RSM-BBD optimization of room-temperature synthesized ZIF-8 for synergistic adsorption-photocatalysis of RhB.

ABSTRACT: Three ZIF-8 nanomaterials with different Zn : 2-methylimidazole molar ratios (1 : 30, 1 : 50, and 1 : 70) were synthesized at room temperature in aqueous medium within 30 minutes without surfactants. Structural analyses confirmed the formation of mesoporous ZIF-8 with distinct morphologies, ranging from spherical assemblies to rhombic dodecahedra. Response Surface Methodology using a Box-Behnken design (RSM-BBD) was applied to optimize five parameters (pH, contact time, pollutant dose, linker amount, and catalyst weight) governing rhodamine B (RhB) removal. Under optimized conditions (pH 7, 70 mg catalyst, 10 ppm RhB, 60 min contact), ZIF-8 with a 1 : 70 ratio achieved a maximum adsorption capacity of 91.7 mg g^-1 and a removal efficiency of ∼91%, fitting well with the Langmuir m

SUBMITTER: Essalmi S 

PROVIDER: S-EPMC12621224 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature