It is known that UV is used for photo degradation of some organic compounds , but the question is .... can we use it for photo degradation of all organic compounds ?or there is some conditions to do so ?
Yes you can use continuous UV light for photodegradation in presence of air. This will give accelerated degradation value. Dye molecules having wave length maxima around the UV light wavelength will absorb and undergo isomerization, crosslinking, non-linearity etc. when used in controlled way or at lower energy level. When it is exposed continuously or at very high energy, it degrades.
Some. but not all, organic compounds can be degraded by direct photolysis. Examples of organics that can be destroyed by direct photolysis (UV-vis irradiation alone) are N-nitrozodimethylamine (NDMA), trichlorethylene (TCE), nitrobenzne, nitrophenol, halogenated aromatics, etc., and addition of hydrogen peroxide increases the rate of removal all organics except NDMA.
You should consider the photolability of the selected organic pollutants. In general, with photocatalyst or sensitizer, organics are degraded faster..
yes UV light can be used for photodegradation of many organic compounds. Most Pesticides, dyes, POPs were photodegraded.
Many organic compounds, such as pharmaceuticals, dyes and pesticides, can be degraded through UV light.
In general, all organic compounds should be degraded by UV light. But the visible light induced photodegradation of organic compounds we can use visible light instead of UV light
UV light degrades many organic molecules and the intensity should be used depends on the nature of the compound.
- Is it possible to take UV-vis spectrum of a UV-sensitive compound?
You can also predict UV degradation kinetic parameters like t1/2 (degradation half-life) of organic compounds like dyes.
yes you can use uv light with all pollutants but not with all catalyst because there are some catalysts excited under visible light
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