoxysilane, ammonium hydroxide, anhydrous methanol, hydrochloric acid, hexamethyldisilazane, and hexane. Equipment included a UV-visible spectrophotometer (UV-3600, Shimadzu), KRUSS DSA100 angle system, scanning electron microscope (SEM, Sigma 500), atomic force microscope (AFM, NT MDT Solver Nano), Fourier transform infrared spectrometer (FT-IR, Thermo Scientific Nicolet iS10), and X-ray photoelectron spectroscope (XPS, Thermo Scientific ESCALAB 250Xi).
4：Experimental Procedures and Operational Workflow:
SiO2 sol was prepared by dissolving tetraethoxysilane and ammonium hydroxide in methanol, adding hydrochloric acid, stirring, adding more ammonium hydroxide to form a gel, diluting with methanol, and ultrasonicating. SiO2-DMS sol was prepared by mixing HMDS, hexane, and SiO2 sol in a specific ratio, reacting at 80°C for 10 hours. Coatings were applied via spin coating at 5000 rpm for SiO2 and 6000 rpm for SiO2-DMS.
5：Data Analysis Methods:
Data were analyzed using the specified instruments to measure transmittance, contact angles, surface morphology, and chemical composition.
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