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Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

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Related Experiment Video

Updated: May 30, 2026

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Published on: June 25, 2018

Palladium diffusion into bulk copper via the (100) surface.

E Bussmann¹, J Sun, K Pohl

¹Sandia National Laboratories, Albuquerque, NM 87185, USA.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|August 11, 2011

Summary

This summary is machine-generated.

We measured palladium (Pd) diffusion into copper (Cu) at the Cu(100) surface. The activation energy for Pd diffusion into bulk Cu was determined to be 1.8 eV.

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Area of Science:

Materials Science
Surface Science
Physical Chemistry

Background:

Understanding metal interdiffusion is crucial for designing alloys and thin films.
Surface alloys offer a unique system to study diffusion mechanisms at the atomic level.

Purpose of the Study:

To quantify the activation barrier for palladium (Pd) diffusion into bulk copper (Cu) at the Cu(100) surface.
To investigate the structural evolution of Pd-Cu surface alloys during annealing.

Main Methods:

Low-energy electron microscopy (LEEM) was used to observe surface changes.
Annealing experiments were conducted at temperatures above 240°C to track interdiffusion.
Surface alloy dissolution and layer growth were monitored in situ.

Main Results:

The activation barrier for Pd diffusion from the Cu(100)-c(2 × 2)-Pd surface alloy into the bulk was determined to be (1.8 ± 0.6) eV.
Copper (Cu) layer growth was observed near step edges during annealing.
A layered structure, resembling the Cu(3)Pd L1(2) bulk alloy, formed from residual Pd under the new Cu layer.

Conclusions:

The study provides a quantitative measure of Pd diffusion into Cu, essential for materials design.
The observed structural evolution highlights complex surface phenomena during alloy formation.
The findings contribute to understanding phase formation in Pd-Cu systems at the nanoscale.