SERS observation of the effects of pressure and water on the absorbed state of nitrogen dioxide on a silver powder surface

Hideyuki Matsuta, Kichinosuke Hirokawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The effects of pressure and water on the adsorbed state of nitrogen dioxide on silver powder produced from an aqueous solution of AgNO3 were studied by SERS. NO2 of 102 Pa was added to the silver powder in the sample chamber and then pressure was raised up to ∼105 Pa with dry Ar, N2 or O2. The observed surface species are NO3- and NO2- ions under atmospheric pressure. When the total pressure decreases, NO2- is transformed into NO3- and NO+. This reaction is reversible with the total pressure variation of dry gases regardless of kind. Once the silver powder adsorbing nitrogen oxides is exposed to moistened gas or air of ∼105 Pa, the reversible variation was interrupted, and NO3- and NO2- ions are observed on the silver surface.

Original languageEnglish
Pages (from-to)L555-L560
JournalSurface Science
Volume172
Issue number3
DOIs
Publication statusPublished - 1986 Jul 2

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'SERS observation of the effects of pressure and water on the absorbed state of nitrogen dioxide on a silver powder surface'. Together they form a unique fingerprint.

Cite this