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).