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Heterogeneous Photochemistry Relevant to the Troposphere: H 2 O 2 Production during the Photochemical Reduction of NO 2 to HONO on UV‐Illuminated TiO 2 Surfaces
Author(s) -
Beaumont Simon K.,
Gustafsson R. Joel,
Lambert Richard M.
Publication year - 2009
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200800613
Subject(s) - photochemistry , chemistry , hydrogen peroxide , troposphere , stoichiometry , photodissociation , atmospheric chemistry , reaction mechanism , ozone , catalysis , organic chemistry , meteorology , physics
Bleached out: The detection of an oxidized co‐product, hydrogen peroxide, during an important tropospheric reaction, combined with the detection of photoaccelerated surface nitrate formation (a competing pathway), allows a likely mechanism to be proposed (see figure) which explains previously observed experimental stoichiometries.