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Photoactivity of water suspensions of titanium and tungsten oxides
Mastný, L. ; Šaněk, F. ; Brožek, Vlastimil
Generator of water-stabilised plasma WSP® may be used for the thermal disposal of organic substances for which the dwell time of 5 ms maximum at 30,000 K is sufficient to ensure their destruction. Apart from high temperature, the device generates also highly intensive UV radiation and radiation with wavelengths of around 660 nm (Hα) and 490 nm (Hβ). Radiation in this part of spectra allows for the activation of not only photocatalysts based on TiO2 but also of other semi conductive oxides with narrower forbidden band, such as tungsten oxides. Their photoactivity was observed using a model decomposition of organic substances in water suspensions. A series of experiments were initiated on the disposal of industrial toxic and explosive waste debris, such as sodium picraminate.

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