| Autor: |
Itoh, Haruka, Yanagishita, Takashi |
| Zdroj: |
The Journal of Physical Chemistry - Part C; 20240101, Issue: Preprints |
| Abstrakt: |
Membrane filters coated with TiO2are promising candidates for membrane filters that have efficient separation and decomposition of harmful organic substances. Opaque membranes do not allow UV light to reach the interior of the membrane; therefore, TiO2coated inside the membrane cannot be used as a photocatalyst. To improve the photocatalytic properties of TiO2-coated membrane filters, it is important to form a TiO2coating on a transparent membrane. Herein, TiO2-coated anodic porous alumina (APA) membranes were fabricated by the atomic layer deposition of TiO2. The experimental results showed that the transparency of the APA membrane increased with the regularity of pore arrangement. The degradation of methylene blue on TiO2-coated APA membranes was investigated to evaluate the photocatalytic properties of the membranes, and it was found that APA membranes with an ordered pore arrangement and higher transparency exhibited photocatalytic properties higher than those with a disordered pore arrangement and lower transparency. A comparison of the photocatalytic properties of TiO2-coated APA and TiO2-coated porous glass membranes with sponge-like structures and large specific surface areas showed that APA membranes with higher transparency exhibited higher photocatalytic properties than porous glass membranes with lower transparency. This study opens a new path for an innovative strategy to produce membrane filters with excellent photocatalytic properties. |
| Databáze: |
Supplemental Index |
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