Title
Silver-polymer core-shell nanoparticles for ultrastable plasmon-enhanced photocatalysis Silver-polymer core-shell nanoparticles for ultrastable plasmon-enhanced photocatalysis
Author
Faculty/Department
Faculty of Sciences. Physics
Faculty of Sciences. Bioscience Engineering
Publication type
article
Publication
Amsterdam ,
Subject
Physics
Source (journal)
Applied catalysis : B : environmental. - Amsterdam
Volume/pages
200(2017) , p. 31-38
ISSN
0926-3373
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Affordable silver-polymer core-shell nanoparticles are prepared using the layer-by-layer (LbL) technique. The metallic silver core is encapsulated with an ultra-thin protective shell that prevents oxidation and clustering without compromising the plasmonic properties. The core-shell nanoparticles retain their plasmonic near field enhancement effect, as studied from finite element numerical simulations. Control over the shell thickness up to the sub-nanometer level is there for key. The particles are used to prepare a plasmonic Ag-TiO2 photocatalyst of which the gas phase photocatalytic activity is monitored over a period of four months. The described system outperforms pristine TiO2 and retains its plasmonic enhancement in contrast to TiO2 modified with bare silver nanoparticles. With this an important step is made toward the development of long-term stable plasmonic (photocatalytic) applications.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/8f68bd/134384.pdf
E-info
https://repository.uantwerpen.be/docman/iruaauth/51f5da/134384.pdf
Handle