Mo_xP_y nanoparticles supported on mesh structural carbon from biomass for rapid selective dyes adsorption

Highly porous carbon-based materials with 3-dimensional mesh structure as an adsorbent that have been used extensively in environmental treatment, however, it remains challenging to improve performance and to reduce costs. A novel Mo_xP_y nanoparticles anchored mesh structural biomass carbon (Mo_xP_y/MSBC) was prepared from renewable seaweed and applied as an efficient absorbent for the selective adsorption of dyes. The mesh structure of provides a powerful support for the Mo_xP_y nanoparticles and could protect the nanoparticles from being lost. Meanwhile, a better 3D mesh structure obtained endows MSBC a high surface area with a large number of active interaction sites. The Mo_xP_y/MSBC composite exhibits excellent selective adsorption properties and high adsorption capacity for methyl blue (MB) and rose bengal (RB) at distinctive pH and rapid removal rates within 5 min at 298 K. The adsorption kinetics, isotherm and thermodynamics were determined. In addition, the regeneration of the Mo_xP_y/MSBC could be accomplished in only three minutes through a simple method by using the absolute alcohol. Therefore, the simple synthesis, high efficacy, excellent selectivity and regenerability in aqueous medium enable the hybrid nanocomposites as excellent candidates to selective removal processes of dyes.