Back to Search Start Over

The Existence of Nitrate Radicals in Irradiated TiO 2 Aqueous Suspensions in the Presence of Nitrate Ions

Authors :
Stefano Livraghi
Leonardo Palmisano
Francesco Parrino
Elio Giamello
Parrino, Francesco
Livraghi, Stefano
Giamello, Elio
Palmisano, Leonardo
Source :
Angewandte Chemie International Edition. 57:10702-10706
Publication Year :
2018
Publisher :
Wiley, 2018.

Abstract

Evidence of the existence of nitrate radical in irradiated aqueous TiO2 suspensions in the presence of nitrate ions are reported for the first time. The joint use of UV/Vis and EPR spectroscopy showed that nitrate radicals are formed by hole induced oxidation of nitrate ions. Photocatalytic degradation of a model alkene compound allowed to highlight the presence of an intermediate organic nitrate deriving from nitrate radical attack to the double bond of the substrate. These results not only allow deeper understanding of photocatalytic processes, but open the route to new green photocatalytic syntheses initiated by nitrate radicals and to new insights in the field of atmospheric chemistry.

Details

ISSN :
15213773 and 14337851
Volume :
57
Database :
OpenAIRE
Journal :
Angewandte Chemie International Edition
Accession number :
edsair.doi.dedup.....6aaf8ac621b9e92d9c8e405f4ef28aea
Full Text :
https://doi.org/10.1002/anie.201804879