β Scribed by Paul Mulvaney; Arnim Henglein
No coin nor oath required. For personal study only.
Deaerated aqueous A&IO4 solutions containing also 0.2 M methanol were exposed to a high energy electron pulse which produced reducing species (hydrated electrons, H-atoms and CHIOH radicals), and the absorption spectrum of the reduced silver species measured at various times after the pulse. The sharp 300 and 330 MI absorption bands ofoligomeric silver clusters could be detected, the life time of the clusters amounting to several seconds. Both the build-up of the clusters by agglomerations of the silver atoms formed initially and the decay of the clusters are catalytically accelerated by sulfate anions, 10m5 M concentrations of the latter already exerting a strong effect. The absorption bands of the clusters are more narrow than in solutions containing a polyanionic stabilizer. The wavelengths of the absorption maxima are the same as for polyphosphate stabilized clusters.
π SIMILAR VOLUMES
The kinetics of the potentiodynamic formation and reduction of silver sulfide films on a silver rotating disc electrode in aqueous sulfide solutions were investigated . Due to the inherently fast reaction between silver and the HS -species, the physical processes of migration and diffusion of ions i
The evolution of the surface roughness during cementation of Ag + conducted either in O 2 -free or O 2saturated aqueous H 2 SO 4 /CuSO 4 was investigated at two different initial concentrations of Ag + . The kinetics data of the process determined previously in the rotating cylinder were linked dire