Studies of surface wettability conversion on TiO(sub 2) single-crystal surfaces

Article Abstract:

The mechanism of reversible surface wettability conversion on titanium dioxide single crystal surfaces has been investigated via contact angle measurement and X-ray photoelectron spectroscopy. An ultraviolet light illuminated TiO(sub 2) single-crystal surface had a zero degree contact angle for both oil and water, suggesting a highly amphiphilic surface against its original hydrophobic surface. The surface reactions took place at the uppermost layers of the single crystals, and oxygen bridging sites played an essential role in the surface wettability conversions.

Crystals, Surface chemistry

---

Kinetic analysis of the photocatalytic degradation of gas-phase 2-propanol under mass transport limited conditions with TiO2 film photocatalyst

Article Abstract:

A kinetic analysis of the degradation of gas-phase 2-propanol was conducted using a TiO2 film photocatalyst in a batch-type reactor with comparatively high-intensity ultraviolet illumination. Results showed the degradation rate gradually saturated towards completely mass-transport-limited conditions. The one-dimensional diffusion equation modeling of concentration changes of 2-propanol under mass transport-limited conditions resulted to the mapping of various regions in terms of mass transport vs light intensity control.

Thin films, Propanols

---

Enhancement of the photoinduced hydrophilic conversion rate of TiO(sub 2) film electrode surfaces by anodic polarization

Article Abstract:

Photoinduced hydrophilicity of the TiO(sub 2) surfaces by UV light irradiation in an aqueous solution is investigated. This property has opened various new applications of TiO(sub 2) coatings such as antifogging and selfcleaning.

Analysis, Spectra, Water chemistry, Titanium compounds, Aqueous solution reactions

Similar abstracts:

• Abstracts: Spectroelectrochemical investigation of surface states in nanostructured TiO(sub 2) electrodes. Time-resolved optical spectroscopy of heterosupramolecular assemblies based on nanostructured TiO(sub 2) films modified by chemisorption of covalently linked ruthenium and viologen complex components
• Abstracts: Structure and dynamics of a Bronsted acid site in a zeolite: ab initio study of hydrogen sodalite. On the role of Ti(IV) as a Lewis acid in the chemistry of titanium zeolites: Formation, structure, reactivity, and aging of Ti-peroxo oxidizing intermediates: A first principles study

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.