Table 2.

Electrochemical parameters of bare SPC and electrodes modified with CuO nanoparticles.

Electrodes	Epa	Epc	Ipa	Ipc	Aeff (cm2)	Ipa/Ipc	ΔEp
Bare SPC	0.32	−0.72	6.87 × 10−5	−1.76 × 10−4	6.90 × 10−5	3.90 × 10−1	1.04
SPC/wCuO	0.36	−0.67	1.66 × 10−4	−4.12 × 10−4	0.12	4.03 × 10−1	1.03
SPC/aCuO	0.37	−0.65	1.76 × 10-4	−3.94 × 10−4	0.08	4.47 × 10−1	1.02
SPC/eCuO	0.34	−0.66	1.27 × 10−4	−2.60 × 10−4	0.061	4.88 × 10−1	1.00
SPC/cCuO	0.44	−0.75	7.32 × 10−4	−1.03 × 10−3	0.196	7.11 × 10−1	1.19