Preparation of Ti/SnO₂-Sb/Rare Earth Electrodes Containing Different Contents of Ni Intermediate Layer for Efficient Electrochemical Decolorization of Rhodamine B

Table 7

Kinetic parameters of 40 mg·L⁻¹ RhB in electrochemical processes by Ti/SnO₂-Sb-Ni/Eu electrodes modified with various Ni contents.

	Ni (0%)/Eu	Ni (1%)/Eu	Ni (2%)/Eu	Ni (3.5%)/Eu	Ni (5%)/Eu
Rate constants (k) (min^−1)	0.0152	0.0312	0.0589	0.0199	0.0147
R^2	0.9718	0.9933	0.9995	0.9766	0.9916