| BioCera¢çWhat is Photocatalyst |
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What is the
Semiconductor Photo catalyst?
Photo-Catalysis is defined as "acceleration
by the presence of as catalyst".
This definition includes photosensitization,
"a process by which a photochemical
alteration occurs in one molecular entity
as a result of initial absorption of
radiation by another molecular entity
called the photosensitized.
We call this photosensitized the photo-catalyst",
but it excludes the photo acceleration
of a stoichiometric thermal reaction
(exergonic or endergonic) irrespective
of whether it occurs in homogeneous
solution or at the surface of an illuminated
electrode. Nano-titania Photo-catalyst
acts as an oxidizing agent when activated
by ultraviolet ray, especially sunlight.
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