Cu Coadsorption with SO4 on Au(111)

Materials Science Research Group


click to enlarge



Papers

To the right are links to images, animations, and other resources which are intended to augment the following papers.



5. cond-mat/9805126

Title: Monte Carlo Methods for Equilibrium and Nonequilibrium Problems in Interfacial Electrochemistry
Authors: Gregory Brown, Per Arne Rikvold, S. J. Mitchell, M. A. Novotny

4. cond-mat/9709320

Title: Simulated Dynamics of Underpotential Deposition of Cu with Sulfate on Au(111)
Authors: Gregory Brown, Per Arne Rikvold, M. A. Novotny, Andrzej Wieckowski

3. cond-mat/9703209

Title: Equilibrium and nonequilibrium applications of lattice-gas models in electrochemistry
Authors: Per Arne Rikvold, Gregory Brown, M. A. Novotny, Andrzej Wieckowski

2. cond-mat/9510054

Title: Underpotential deposition of Cu on Au(111) in sulfate-containing electrolytes: a theoretical and experimental study
Author: Jun Zhang, Yung-Eun Sung, P.A. Rikvold, A. Wieckowski

1. cond-mat/9503011

Title: Coadsorption of Copper and Sulfate on Au(111) Electrodes: Monte Carlo Simulation of a Lattice-Gas Model
Authors: J. Zhang, P.A. Rikvold, Y.-E. Sung, A. Wieckowski


Additional Resources

Note: MPEG files may not work in all viewers on all platforms. We apologize for any inconvenience this may cause you.



Figure numbers are in reference to paper #4 to the left.

MPEG A 20 mV negative-going potential-step simulation through Peak A (Fig. 8 in paper). Transition from disordered low-coverage phase to ordered (R3xR3) phase. Total simulated time is approximately 0.928 s (1.86E+9 MCSS). The corresponding current transient is shown in Fig. 7(A) for times up to 2.5 s.
(About 6MB.)

MPEG A 24 mV positive-going potential-step simulation through Peak A'. Transition from ordered (R3xR3) phase to disordered low-coverage phase. Total simulated time is approximately 0.995 s (1.99E+9 MCSS). The corresponding current transient is shown in Fig. 7(A'). During this time, the system decays to an intermediate, metastable (R3xR3) phase with 1/3 ML of both Cu and sulfate.
(About 2MB.)

MPEG A 24 mV positive-going potential-step simulation through Peak A'. Transition from ordered (R3xR3) phase to disordered low-coverage phase. Total simulated time is approximately 34.5 s (6.89E+10 MCSS). This is a longer version of the the movie above, showing the final decay to the disordered low-coverage phase. Since the lifetime of the intermediate, metastable phase is long, and Cu and sulfate desorption give partial currents of opposite sign, the corresponding current transient is very weak. The first 1.0 s of the current transient is shown in Fig. 7(A').
(About 8MB.)

MPEG A 19 mV negative-going potential-step simulation through Peak B. Transition from ordered (R3xR3) phase to Cu monolayer. Total simulated time is approximately 23.4 s (4.68E+10 MCSS). The corresponding current transient is shown in Fig. 6(B) for times up to 25 s.
(About 2MB.)

MPEG A 30 mV positive-going potential-step simulation through Peak B'. Transition from Cu monolayer to ordered (R3xR3) phase. Total simulated time is approximately 9.95 s (1.99E+10 MCSS). The first 7 s of the corresponding current transient is shown in Fig. 6(B').
(About 2MB.)