Table 5.
Fifteen most used author keywords in different periods
| 2001–2007 | 2008–2014 | 2015–2021 | 2001–2021 | |||||
|---|---|---|---|---|---|---|---|---|
| P | Keywords | KO | Keywords | KO | Keywords | KO | Keywords | KO |
| 1 | Electrochemical oxidation | 77 | Electrochemical oxidation | 201 | Electrochemical oxidation | 302 | Electrochemical oxidation | 580 |
| 2 | Phenol(s) | 55 | Phenol(s) | 126 | Electro-Fenton | 279 | Electro-Fenton | 406 |
| 3 | Wastewater treatment | 41 | Electro-Fenton | 108 | Hydroxyl radical(s) | 143 | Phenol(s) | 288 |
| 4 | Anodic oxidation | 35 | Hydroxyl radical(s) | 90 | Wastewater treatment | 134 | Hydroxyl radical(s) | 259 |
| 5 | Oxidation | 31 | Boron-doped diamond | 74 | Electrooxidation | 117 | Wastewater treatment | 233 |
| 6 | Hydroxyl radical(s) | 26 | Anodic oxidation | 67 | Phenol(s) | 107 | Electrooxidation | 207 |
| 7 | Cyclic voltammetry | 26 | Electrooxidation | 67 | Anodic oxidation | 104 | Anodic oxidation | 206 |
| 8 | Electrooxidation | 23 | Wastewater treatment | 58 | Advanced oxidation process(es) | 89 | Boron-doped diamond | 181 |
| 9 | Electrocatalysis | 22 | Electrochemical degradation | 58 | Boron-doped diamond | 88 | Degradation | 144 |
| 10 | Electrolysis | 20 | Cyclic voltammetry | 48 | Degradation | 88 | Electrochemical degradation | 134 |
| 11 | Electro-Fenton | 19 | Mineralization | 46 | Water treatment | 84 | Advanced oxidation process(es) | 133 |
| 12 | Boron-doped diamond | 19 | Degradation | 46 | Mineralization | 71 | Water treatment | 129 |
| 13 | Wastewater | 17 | Wastewater | 38 | Electrochemical degradation | 67 | Mineralization | 127 |
| 14 | Hydrogen peroxide | 15 | Oxidation | 37 | Hydrogen peroxide | 57 | Cyclic voltammetry | 118 |
| 15 | Electrochemistry | 14 | Advanced oxidation process(es) | 36 | Azo dye(s) | 53 | Oxidation | 102 |
P position, KO keyword occurrence