English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  XANES studies of the formation of Ag-nanoparticles in LbL deposited polyelectrolyte thin films

Itani, H., Keil, P., Lützenkirchen-Hecht, D., Haake, U., Bongard, H., Dreier, A., et al. (2010). XANES studies of the formation of Ag-nanoparticles in LbL deposited polyelectrolyte thin films. Surface and Coatings Technology, 205(7), 2113-2119. doi:10.1016/j.surfcoat.2010.08.104.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Itani, H.1, 2, Author
Keil, P.1, Author
Lützenkirchen-Hecht, D.3, Author
Haake, U.3, Author
Bongard, Hans4, Author           
Dreier, Axel4, Author           
Lehmann, Christian W.4, Author           
Grundmeier, Guido5, Author
Affiliations:
1Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck Straße 1, D-40237 Düsseldorf, Germany, ou_persistent22              
2IMPRS-SurMat: International Max-Planck Research School for Surface and Interface Engineering in Advanced Materials, Düsseldorf, Germany, ou_persistent22              
3Fachbereich C-Physik, Bergische Universität Wuppertal, Gaußstr. 20, 42097 Wuppertal, Germany, ou_persistent22              
4Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              
5Department of Technical and Macromolecular Chemistry, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany, ou_persistent22              

Content

show
hide
Free keywords: Polyelectrolyte multilayers; Nanoreactors; Nanostructured materials; Ag-nanoparticles; XANES
 Abstract: Layer-by-layer polyelectrolyte multilayer thin films, composed of poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA) were used as polymeric nanoreactors for the nucleation and growth of Ag-nanoparticles. The effects of precursor conditions like the pH on the corresponding size, distribution and fractional composition of the embedded silver were studied before, during and after reduction process by means of NaBH4. X-ray absorption near edge structure (XANES) investigations enabled to distinguish between metallic Ag in the particles, dissolved Ag+-ions and Ag+-ions coordinated with carboxylic acid groups via a metal-ion exchange mechanism. The detailed analysis of the X-ray data showed that fractional composition of the embedded silver is determined by the processing conditions of the multilayer assembly during the nucleation and growth of Ag-nanoparticle PAH/PAA multilayer films. When the unreduced Ag-loaded PAH/PAA samples were exposed to ambient light, small Ag particles were formed within the polyelectrolyte multilayer films by reduction due to UV exposure. The formation of Ag-nanoparticles was confirmed by means of TEM and the characteristic plasmon resonance absorption peak in the UV–Vis range.

Details

show
hide
Language(s): eng - English
 Dates: 2010-12-25
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.surfcoat.2010.08.104
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Surface and Coatings Technology
  Abbreviation : Surf. Coat. Tech.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Lausanne : Elsevier
Pages: - Volume / Issue: 205 (7) Sequence Number: - Start / End Page: 2113 - 2119 Identifier: ISSN: 0257-8972
CoNE: https://pure.mpg.de/cone/journals/resource/954925496044