Adsorption and Desorption of NO and NO2 Molecules on Gold Cluster Anions Observed by Thermal Desorption Spectrometry

Masato Yamaguchi, Fumitaka Mafuné

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The adsorption and thermal desorption of NO and NO2 molecules on gold cluster anions, Au4-, were experimentally observed using gas-phase thermal desorption spectrometry. Multiple collisions of NO molecules with Au4- at 300 K generated Au4(NO)k- (k = 1-3). The NO molecules desorbed from the clusters in a stepwise manner when the clusters were heated, and finally Au4- was regenerated above 600 K. For NO2, Au4N2O4- was found to be thermally unstable. Hence, two NO2 molecules were sequentially released from Au4N3O6-, when Au4N3O6- was heated at 500-800 K, forming Au4NO2-. A gold oxide cluster, Au4O2-, was produced as a result of the decomposition of NO2 to NO and O on Au4-, and the NO molecules were released above 900 K.

Original languageEnglish
Pages (from-to)15575-15581
Number of pages7
JournalJournal of Physical Chemistry C
Volume123
Issue number25
DOIs
Publication statusPublished - Jun 27 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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