Keywords: Tin oxide Sol–gel process Nanoparticle Photocatalysis Phenol degradation Visible light a b s t r a c t Iodine doped tin oxide (SnO 2 :I) nanoparticles were prepared by sol–gel synthesis and their photocatalytic activities with phenol as a test contaminant were studied. In the presence of the catalysts, phenol degradation under direct sunlight was comparable to what was achieved under ...

Titanium dioxide-based nanofibers (TiO2 nanofiber) were prepared by an electrospinning technique. The electrospun composite fibers were synthesized at different concentrations of titanium isopropoxide (25.35, 50.69, 76.05 wt%) and calcinated at different temperatures (450 oC, 650 oC and 850 oC) for 2 h. The diameters of nanofibers decreased by increas...

We have fabricated titanium dioxide based dye-sensitized solar cells that incorporate corrosion-protected silver nanoparticles as plasmonic optical elements of the photoelectrode. The thickness of the TiO(2) layer separating the dye from the nanoparticles has been systematically varied using atomic layer deposition. Over the range of TiO(2) coating thicknesses examined (2 to 8 nm) there is clea...

We demonstrate that the biomimetic method-which has been used for the formation of silica thin films-also could be applied directly to the formation of titanium dioxide (TiO(2)) thin films, which are technologically important materials because of their applications to photocatalytic purifiers, photochemical solar cells, and others. After generation of poly(2-(dimethylamino)ethyl methacrylate) (...

              The present work is focused on the degradation of 4-chloro-2-nitrophenol in aqueous solution containing nano titanium dioxide, hydrogen peroxide and the combination of nano-TiO2/H2O2. The effect of experimental parameters, such as the amount of nano- TiO2 concentration of H2O2, initial concentration of 4-chloro-...

AIM To investigate morphological alterations of malignant cancer cells (T24) of urothelial origin seeded on flat titanium (Ti) and nanotubular TiO(2) (titanium dioxide) nanostructures. METHODS Using anodization method, TiO(2) surfaces composed of vertically aligned nanotubes of 50-100 nm diameters were produced. The flat Ti surface was used as a reference. The alteration in the morphology of ...

Titanium dioxide, TiO 2 , is a widely used, yet quite inefficient photocatalyst. Among the important drawbacks, its band gap is rather large for efficient use of sunlight, and control of trapping and recombination sites for photo-excited carriers is very limited. In this talk I will present results of theoretical studies aimed at obtaining insights into issues relevant to TiO 2-based photocatal...

Nanoparticulate titanium dioxide (TiO(2)) is highly photoactive, and its function as a photocatalyst drives much of the application demand for TiO(2). Because TiO(2) generates reactive oxygen species (ROS) when exposed to ultraviolet radiation (UVR), nanoparticulate TiO(2) has been used in antibacterial coatings and wastewater disinfection, and has been investigated as an anti-cancer agent. Oxi...

A silicon nanocrystals (Si-ncs) conjugated-polymer-based bulk-heterojunction represents a promising approach for low-cost hybrid solar cells. In this contribution, the bulk-heterojunction is based on Si-ncs prepared by electrochemical etching and poly(3-hexylthiophene) (P3HT) polymer. Photoelectric properties in parallel and vertical device-like configuration were investigated. Electronic inter...

Abstract Titanium dioxide (TiO 2 ), as a wide gap semiconductor photocatalytic material, has the characteristics of non-toxic, low cost and excellent catalytic activity. It is widely used materials. Much efforts have been devoted to Fe/C doping for TiO improve its visible light response. This work reviews research progress doped titanium The mechanism, preparation methods specifically reviewed....