Table 1. Electroanalytical characteristics of screen printed electrodes (SPE) modified with fCNT/TiO2 obtained in a 5 mM solution of potassium hexacyanoferrate. The potential values and peaks of oxidation and reduction of potassium ferricyanide are presented for a potential sweep rate of 50 mV/s. (fCNT – functionalized carbon nanotubes).
|
Electroanalytical characteristics |
Electrodes |
|
|
SPE/fCNT/TiO2 |
SPE |
|
|
ERed, V (vs. Ag/AgCl) |
0,169±0,017 |
0,087±0,008 |
|
EOx, V (vs. Ag/AgCl) |
0,256±0,014 |
0,421±0,041 |
|
ΔE, V (vs. Ag/AgCl) |
0,084±0,009 |
0,499±0,052 |
|
E1/2, V (vs. Ag/AgCl) |
0,213±0,015 |
0,167±0,018 |
|
IRed, μA |
-23,37±2,06 |
6,16±0,50 |
|
IOx, μA |
24,97±1,82 |
5,00±0,48 |
|
Selectroactive, см2 |
0,1355 |
0,0024 |
Note. The relative standard deviation was estimated for at least three measurements (n = 3).