Reaction of H2 with polyoxometalate supported Rhodium(0) and Iridium(0) nanoparticles in aqueous suspensions: a kinetic study

Aswin Kottapurath Vijay, Dan Meyerstein, Vered Marks, Yael Albo

Research output: Contribution to journalArticlepeer-review

Abstract

The kinetics of the reactions of H2 with rhodium and iridium nanoparticles (NPs), in aqueous suspensions, were studied by following their catalytic reduction of PW12O403−, POM. The reaction of H2 with the same size (∼2.5 nm) of two different nanoparticles was carried out to check how the nature of the nanoparticles affects the reaction kinetics. Herein we report the first kinetic measurement of H2 + Rh0 and Ir0 NPs in the absence of an electric field. A comparison of the apparent rate constants of the reactions Rh0-NPs and Ir0-NPs + H2 to the previously reported Pt0-NPs + H2 indicates that the rates decrease along the series k(Pt) > k(Rh) > k(Ir), though they are of the same order of magnitude. The adsorption of hydrogen and/or H atom can affect the structure of the M0-NPs.

Original languageAmerican English
Pages (from-to)13643-13650
Number of pages8
JournalNew Journal of Chemistry
Volume46
Issue number28
DOIs
StatePublished - 23 Jun 2022

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Materials Chemistry
  • Catalysis

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