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

Kiefer, Johannes LU ; Zetterberg, Johan LU ; Ehn, Andreas LU ; Evertsson, Jonas LU ; Harlow, Gary LU and Lundgren, Edvin LU (2017) In Applied Sciences (Switzerland) 7(12).
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... (More)

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.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Adsorption, ATR-FTIR, Hydrogen bonding
in
Applied Sciences (Switzerland)
volume
7
issue
12
publisher
Multidisciplinary Digital Publishing Institute (MDPI)
external identifiers
  • scopus:85035756156
DOI
10.3390/app7121229
language
English
LU publication?
yes
id
fb251427-eebe-499d-b887-450a506aa960
date added to LUP
2017-12-12 13:09:52
date last changed
2018-11-21 21:36:36
@article{fb251427-eebe-499d-b887-450a506aa960,
  abstract     = {<p>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.</p>},
  articleno    = {1229},
  author       = {Kiefer, Johannes and Zetterberg, Johan and Ehn, Andreas and Evertsson, Jonas and Harlow, Gary and Lundgren, Edvin},
  keyword      = {Adsorption,ATR-FTIR,Hydrogen bonding},
  language     = {eng},
  month        = {11},
  number       = {12},
  publisher    = {Multidisciplinary Digital Publishing Institute (MDPI)},
  series       = {Applied Sciences (Switzerland)},
  title        = {Infrared spectroscopy as molecular probe of the macroscopic metal-liquid interface},
  url          = {http://dx.doi.org/10.3390/app7121229},
  volume       = {7},
  year         = {2017},
}