Experimental and theoretical insights into the adsorption mechanism of methylene blue on the (002) WO₃ surface.

ABSTRACT: This work investigates the efficiency of green-synthesized WO₃ nanoflakes for the removal of methylene blue dye. The synthesis of WO₃ nanoflakes using Hyphaene thebaica fruit extract results in a material with a specific surface area of 13 m²/g and an average pore size of 19.3 nm. A combined theoretical and experimental study exhibits a complete understanding of the MB adsorption mechanism onto WO₃ nanoflakes. Adsorption studies revealed a maximum methylene blue adsorption capacity of 78.14 mg/g. The pseudo-second-order model was the best to describe the adsorption kinetics with a correlation coefficient (R²) of 0.99, suggesting chemisorption. The intra-particle diffusion study supported a two-stage process involving surface adsorption

SUBMITTER: Hkiri K 

PROVIDER: S-EPMC11541561 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature