Issue 36, 2016

Photoinduced water splitting in pyridine water clusters

Abstract

Ab initio calculations predict that pyridine (Py) can act as a photo-catalyst to split water by the absorption of a UV photon following the reaction Py–H2O + → PyH˙ + OH˙. To test this prediction, we performed two types of experiments: in the first, we characterize the electronic spectroscopy of the PyH˙ radical in the gas phase. In the second, we evidence the reaction through the UV excitation of molecular Py–(H2O)n clusters obtained in a supersonic expansion and monitoring the PyH˙ reaction product. The results show unambiguously that PyH˙ is produced, and thus that water is split using pyridine as a photo-catalyst.

Graphical abstract: Photoinduced water splitting in pyridine water clusters

Supplementary files

Article information

Article type
Paper
Submitted
23 Jun 2016
Accepted
16 Aug 2016
First published
19 Aug 2016
This article is Open Access
Creative Commons BY-NC license

Phys. Chem. Chem. Phys., 2016,18, 25637-25644

Author version available

Photoinduced water splitting in pyridine water clusters

N. Esteves-López, S. Coussan, C. Dedonder-Lardeux and C. Jouvet, Phys. Chem. Chem. Phys., 2016, 18, 25637 DOI: 10.1039/C6CP04398D

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