PULSE AND GAMMA-RADIOLYTIC STUDIES ON THE FORMATION OF CD, PD AND CU CLUSTERS IN AQUEOUS-SOLUTIONS

Investigations on the formation of Cd, Pd and Cu sols using radiolytic techniques have been carried out. The reducing properties of the Cd p articles were confirmed by dissolving MV2+, N2O and O-2. BY Using high intensity electron pulses we observed the formation of the highly sta ble (approx. 8 days) Cd particles that showed absorption at both 270 a nd 450 nm. In the case of Cu, the stability of the sol depends on the type of reducing radical used, such as formate and isopropanol. It has been shown for Pd and Cd sols that the presence of both the stabilize r and agglomerated particles play an important role in stabilizing the small clusters. (C) 1997 Elsevier Science Ltd. All rights reserved.