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

Table 6

Kinetic parameters of 20 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)	0.0539	0.0634	0.1727	0.0361	0.0084
R^2	0.9716	0.9822	0.9769	0.9915	0.9922