DC corona ozone generation enhanced by TiO2 photocatalyst
The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics - Tập 50 - Trang 171-175 - 2008
Tóm tắt
Non-thermal electrical discharges, such as corona discharge are apart of the
source of ozone, charged, and excited species and acoustic noise also the
source of electromagnetic radiation of different wavelengths. The important
component of this radiation from the standpoint of photocatalyst activation
is the ultraviolet radiation. We studied the role of UV radiation on corona
discharge ozone production by placing the titanium dioxide photocatalyst
into the discharge region. We used hollow needle to mesh DC corona discharge
at atmospheric pressure with TiO2 globules on the mesh. The discharge
was enhanced by the flow of air through the needle. We found that for the
needle biased negatively addition of TiO2 photocatalyst on the mesh
electrode drastically increases discharge ozone production as well as the
ozone production yield. These quantities are also influenced by the mass of
the used photocatalyst and its distribution in the discharge chamber.
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