Silver nanoparticle catalysed redox reaction: An electron relay effect

A silver cluster shows efficient catalytic activity in a redox reaction because the cluster acts as the electron relay centre behaving alternatively as an acceptor and as a donor of electrons. An effective transfer of electrons is possible when the redox potential of the cluster is intermediate between the electron donor and electron acceptor system. (c) 2005 Elsevier B.V. All rights reserved.