Flow-through Gas Phase Photocatalysis Using TiO Nanotubes on Wirelessly Anodized 3D-Printed TiNb Meshes.

In this work, for the first time 3D Ti-Nb meshes of different composition, i.e., Ti, Ti-1Nb, Ti-5Nb, and Ti-10 Nb, were produced by direct ink writing.

Photocatalytic degradation of gaseous pollutants on nanostructured TiO films of various thickness and surface area.

This work deals with the preparation of TiO nanoparticulate layers of various mass (0.05 mg/cm to 2 mg/cm) from three commercial nanopowder materials, P90, P25 and CG 300, their characterisation (profilometry, BET and SEM) and evaluation of their photocatalytic activity in the gaseous phase in a flow-through photoreactor according to the ISO standard (ISO 22197-2). Hexane was chosen as a single model pollutant and a mixture of four compounds, namely acetaldehyde, acetone, heptane and toluene was used for the evaluation of the efficiency of simultaneous removal of several pollutants.

Composite TiO films modified by CeO and SiO for the photocatalytic removal of water pollutants.

TiO particles of high photocatalytic activity immobilised on various substrates usually suffer from low mechanical stability. This can be overcome by the utilisation of an inorganic binder and/or incorporation in a robust hydrophobic matrix based on rare-earth metal oxides (REOs). Furthermore, intrinsic hydrophobicity of REOs may result in an increased affinity of TiO-REOs composites to non-polar aqueous pollutants.

Atomic layer deposited films of AlO on fluorine-doped tin oxide electrodes: stability and barrier properties.

AlO layers were deposited onto electrodes by atomic layer deposition. Solubility and electron-transport blocking were tested. Films deposited onto fluorine-doped tin oxide (FTO, F:SnO/glass) substrates blocked electron transfer to redox couples (ferricyanide/ferrocyanide) in aqueous media.

Graphitic Carbon Nitride for Photocatalytic Air Treatment.

Graphitic carbon nitride (g-CN) is a conjugated polymer, which recently drew a lot of attention as a metal-free and UV and visible light responsive photocatalyst in the field of solar energy conversion and environmental remediation. This is due to its appealing electronic band structure, high physicochemical stability and earth-abundant nature. In the present work, bulk g-CN was synthesized by thermal decomposition of melamine.

2D MoS nanosheets on 1D anodic TiO nanotube layers: an efficient co-catalyst for liquid and gas phase photocatalysis.

One-dimensional TiO nanotube layers with different dimensions were homogeneously decorated with 2D MoS nanosheets via atomic layer deposition and employed for liquid and gas phase photocatalysis. The 2D MoS nanosheets revealed a high amount of exposed active edge sites and strongly enhanced the photocatalytic performance of TiO nanotube layers.

Transparent rutile TiO films prepared by thermal oxidation of sputtered Ti on FTO glass.

TiO2 films were prepared via a two-step fabrication process, i.e. deposition of Ti films by magnetron sputtering on an FTO glass substrate followed by thermal oxidation at 600-725 °C.

Semi-automatic spray pyrolysis deposition of thin, transparent, titania films as blocking layers for dye-sensitized and perovskite solar cells.

For proper function of the negative electrode of dye-sensitized and perovskite solar cells, the deposition of a nonporous blocking film is required on the surface of F-doped SnO (FTO) glass substrates. Such a blocking film can minimise undesirable parasitic processes, for example, the back reaction of photoinjected electrons with the oxidized form of the redox mediator or with the hole-transporting medium can be avoided. In the present work, thin, transparent, blocking TiO films are prepared by semi-automatic spray pyrolysis of precursors consisting of titanium diisopropoxide bis(acetylacetonate) as the main component.

Transparent Nanotubular TiO₂ Photoanodes Grown Directly on FTO Substrates.

This work describes the preparation of transparent TiO₂ nanotube (TNT) arrays on fluorine-doped tin oxide (FTO) substrates. An optimized electrolyte composition (0.2 mol dm NH₄F and 4 mol dm H₂O in ethylene glycol) was used for the anodization of Ti films with different thicknesses (from 100 to 1300 nm) sputtered on the FTO glass substrates.

Photoanodes based on TiO and α-FeO for solar water splitting - superior role of 1D nanoarchitectures and of combined heterostructures.

Solar driven photoelectrochemical water splitting (PEC-WS) using semiconductor photoelectrodes represents a promising approach for a sustainable and environmentally friendly production of renewable energy vectors and fuel sources, such as dihydrogen (H). In this context, titanium dioxide (TiO) and iron oxide (hematite, α-FeO) are among the most investigated candidates as photoanode materials, mainly owing to their resistance to photocorrosion, non-toxicity, natural abundance, and low production cost. Major drawbacks are, however, an inherently low electrical conductivity and a limited hole diffusion length that significantly affect the performance of TiO and α-FeO in PEC devices.

TiO2 and Fe2O3 films for photoelectrochemical water splitting.

Titanium oxide (TiO2) and iron oxide (α-Fe2O3) hematite films have potential applications as photoanodes in electrochemical water splitting. In the present work TiO2 and α-Fe2O3 thin films were prepared by two methods, e.g.

Photocatalytic behavior of nanosized TiO2 immobilized on layered double hydroxides by delamination/restacking process.

Introduction: Efficient immobilization of TiO(2) nanoparticles on the surface of Mg(2)Al-LDH nanosheets was performed by delamination/restacking process. EXPERIMENTAL PART: The structural and textural properties of as-prepared nanocomposite were deeply analyzed using different solid-state characterization techniques such as: X-ray powder diffraction, Fourier transform infrared spectroscopy, and Raman spectroscopies, chemical analysis, X-ray photoelecton spectroscopy, N(2) adsorption-desorption, and electronic microscopy.

Results And Discussion: The photocatalytic properties of immobilized TiO(2) nanoparticles on Mg(2)Al were investigated using the photodegradation of two model pollutants: Orange II and 4-chlorophenol, and compared with pure colloidal TiO(2) solution.

Critical assessment of suitable methods used for determination of antibacterial properties at photocatalytic surfaces.

This work describes the development of methods necessary for antibacterial effect evaluation on irradiated TiO(2) layers. Two methods using bacteria suspensions and the glass adhesion method (based on ISO 27447:2009(E)) were critically assessed and compared. As test bacteria gram negative Escherichia coli and gram positive Enterococcus faecalis were employed.

Mineralisation of Monuron photoinduced by Fe(III) in aqueous solution.

The degradation of Monuron (3-(4-chlorophenyl)-1,1-dimethylurea) photoinduced by Fe(III) in aqueous solution has been investigated. The rate of degradation depends on the concentration of Fe(OH)2+, the most photoreactive species in terms of *OH radical formation. These *OH radicals are able to degrade Monuron until total mineralisation.