In situ generation of superoxide anion radical in aqueous medium under ambient conditions

Uri Stoin, Alexander I. Shames, Itamar Malka, Ilana Bar, Yoel Sasson

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

In the recent decades superoxide [O2-.] has become the subject of considerable interest. Nonetheless, generation of superoxide compounds is still a substantial challenge. The standard methods for synthesis of superoxide derivatives are either through the oxidation of molten alkali metals with hot air or by using electrolytic reduction of oxygen in aprotic solvent such as dimethylformamide. No methodology is available for the generation of superoxides in protic solutions and particularly not in water. We propose a new in situ method for alkali superoxide preparation by using sodium hydroxide and hydrogen peroxide at room temperature and in aqueous solution. Don′t go anywhere: An in situ method for alkali superoxide preparation by using sodium hydroxide and hydrogen peroxide at room temperature, in aqueous solution, and under ambient conditions. This new method generates a renewable superoxide reagent that can be used in wide range of reactions. We substantiate the formation of superoxide radical by using various chemical and physical methods.

Original languageEnglish
Pages (from-to)4158-4164
Number of pages7
JournalChemPhysChem
Volume14
Issue number18
DOIs
StatePublished - 16 Dec 2013

Keywords

  • aqueous solution
  • peroxides
  • radical ions
  • superoxides
  • synthetic methods

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