Research Article

Green Synthesis of Nanostructure CeO2 Using Tea Extract: Characterization and Adsorption of Dye from Aqueous Phase

Table 4

Fitting results for the first-order and second-order kinetic models.

First-order modelSecond-order model
SampleQexp (mg/g)k1 (1/min)R2Qfit (mg/g)k2 (1/min)R2Qfit (mg/g)

873K–CeO29.55 ± 0.210.020.4441.66 ± 1.230.110.999.50 ± 0.54
Comm-CeO28.61 ± 0.170.030.3730.30 ± 0.870.250.994.07 ± 0.22