Опубликована: Янв. 1, 2024

Hexavalent chromium (Cr(VI)) is mainly detected as a harmful anion in aquatic ecosystems. In this study, novel nanohybrid layered clay composite decorated with polyaniline (PANI) (PANI/LDH@MMt) was successfully synthesized by layer-by-layer assembly strategy and utilized for Cr(VI) removal. Layered double hydroxide (LDH) montmorillonite (MMt) (LDH@MMt) can facilitate elimination through reinforced reduction. Some key experimental parameters were evaluated detail their potential impact on The results illustrated that PANI/LDH@MMt displayed high removal efficiency (>99%) at most appropriate conditions maintained over 95% performance even ionic coexistence natural water environments. Kinetic models, isothermal thermodynamic analyses also employed to explore the behavior PANI/LDH@MMt. Finally, mechanism analysis suggested could be captured electrostatic interaction of -NH-+, -N=+, –OH2+, exchange LDH, reduced Cr(III) -NH-. Subsequently, chelate -N=, −NH−, −OH, complex OH-, immobilized MMt cation exchange. This study presents new insight into reasonable construction highly efficient adsorbents low cost

Язык: Английский