Photosensitized heterogeneous chemistry of ozone on organic films

The Journal of Physical Chemistry. a
A JammoulBarbara D'Anna

Abstract

The interactions of ozone with benzophenone and phenol solid films have been investigated under simulated atmospheric conditions with respect to relative humidity, pressure, temperature, and O3 concentration using a coated flow tube reactor. The steady-state reactive uptake coefficients (gammass) of ozone on benzophenone films ranged from below 10(-6) in dark conditions to approximately 4 x 10(-6) under UV-A irradiation and decreased with increasing O3 concentration in the range 28-320 ppbv. A similar trend was observed for the initial uptake coefficient (gammai) which varied from ca. 1.5 x 10(-6) in the dark to approximately 7 x 10(-6) under UV-A irradiation. The uptake coefficients under irradiation were strongly dependent on the relative humidity (from 5 to 70%), with their lowest values at high humidity (70% RH). The ozone uptakes for multilayer coverage turned out to be independent of the deposited mass of the organic compound. The benzophenone-phenol mixture also showed photoenhanced uptake with a larger steady-state uptake under visible irradiation, approximately 2.9 x 10(-6). Contact angle measurements showed an increase of the organic film hydrophobicity for the benzophenone-phenol mixture upon combined exposure to lig...Continue Reading

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Citations

May 18, 2011·Environmental Science & Technology·Christine BaduelBarbara D'Anna
Dec 14, 2011·Environmental Science & Technology·Elena Gómez AlvarezSasho Gligorovski
Jun 26, 2012·Environmental Science & Technology·D J Donaldson, Christian George
Mar 31, 2012·The Journal of Physical Chemistry. a·Chong HanHong He
May 14, 2008·Physical Chemistry Chemical Physics : PCCP·L Nieto-GligorovskiC George
Feb 19, 2009·Physical Chemistry Chemical Physics : PCCP·Marième NdourChristian George
Sep 4, 2009·Physical Chemistry Chemical Physics : PCCP·Sarah A StylerD J Donaldson
Sep 4, 2009·Physical Chemistry Chemical Physics : PCCP·Scott Cowen, Hind A Al-Abadleh
May 27, 2010·Physical Chemistry Chemical Physics : PCCP·Sopheak NetHenri Wortham
Jun 15, 2010·Physical Chemistry Chemical Physics : PCCP·Maria Eugenia MongeChristian George
May 17, 2011·Physical Chemistry Chemical Physics : PCCP·Valter MaurinoClaudio Minero
Jun 9, 2012·Physical Chemistry Chemical Physics : PCCP·Tran B NguyenSergey A Nizkorodov
Dec 14, 2012·Proceedings of the National Academy of Sciences of the United States of America·Chong HanHong He
Nov 28, 2013·Environmental Science and Pollution Research International·Davide VioneClaudio Minero
Dec 3, 2015·Chemical Reviews·Sasho GligorovskiDavide Vione
Apr 5, 2015·The Science of the Total Environment·Mae Sexauer GustinJoel Burley
Mar 17, 2015·Chemical Reviews·Christian GeorgeSergey A Nizkorodov
Sep 28, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Rachid AmmarBarbara D'Anna
Jul 9, 2013·Environmental Pollution·Guangjie ZhengYongliang Ma
Jan 13, 2010·Physical Chemistry Chemical Physics : PCCP·I GrgićH Wortham
Jul 14, 2016·Environmental Science & Technology·Mulu A KebedeJonathan D Raff
Aug 19, 2016·Physical Chemistry Chemical Physics : PCCP·Chong HanHong He
Jun 5, 2012·Chemical Society Reviews·J P D AbbattJ A Thornton
Mar 23, 2021·Reviews of Geophysics·Olivia E CliftonAmos P K Tai
Mar 31, 2021·Environmental Science & Technology·Yiqun WangSasho Gligorovski
Aug 7, 2008·The Journal of Physical Chemistry. a·Marcello BriganteD J Donaldson
Oct 24, 2009·Environmental Science & Technology·Mélanie NicolasChristian George

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