Accelerators Laboratory

Multidisciplinary research using charged particle beams

Nanoparticles

Radiolysis is a particularly suitable method to form metal nanoparticles in solution. The interaction of high-energy radiation with a solution of metal ions induces ionization and excitation of the solvent (water), and leads to the formation of radiolytic molecular and radical species throughout the solution. The produced solvated electrons e_aq^- and hydrogen atom H^.  are strong reducing agents capable to reduce metal ions to lower valences and finally to metal atoms.

Our experiments were carried out on two different EB accelerators: ALIN-10 (6.23 MeV and 200 kGy/min) and ALID-7  (5 MeV, 7 kGy/s). To control size, shape, narrow distribution and yield of NP’s formation different reaction conditions are used: dose rate, absorbed dose, the initial concentration of precursors. The use of EB irradiation is a useful method to generate stable silver NP without the interference of inherent impurities generated from chemical reactions

Research Areas

Copyright © 2012 National Institute for Laser, Plasma and Radiation Physics. | site map | contact |

Chemistry

 

Polyelectrolytes     Elastomers     Pollutants removal     Nanoparticles

 

Biology

 

Biomedical studies     Biological Decontamination

 

Plasma

 

Microparticles Acceleration in Plasma

 

Theory

 

Electron Beam Dynamics     Theoretical and Computational Methods in Solids Processing with Lasers