titanium dioxide – TechConnect Briefs

Photocatalytic Activity of Immobilized Nano-TiO2 in Complex Wastewaters: Case Study of Multiple Dye Composition

Bellè U., De Flaviis L., Diamanti M.V., Ormellese M., Pedeferri M., Politecnico di Milano, IT

Titanium dioxide (TiO2) is widely investigated for its photocatalytic properties and for the possibility of obtaining nanotubular oxide films with high specific surface area directly immobilized on a substrate. In the present work, nanotubular TiO2 [...]

Photocatalytic activity of nanotubular TiO2 films obtained by anodic oxidation: a comparison in gas and liquid phase

Sanabria B.E., Strini A., Schiavi L., Diamanti M.V., Pedeferri M.P., Politecnico di Milano, IT

The immobilization of nanostructured photocatalysts is of great importance in the purification of both polluted air and liquids (e.g. industrial wastewaters). Titanium dioxide films with nanotubular morphology and good photocatalytic efficiency in both environments can [...]

Formulation, characterization and applications of titanium dioxide, polyoxometalates and silver nanocomposites

Kumar Daima H., Amity University Rajasthan, IN

In the recent past, Titanium dioxide (TiO2), polyoxometalates (POMs) and silver (Ag) based nanomaterials have been employed for various biological and industrial applications. TiO2 possesses excellent photocatalytic activity; POMs are keggin ions with exceptional biomedical [...]

Memristor fabrication and characterization based on TiO2

Diamanti M.V., Pisoni R., Cologni A., Corinto F., Pedeferri M.P., Politecnico di Milano, IT

Today, Si-based flash memory devices represent the most prominent nonvolatile data memory (NVM) because of high density and low fabrication costs. However, they suffer from low endurance, low write speed, and high voltages required for [...]

Near Infrared Sintering of a cost effective Roll to Roll water purification coating

Mabbett I., Brennan D., Lavery N.P., Charbonneau C.M.E., Khan K., Woods R., Pursglove A.B., Bryant D.T., Watson T.M., Worsley D.A., Swansea University, UK

Near Infrared (NIR)at 250kW/m2 has been shown to sinter titanium dioxide on metal based substrates in just 12.5s. This coupled with a screen printable hybrid titania paste with nano-particulate anatase attached to a mesoporous framework [...]

Advanced oxidation processes for water purification: compact vs nanoporous anodic TiO2

Piazza V., Diamanti M.V., Mazare A., Pedeferri MP., Schmuki P., Politecnico di Milano, IT

In the last years, research on TiO2 engineering has been dedicated mostly to thin films for environmental and energetic applications, such as advanced oxidation processes for water purification and dye-sensitized solar cells. Anodic oxidation can [...]

Exposure Evaluation of Airborne Titanium Dioxide from Use in Spray Sunscreens

Kreider M.L., Unice K.M., Madl A.K., Cardno ChemRisk, US

In this study, we simulated consumer application of a spray sunscreen containing nanoscale TiO2 to determine the nature of consumer TiO2 exposure from the product’s use (e.g. form of TiO2 [primary particle, aggregate/agglomerate], size of [...]

Femtosecond transient absorption of plasmonic gold nanoparticles embedded in mesoporous TiO2 matrix: electron injection study

Aiboushev A., Kostrov A., Gostev F., Nadtochenko V., N.N. Semenov Institute of Chemical Physics Russian Academy of Sciences, RU

Gold nanoparticles (AuNP) embedded in mesoporous films of wide band gap semiconductors such as TiO2 are used for promising applications in solar cells, visible light-sensitive photocatalysts, and biosensors developed on the basis of the surface [...]

Structural characterization and photocatalytic activity of electrospun TiO2 and Ce-dopedTiO2 nanofibers

Sang-urai S., Worayingyong A., Mansiri S., Smith M.F., Seraphin S., Kasetsart University, TH

Mixed phase TiO2 and Ce-doped TiO2 nanofibers with different content (0.5, 2.0, 8.0%) ofcerium ions were prepared by a sol-gel electro-spinning method. Results from SEM showed nobeads on the undoped-TiO2 and Ce-doped TiO2 nanofibers with [...]

Self-cleaning ability and cooling effect of TiO2-containing mortars

Diamanti M.V., Paolini R., Zinzi M., Ormellese M., Fiori M., Pedeferri MP., Politecnico di Milano, IT

This work focuses on the characterization of a self-cleaning and photocatalytic system for building façades, aimed at improving urban surfaces and the surrounding air quality, and decreasing energy consumption. Mortars containing anatase TiO2 nanopowders were [...]