Pd0- and Au0-Nanoparticles Catalyze the Reduction of Perchlorate by ·C(CH3)2OH Radicals

Gadi Benjamini, Ronen Bar-Ziv, Tomer Zidki, Eitan J.C. Borojovich, Guy Yardeni, Haya Kornweitz, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review


Catalytic water reduction to hydrogen takes place when metal nanoparticles (M0-NPs) of gold or palladium are charged with an excess of electrons by an electron-transfer process from strong reducing α-alcohol radicals such as ·C(CH3)2OH. The results reported in this study indicate that the M0-NPs also catalyze the reduction of perchlorate by ·C(CH3)2OH radicals and by BH4. The results point out that the M0-NPs behave as nanoelectrodes. The catalytic reduction of perchlorate competes well with the catalytic reduction of water; that is, although the concentration of perchlorate is orders of magnitude smaller than that of water, the radicals reduce the perchlorate preferentially. Thus, we have identified a new way to deal with the residual perchlorate in water, using any reducing agent forming adsorbed hydrogen. The nature of the reactive reducing agent (M0-NPs)n–/{(M0-NPs) – Hm}(n–m)– [n = number of excess electrons and m = number of electrons given off after the same number of H atoms have been adsorbed] and the energetic processes, which might be different for the two M0-NPs, are discussed. The results demonstrate that M0-NPs can be developed as simple and effective catalysts for the removal of perchlorate from polluted aqueous solutions.

Original languageEnglish
Pages (from-to)3655-3660
Number of pages6
JournalEuropean Journal of Inorganic Chemistry
Issue number30
StatePublished - 1 Jan 2017


  • Catalytic reduction
  • Gold
  • Nanoelectrodes
  • Palladium
  • Radicals

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry


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