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The EIS equivalent circuit fitting data (Rs, CPE, and Rct) and calculated rate constants of electro-Fenton reaction (K0).
| Sample | Rs (Ohm) | CPE ( × 10−5) | Rct (Ohm) | K0 |
|---|---|---|---|---|
| Fe0 | 65.62 | 1.73 | 7.09 × 105 | 6.25 × 10−10 |
| Fe1 | 55.55 | 6.57 | 9.92 × 104 | 4.47 × 10−9 |
| Fe2.5 | 62.19 | 5.17 | 9.74 × 104 | 4.55 × 10−9 |
| Fe5 | 66.58 | 8.06 | 5.86 × 104 | 7.57 × 10−9 |
| Fe7.5 | 26.36 | 18.17 | 1.84 × 104 | 2.40 × 10−8 |
