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Comparison present work status with the state-of-art literature.
| Material | H2S conc (ppm) | Working temp (°C) | Response (Ra/Rg) | Refs. |
|---|---|---|---|---|
| CuO-functionalized WO3 nanowires | 100 | 300 | 6.72 | 24 |
| WO3 nanowires | 100 | 300 | 1.84 | 24 |
| Pd-NPs/Pd-embedded WO3 nanofibers | 1 | 350 | 1.36 | 25 |
| 0.01 wt% Au | 2 | 300 | 7.5 | 26 |
| Hexagonal (h-) WO3 | 10 | 200 | ~ 7 × 10–9 | 27 |
| Ag-βVO3 nanowires | 50 | 250 | 1.04 | 28 |
| RGO/WO3 | 1 | 300 | 3.11 | This work |
