Detection of HO2 radicals in the photocatalytic oxidation of Methyl ethyl ketone.

Jérôme Thiebaud (1) , Alexander Parker (1) , Christa Fittschen (1) , Guillaume Vincent (2) , Orfan Zahraa (2) , Paul-Marie Marquaire (2)

1 PC2A - Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522
2 DCPR - Département de Chimie Physique des Réactions

The possibility of HO2 formation and its diffusion into the gas phase during the photocatalytic degradation of methy ethyl ketone (MEK) on TiO2 has been studied using the very sensitive and selective detection method of continuous wave cavity ring down spectroscopy (cw-CRDS), coupled to a continuous photolysis reactor. No HO2 radicals could be detected, given a detection limit of 3.2 X 109 cm-3.

Domaines: Chimie-Physique [physics.chem-ph]

Jérôme Thiebaud, Alexander Parker, Christa Fittschen, Guillaume Vincent, Orfan Zahraa, et al.. Detection of HO2 radicals in the photocatalytic oxidation of Methyl ethyl ketone.. Journal of Physical Chemistry C, 2008, 112, pp.2239-2243. ⟨10.1021/jp711388k⟩. ⟨hal-00265602⟩