Speaker
Andrei Venter
Description
We demonstrate a facile and cost effective method to obtain gold nanoparticles on graphene by dispersing Au144 molecular nanoclusters by spin coating them in thin layers on graphene-based films and subsequent annealing in a controlled atmosphere. The graphene-based thin films used for these experiments are prepared by solvent-assisted exfoliation of graphite in water in the presence of ribonucleic acid as a surfactant and by subsequent vacuum filtration of the resulting graphene-containing suspensions. Not only is this method easily reproducible, but it leads to gold nanoparticles that are not dependent in size on the number of graphene layers beneath them. This is a distinct advantage over other methods. Plasmonic effects have been detected in our gold nanoparticledecorated graphene, indicating that these thin films may be
useful in applications such as plasmonic solar cells and optical memory devices.
Author
Co-authors
Dr
Giovanni Fanchini
(The University of Western Ontario)
M Shafiq
(The University of Western Ontario)
Mr
Mahdi Hesari
(The University of Western Ontario)
Dr
Mark Workentin
(The University of Western Ontario)
Reginald Bauld
(University of Western Ontario)
