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

Table 3

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

	Ni (0%)/Gd	Ni (1%)/Gd	Ni (2%)/Gd	Ni (3.5%)/Gd	Ni (5%)/Gd
Rate constants (k) (min^−1)	0.0221	0.045	0.0861	0.0335	0.0306
R^2	0.9875	0.9806	0.9854	0.9899	0.9877