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

doi:10.1016/0039-6028(86)90495-4

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

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	L555-L560
Journal	Surface Science
Volume	172
Issue number	3
DOIs	https://doi.org/10.1016/0039-6028(86)90495-4
Publication status	Published - 1986 Jul 2

ASJC Scopus subject areas

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

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

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.",

author = "Hideyuki Matsuta and Kichinosuke Hirokawa",

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T1 - SERS observation of the effects of pressure and water on the absorbed state of nitrogen dioxide on a silver powder surface

AU - Matsuta, Hideyuki

AU - Hirokawa, Kichinosuke

PY - 1986/7/2

Y1 - 1986/7/2

N2 - 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.

AB - 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.

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

Abstract

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