研究目的
To present the differences in the Zeta potential and in the Infrared spectra data obtained from the characterization of silanized titanium dioxide particles, using two different solvents as reaction media: ethanol and toluene.
研究成果
The reaction media induce differences in the morphology of the coating and in the data obtained from the Zeta potential and the Infrared spectra. Silanization in toluene favors the encapsulation of the particles and a controlled reaction is carried out on the surface of each particle.
研究不足
The study is limited to the characterization of silanized titanium dioxide particles using only two solvents (ethanol and toluene) as reaction media. The findings may not be generalizable to other solvents or reaction conditions.
1：Experimental Design and Method Selection:
TiO2 nanoparticles were modified superficially by two different silanization processes using ethanol and toluene as reaction media. The coupling agent: 3-aminopropyl-triethoxy-silane (APTES) was added at a ratio 5:1 of (TiO2/APTES).
2：Sample Selection and Data Sources:
Titanium dioxide (TiO2) particles with an average diameter of 350 nm and a crystalline structure of rutile were used.
3：List of Experimental Equipment and Materials:
Transmission Electron Microscope JEOL TEM-1010, Perkin-Elmer FTIR-ATR spectrometer Model Spectrum 100, Delsa Nano C particle analyzer A
4：Experimental Procedures and Operational Workflow:
538 For TEM, nanoparticles were suspended in distilled water and placed on copper grids coated with carbon. For FTIR, analyses included a range of wave number from 4000 to 1000 cm^-1 with 60 scans. For Zeta potential, tests were performed using solutions of NaOH and HCl at a concentration of 0.001% w/V to adjust the pH value.
5：001% w/V to adjust the pH value.
Data Analysis Methods:
5. Data Analysis Methods: The stability of the TiO2 particles and the silanized particles (S-TiO2) were evaluated in water through their precipitation time, driven by the gravity force at different pH in a range of 2–12.
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