Table 1.

CV and EIS performance data for modified and bare electrodes in [Fe(CN)₆]^3−/4−.

Electrode	IOxi (µA)	E (mV)	IRed (µA)	E (mV)	ΔE (mV)	Rs (Ω)	Rct (Ω)	C (µF)	W (mΩ)
Bare GCE	45.83	252	−44.61	32	220	128.4	2610	0.49	0.143
MWCNTs/GCE	60.71	223	−61.61	94	129	113.9	634	0.91	0.167
Au@TiO2/GCE	61.81	213	−63.04	87	126	118.4	529	1.13	0.149
Au@TiO2/MWCNTs/GCE	69.77	228	−69.56	113	115	124.8	281	1.00	0.266