Nitrogen Dioxide
Nitrogen dioxide can also be photolytically cleaved by photons of wavelength less than 400 nm producing atomic oxygen and nitric oxide.
- NO2 → NO + O
Atomic oxygen is a highly reactive species, and can abstract a H atom from anything, including water.
- O + H2O → 2 ·OH
Nitrogen dioxide can be regenerated through a reaction between certain peroxy-containing radicals and NO.
- ROO· + NO → NO2 + RO·
Read more about this topic: Photoinitiator, Atmospheric Photoinitiators