Initial

Concentration of MB (mg/L)

Pseudo-first order

Pseudo-second order

k₁ (min⁻¹)

R²

R²

ZnS NPs

ZnS/CDs

ZnS NPs

ZnS/CDs

ZnS NPs

ZnS/CDs

5

0.0090

0.0429

0.9949

0.9984

0.9391

0.9060

7.5

0.0097

0.0492

0.9995

0.9997

0.9790

0.9730

10

0.0042

0.0306

0.9985

0.9996

0.9271

0.9710

12.5

0.0033

0.0305

0.9984

0.9987

0.8592

0.9590

15

0.0027

0.0292

0.9796

0.9963

0.7236

0.9048