Supplementary Material for Chemical Communications
This journal is © The Royal Society of Chemistry 2003
Supporting information
Figure 3 shows the voltammograms of pre-reduced Ni nanowires, Cu nanowires and bulk Cu in
pH 4.5 phosphate buffer. It can be seen that the dissolved oxidation potential of Ni is negative to
that of Cu. Due to the large redox peak current, the large iR compensation exists and the
difference of redox peak potentials is large. There are two oxidation waves in CV of bulk Cu at
more positive anodic potential limit, which may indicate the oxidation of Cu proceeding in two
steps under the experimental condition.
I ()
-200
0
200
-1200 -800
-400
0
400
800
E (mV) vs SCE
Fig. 3. CVs of Cu nanowires (solid), Ni nanowires (dotted) and bulk Cu (dashed) in 0.1 M
phosphate buffer at pH 4.5. Scan rate: 50 mV/s