Efficiently Visible-Light Driven Photoelectrocatalytic Oxidation of As(III) at Low Positive Biasing Using Pt/TiO2 Nanotube Electrode

Table 2 Kinetic parameters of photoelectrocatalytic oxidation of As(III) with different initial As(III) concentration

Initial As(III) concentration (mg/L)	C₀(Exp.) (mg/L)	C₀(cal.) (mg/L)	R ²	k _app (min⁻¹)
2.0	1.877	1.945	0.984	−0.0103
2.8	2.638	2.753	0.983	−0.0106
3.4	3.204	3.256	0.992	−0.0108
4.0	3.768	3.791	0.999	−0.0086
5.0	4.737	4.630	0.995	−0.0083
6.0	5.692	5.511	0.986	−0.0071