Infrared spectroscopy as molecular probe of the macroscopic metal-liquid interface

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Metal-liquid interfaces are of the utmost importance in a number of scientific areas, including electrochemistry and catalysis. However, complicated analytical methods and sample preparation are usually required to study the interfacial phenomena. We propose an infrared spectroscopic approach that enables investigating the molecular interactions at the interface, but needing only minimal or no sample preparation. For this purpose, the internal reflection element (IRE) is wetted with a solution as first step. Second, a small plate of the metal of interest is put on top and pressed onto the IRE. The tiny amount of liquid that is remaining between the IRE and the metal is sufficient to produce an IR spectrum with good signal to noise ratio, from which information about molecular interactions, such as hydrogen bonding, can be deduced. Proof-of-concept experiments were carried out with aqueous salt and acid solutions and an aluminum plate.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • University of Bremen
  • University of Aberdeen
  • Friedrich-Alexander University Erlangen-Nürnberg
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Analytisk kemi
  • Fysikalisk kemi

Nyckelord

Originalspråkengelska
Artikelnummer1229
TidskriftApplied Sciences (Switzerland)
Volym7
Utgivningsnummer12
StatusPublished - 2017 nov 28
PublikationskategoriForskning
Peer review utfördJa