Hope College Physics Department
Research Experiences for Undergraduates
|Project Title:||Characterization of Electrodeposited and Dealloyed NiFeCu Thin Films|
|Student Name:||Willie Washington|
|Student's Home Institution:||Park University|
|Research Advisor:||Dr. Jennifer Hampton|
|Source of Support:||
This material is based upon work supported by the National Science Foundation under NSF-REU Grant No. PHY/DMR-104811, NSF-RUI Grant No. DMR-1104725, NSF-MRI Grant No. CHE-1126462 and NSF-MRI Grant No. CHE-0959282.
Porous thin films have been of interest due to their increased catalytic activity.
Previously porous films were developed by dealloying binary and ternary alloy
systems using noble metals. This project looked at altering the ratio of Ni+Fe/Cu,
a set of less noble metals, and characterizing the different ratios before
and after the dealloying process. Scanning electron microscopy (SEM) was utilized
to examine the surfaces and energy dispersive spectroscopy (EDS) was used to
characterize chemical composition. Deposition was performed with controlled
potential electrolysis, dealloying with linear sweep voltammetry, and capacitance
measurements with cyclic voltammetry. Analysis of EDS data shows that a larger
percentage of copper was removed from films with a high copper concentration.
Data also showed that iron tended to remain within the film while a small amount
of nickel was removed when the copper levels were increased.
Publications and Presentations: