The absence of redox reactions for palladium(II) and copper(II) on electrostatically charged Teflon: Relevance to the concept of "cryptoelectrons"

Silvia Piperno, Hagai Cohen, Tatyana Bendikov, Meir Lahav, Igor Lubomirsky

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Rub-a-dub-dub: The hypothesis of contact electrification through the transfer of cryptoelectrons was tested by scrutinizing the evidence for the reduction of Pd2+ and Cu2+ by static charges on rubbed Teflon. X-ray photoelectron spectroscopy studies indicated that neither of these ions is reduced (see picture; black: Pd2+ adsorbed, red: Pd 0 adsorbed and then reduced by formadehyde, green: mixture of Pd 2+ and Pd0 arising from partial reduction after 2 h under the XPS probe) by the static charge. The presented alternative interpretation challenges the role of cryptoelectrons.

Original languageEnglish
Pages (from-to)5654-5657
Number of pages4
JournalAngewandte Chemie - International Edition
Volume50
Issue number25
DOIs
Publication statusPublished - Jun 14 2011

Keywords

  • charge transfer
  • cryptoelectrons
  • electrostatic interactions
  • redox chemistry
  • triboelectrification

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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