pH Dependent Photoformation of Hydroxyl Radical and Absorbance of Aqueous-Phase N(III) (HNO2and NO2-)

1999 ◽  
Vol 33 (15) ◽  
pp. 2561-2565 ◽  
Author(s):  
Takemitsu Arakaki ◽  
Takayuki Miyake ◽  
Tsuyoshi Hirakawa ◽  
Hiroshi Sakugawa
Keyword(s):  
Hydroxyl Radical ◽  
Aqueous Phase ◽  
Ph Dependent

scholarly journals Electronic structure of aqueous-phase anatase titanium dioxide nanoparticles probed by liquid jet photoelectron spectroscopy

2019 ◽  
Vol 7 (12) ◽  
pp. 6665-6675 ◽  
Author(s):  
Hebatallah Ali ◽  
Robert Seidel ◽  
Arno Bergmann ◽  
Bernd Winter
Keyword(s):  
Titanium Dioxide ◽  
Electronic Structure ◽  
Aqueous Phase ◽  
Photoelectron Spectroscopy ◽  
Titanium Dioxide Nanoparticles ◽  
Liquid Jet ◽  
Water Interaction ◽  
Ph Dependent ◽  
Dependent Mechanism

Proposed pH-dependent mechanism of TiO2–water interaction.

On the pH-dependent yield of hydroxyl radical products from peroxynitrite

1994 ◽  
Vol 16 (3) ◽  
pp. 331-338 ◽  
Author(s):  
John P. Crow ◽  
Christiana Spruell ◽  
Jun Chen ◽  
Christopher Gunn ◽  
Harry Ischiropoulos ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Ph Dependent

scholarly journals Photochemistry of the Cloud Aqueous Phase: A Review

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 423
Author(s):  
Angelica Bianco ◽  
Monica Passananti ◽  
Marcello Brigante ◽  
Gilles Mailhot
Keyword(s):  
Hydrogen Peroxide ◽  
Hydroxyl Radical ◽  
Aqueous Phase ◽  
Review Paper ◽  
Formation Rate ◽  
Nitrate Radical ◽  
Steady State Concentration ◽  
Potential Impact ◽  
State Concentration

This review paper describes briefly the cloud aqueous phase composition and deeply its reactivity in the dark and mainly under solar radiation. The role of the main oxidants (hydrogen peroxide, nitrate radical, and hydroxyl radical) is presented with a focus on the hydroxyl radical, which drives the oxidation capacity during the day. Its sources in the aqueous phase, mainly through photochemical mechanisms with H2O2, iron complexes, or nitrate/nitrite ions, are presented in detail. The formation rate of hydroxyl radical and its steady state concentration evaluated by different authors are listed and compared. Finally, a paragraph is also dedicated to the sinks and the reactivity of the HO• radical with the main compounds found in the cloud aqueous phase. This review presents an assessment of the reactivity in the cloud aqueous phase and shows the significant potential impact that this medium can have on the chemistry of the atmosphere and more generally on the climate.

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