Elemental Bromine Production by TiO2 Photocatalysis and/or Ozonation

Francesco Parrino; Giovanni Camera Roda; Vittorio Loddo; Leonardo Palmisano

doi:10.1002/anie.201603635

Elemental Bromine Production by TiO2 Photocatalysis and/or Ozonation

Angew Chem Int Ed Engl. 2016 Aug 22;55(35):10391-5. doi: 10.1002/anie.201603635. Epub 2016 Jul 27.

Authors

Francesco Parrino¹, Giovanni Camera Roda², Vittorio Loddo³, Leonardo Palmisano³

Affiliations

¹ Dipartimento di Energia, Ingegneria dell'Informazione e Modelli Matematici (DEIM), University of Palermo, viale delle Scienze Ed. 6, 90128, Palermo, Italy. [email protected].
² Department of Civil, Chemical, Environmental, and Materials Engineering, University of Bologna, via Terracini 28, 40131, Bologna, Italy.
³ Dipartimento di Energia, Ingegneria dell'Informazione e Modelli Matematici (DEIM), University of Palermo, viale delle Scienze Ed. 6, 90128, Palermo, Italy.

PMID: 27461437
DOI: 10.1002/anie.201603635

Abstract

Significant production of elemental bromine (Br2 ) was observed for the first time when treating bromide containing solutions at acidic pH, with TiO2 photocatalyst, ozone, or a combination thereof. Br2 selectivities up to approximately 85 % were obtained and the corresponding bromine mass balance values satisfied. The process is general and may be applied at a laboratory scale for green bromination reactions, or industrially as a cheap, safe, and environmentally sustainable alternative to the currently applied bromine production methods.

Keywords: TiO2; bromine; nitric acid; ozonation; photocatalysis.

Publication types

Research Support, Non-U.S. Gov't