Research Article
Green Synthesis of Nanostructure CeO2 Using Tea Extract: Characterization and Adsorption of Dye from Aqueous Phase
Table 1
The common technologies used to remove Congo red.
| Material | Year | Qmax (mg/g) removal efficiency | Degradation mechanism | Reference |
| Coir pith carbon | 2002 | 6.72 | Adsorption | [28] | Na-Bentonite | 2009 | 35.8 | Adsorption | [29] | Hollow zinc ferrite | 2011 | 16.58 | Adsorption | [30] | Cellulose/PVC/ZnO | 2016 | 90% | Photocatalytic | [31] | PdZnO-3 | 2016 | 98.2% | Photocatalytic | [32] | Fe0/PANI | 2017 | 98% | Sonocatalytic degradation | [33] | ZnO-ES | 2018 | 91.6% | Photocatalytic degradation | [34] | Fe2O3@CeO2–ZrO2 | 2018 | 95% | Fenton reaction | [35] | Desiccated coconut | 2021 | 49.46 | Adsorption | [36] | Cu–Ca–Al-layered double hydroxide | 2021 | 81 | Adsorption | [37] |
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