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.

MaterialYearQmax (mg/g) removal efficiencyDegradation mechanismReference

Coir pith carbon20026.72Adsorption[28]
Na-Bentonite200935.8Adsorption[29]
Hollow zinc ferrite201116.58Adsorption[30]
Cellulose/PVC/ZnO201690%Photocatalytic[31]
PdZnO-3201698.2%Photocatalytic[32]
Fe0/PANI201798%Sonocatalytic degradation[33]
ZnO-ES201891.6%Photocatalytic degradation[34]
Fe2O3@CeO2–ZrO2201895%Fenton reaction[35]
Desiccated coconut202149.46Adsorption[36]
Cu–Ca–Al-layered double hydroxide202181Adsorption[37]