A study on wettability properties of rutile-phase TiO2 nanostructure film
Titanium dioxide (TiO2) is a very well-known material for applications such as photocatalysis, solar cell and self-cleaning applications. This material can also be coated on glass surfaces, especially for car windows and building windows as well. Glass in the market nowadays, the material that...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1156/1/24p%20SYAFA%20SYAHIRAH%20TAIB.pdf http://eprints.uthm.edu.my/1156/2/SYAFA%20SYAHIRAH%20TAIB%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1156/3/SYAFA%20SYAHIRAH%20TAIB%20WATERMARK.pdf http://eprints.uthm.edu.my/1156/ |
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| Summary: | Titanium dioxide (TiO2) is a very well-known material for applications such as
photocatalysis, solar cell and self-cleaning applications. This material can also be
coated on glass surfaces, especially for car windows and building windows as well.
Glass in the market nowadays, the material that coated on the glass weakens as time
passes and harmful to the environment. Since TiO2 material has advantages such as
being inert and environmentally friendly, thus the study of the wettability properties
of rutile-phase TiO2 film is introduced for self-cleaning application. TiO2 is fabricated
using the hydrothermal synthesis method at 150°C. The fluorine-doped tin oxide
(FTO) is used as a substrate to grow the TiO2 nanostructure by mixing hydrochloric
acid (HCl), deionised water (DI) and titanium (IV) butoxide (TBOT). The effects of
the duration of the hydrothermal process, the volume of HCl, the volume of TBOT as
well as the use of surfactant hexadecyltrimethylammonium bromide (HTAB) toward
the synthesis growth of nanorods are thoroughly evaluated. The samples are analysed
by using X-Ray Diffraction (XRD) for structural properties, Field Emission Scanning
Electron Microscopy (FE-SEM) for morphology structure and water contact angle
(WCA) measurement for wettability properties. FE-SEM shows that the layer of TiO2
nanorods is successfully grown on the FTO substrate. The contact angle results for
different hydrothermal reaction times and different HCl and TBOT volumes reveal
that TiO2 has wettability properties of hydrophilicity (<90°). Even though different
structures are achieved from different parameters, none of the samples exhibit
hydrophobic characteristics. From the XRD data analysis, all of the samples are rutile�phase TiO2. The optimum amount of hydrothermal reaction time, volume of HCl and
volume of TBOT are at 16 hours, 130 mL and 5 mL, respectively, where TiO2 has a
crystalline structure with fine tetragonal shape and the highest contact angle. The use
of HTAB have a change in wettability properties as it makes the sample become super�hydrophilic compared to as-prepared sample which is hydrophilic only. |
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