Abstract
The growth morphologies of electrodeposited silver under potential control on an Au (111) surface from the solutions of 5mM AgNO3/0.5M HNO3 and 5mM KAg (CN)2/0.5M KCN were investigated using Scanning Tunneling Microscopy (STM) in air. The silver films were deposited between 20mV and 100mV overpotential. From 5mM AgNO3/0.5M HNO3, silver was deposited like a single crystal along the gold substrate at 20mV overpotential. At 50mV overpotential large grains (300-500nm) were formed. Finally, at 100mV overpotential rough films were formed. From 5mM KAg (CN)2/0.5M KCN, silver was deposited like a single crystal at 20mV overpotential, and between 50mV and 100mV, smaller grain deposition with 50-100nm particles were clearly deposited compared to the deposit from 5mM AgNO3/0.5M HNO3.
