photocatalysis – Page 5 – TechConnect Briefs

Rhodamine B degradation efficiency of differently annealed titanium dioxide nanotubes

Diamanti M.V., Stercal F., Pedeferri MP., Politecnico di Milano, IT

This paper presents an investigation over the photoefficiency of nanotubular titanium dioxide films in the degradation of organic pollutants: rhodamine B was chosen as model reactant. The effects of thermal treatments in several atmospheres on [...]

Preparation of nitrogen-doped mesoporous TiO2 with a room-temperature ionic liquid

Hsiung T-L, Wang H.P., Wei Y-L, National Cheng Kung University, TW

A nitrogen-doped mesoporous TiO2 (N-TiO2) was synthesized using a room-temperature ionic liquid (RTIL) (C4mimBF4) as the template. By 1H NMR (Figure 1), interactions between Ti and nitrogen of the RTIL are observed. The nanosize mesoporous [...]

Tailored nanoscaled TiO2 dispersions for photocatalytic applications

Pilotek S., Tabellion F., Gossmann K., Buhler Inc., US

The use of the photocatalytic activity of nanoscaled anatase particles is intriguing. Whereas the effect has been known for a long time it is still a challenge to make the effect useful in everyday applications. [...]

Effect of surfactant on TiO2/UV mediated heterogeneous photocatalytic degradation of DDT in contaminated water

Sinha S., Tapia-Orozco N.G., Acosta-Ramírez D.S., Rodríguez-Vázquez R., CINVESTAV, MX

The toxic effects from the use of pesticides are of great concern to the environment. The pesticides containers are not treated according to the Mexican normativity and hence increase the pollutant levels in the environment, [...]

Ordered mesoporous films of TiO2 as highly efficient photocatalysts for clean environment

Rathousky J., Kalousek V., Walsh C., J. Heyrovsky Institute of Physical Chemistry, CZ

Photocatalytic oxidation is a promising technology for the purification of air. Providing the surfaces of objects with a finish which is photocatalytically active and exhibits stable illumination-induced superhydrophilicity, is a promising route how to render [...]

Photoactivity of nitrogen-doped anodic TiO2 under UV and VIS light irradiation

Diamanti M.V., Ormellese M., Pedeferri M.P., Politecnico di Milano, IT

Titanium dioxide is probably the most efficient among the known photocatalysts, and undoubtedly the most studied one. An appealing route to tune obtain TiO2 films morphology and structure is to exploit the anodizing process to [...]

Effect of surfactant on TiO2/UV mediated heterogeneous photocatalytic degradation of DDT in contaminated water

Sinha S., Tapia-Orozco N.G., Acosta-Ramírez D.S., Rodríguez-Vázquez R., CINVESTAV, MX

The toxic effects from the use of pesticides are of great concern to the environment. The pesticides containers are not treated according to the Mexican normativity and hence increase the pollutant levels in the environment, [...]

TiO2-Ag Porous Nanocomposites for Advanced Photocatalytic Processes

Baia L., Baia M., Baia L., Baia M., Vasiliu F., Diamandescu L., Peter A., Cosoveanu V., Danciu V., Babes-Bolyai University, RO

The photo-assisted catalytic decomposition of organic pollutants from water and air by employing titanium dioxide as photocatalysts is a very promising method. TiO2 based aerogels are porous solid materials with high surface area, ultra-low density [...]

TiO2-Ag Porous Nanocomposites for Advanced Photocatalytic Processes

Baia L., Baia M., Baia L., Baia M., Vasiliu F., Diamandescu L., Peter A., Cosoveanu V., Danciu V., Babes-Bolyai University, RO

The photo-assisted catalytic decomposition of organic pollutants from water and air by employing titanium dioxide as photocatalysts is a very promising method. TiO2 based aerogels are porous solid materials with high surface area, ultra-low density [...]

Titanium Dioxide Nanostructured Coatings: Application in Photocatalysis and Sensors

Byrne J.A., Hamilton J.W.J., McMurray T.A., Dunlop P.S.M., Donaldson V.J.A., Rankin J., Dale G., Al Rousan D., University of Ulster, UK

This paper presents results concerning the fabrication, characterisation, and application of nano-structured titanium dioxide films. Applications include photocatalytic purification of water, “self-decontaminating” surfaces, and electrochemical biosensing.