Diamanti M.V. – 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 [...]

Characterization of durability and photocatalytic properties of TiO2 cement-based materials

Luongo N., Massari S., Spagnolo S.L., Diamanti M.V., Daniotti B., Pedeferri M.P., Politecnico di Milano, IT

The issue of maintenance is steadily emerging in the framework of the built environment, with a specific focus on durability and service life planning and sustainability evaluations, as the definition of a maintenance plan for [...]

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 [...]

Enhancement of pure titanium localized corrosion resistance by chemical oxidation

Prando D., Brenna A., Diamanti M.V., Ormellese M., Pedeferri M.P., Politecnico di Milano, IT

Titanium and its alloys are widely appreciated for their high corrosion resistance in environments that are critical even for high-end stainless steel (duplex UNS S31803 and UNS S32750), such as concentrated chlorides [1]. This resistance [...]

Immobilization of TiO2 nanopowders in multilayer fluorinated coatings for highly efficient clear and turbid wastewater remediation

Diamanti M.V., Bettini L.G., Milani P., Sansotera M., Persico F., Navarrini W., Pedeferri M.P., Politecnico di Milano, IT

The use of nanosized photocatalytic TiO2 in suspension or slurry type reactors is well reported. However, the industrial feasibility of such systems is limited, on account of the low quantum efficiency reported for slurry processes [...]

Improving the optical-radiative properties of TiO2 containing coatings – a side effect of air purification

Paolini R., Sleiman M., Pedeferri M.P., Diamanti M.V., Politecnico di Milano, IT

A manifold positive contribution to climate change mitigation and in the improvement of air quality of built environments can be provided by the use of titanium dioxide (TiO2), also – but not exclusively – as [...]

Perfluoropolyethers as superhydrophobizing agents for carbon-based surfaces of fuel cell gas diffusion layers

Navarrini W., Sansotera M., Diamanti M.V., Pedeferri MP., Gola M., Dotelli G., Politecnico di Milano, IT

Perfluoropolyether (PFPE) peroxide has been employed in the functionalization of conductive carbon-based materials to confer them the highly hydrophobic surface properties of the perfluorinated materials. The thermal decomposition of a linear PFPE peroxide produced PFPE [...]

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 [...]

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 [...]

Evaluation of PCM-cardboard composite materials in dynamic thermal conditions

Musitelli M., Garbagnoli P., Diamanti M.V., Del Curto B., Pedeferri M., Politecnico di Milano, IT

In recent years, the use of smart materials to resolve environmental problems in building applications has been increasingly widespread. In particular, Phase Change Materials (PCMs) are used to improve thermal performance of air conditioning system [...]