Preparation of Electrode Material Based to Bismuth Oxide-Attached Multiwalled Carbon Nanotubes for Lead (II) Ion Determination

Table 2

Parameters obtained from EIS data fitting.

	Electrodes
	CNTs	Bi2O3@CNTs-20	Bi2O3@CNTs-50	Bi2O3@CNTs-70
(Ω)	4.3	14.0	19.3	24.4
(F)
(Ω)	6.6	211.2	171.7	156.6
(F)
(Ω)	281.7	81.4	58.5	45.4
(Ω)	387.0	266.0	78.4	87.8