Electrodeposition and anodic stripping of silver on single carbon fibers

Silver is deposited electrolytically on carbon fibers from acetate buffer at pH 4.6 in the potential range from ?0.3 to ?0.8 V vs. SCE. Chronoamperometric and cyclic voltammetric measurements confirm that the mecanism of deposition is nucleation; the rate is higher than that at large circular glassy carbon electrodes. The silver deposits are more stable, especially with respect to oxidation by air, than are similar deposits of mercury. Preliminary results on codeposition of silver and mercury are reported.