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Photocatalysis
Videos
In chemistry, photocatalysis is the acceleration of a photoreaction in the presence of a photocatalyst, the excited state of which "repeatedly interacts with the reaction partners forming reaction int
In the experiment above, photons from a light source (out of frame on the right hand side) are absorbed by the surface of the titanium dioxide (TiO 2) disc, exciting electrons within the material. These then react with the water molecules, splitting it into its constituents of hydrogen and oxygen. In this experiment, chemicals dissolved in the water prevent the formation of oxygen, which would otherwise recombine with the hydrogen.
In the experiment above, photons from a light source (out of frame on the right hand side) are absorbed by the surface of the titanium dioxide (TiO 2)
SEM image of wood pulp (dark fibers) and tetrapodal zinc oxide micro particles (white and spiky) in paper.
SEM image of wood pulp (dark fibers) and tetrapodal zinc oxide micro particles (white and spiky) in paper.
Titanium dioxide
Videos
Titanium dioxide, also known as titanium oxide or titania, is the inorganic compound derived from titanium with the chemical formula TiO2. When used as a pigment, it is called titanium white, Pigment
Photocatalysis
…common organic compounds, which typically are not greater than E0 = +2.00 V. This results in the non-selective oxidative behavior of these radicals. TiO 2, a wide band-gap semiconductor, is a common choice for heterogeneous catalysis. Inertness to chemical environment and long-term photostability has made…
The unit cell of rutile
The unit cell of rutile
Residues from sulfate process outside a titanium dioxide production facility in Kaanaa, Pori, Finland.
Residues from sulfate process outside a titanium dioxide production facility in Kaanaa, Pori, Finland.
Synthetic single crystals of TiO2, c. 2–3 mm in size, cut from a larger plate
Synthetic single crystals of TiO2, c. 2–3 mm in size, cut from a larger plate
SEM (top) and TEM (bottom) images of chiral TiO2 nanofibers
SEM (top) and TEM (bottom) images of chiral TiO2 nanofibers