https://doi.org/10.1140/epjd/e2003-00133-6
Effect of radiation dose on the size of bismuth particles produced by radiolysis
1
Université d'Orléans-CNRS (CRMD UMR 6619) , 1bis rue de la
Férollerie, 45071 Orléans Cedex 2, France
2
ICMCB-CNRS, University Bordeaux I, 87 avenue Dr. Schweitzer, 33608 Pessac Cedex, France
Corresponding author: a treguer@icmcb.u-bordeaux.fr
Received:
10
September
2002
Published online:
3
July
2003
Colloidal bismuth is formed in γ-irradiated solutions , containing
BiO+, 0.2 M propanol-2 and 
M of polyacrylic acid. Radiolytic
reduction of these solutions produces long-lived bismuth clusters which are
stabilized on the polymer chains. The clusters have a distinct absorption band
at 350 nm with a tentatively assigned to Bi
or Bi
structures. With continued irradiation, the clusters coalesce into colloidal
particles of 5 nm diameter. The absorption spectra of Bi oligomers and
colloidal particles are reported as well as the optical changes accompanying
their formation.
PACS: 61.46.+w – Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals / 78.67.Bf – Nanocrystals and nanoparticles / 81.07.Bc – Nanocrystalline materials / 82.35.Np – Nanoparticles in polymers
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
