Hydrothermal synthesis of novel MIL-100(Fe)@SBA-15 composite material with high adsorption ef fi ciency towards dye pollutants for wastewater remediation

MIL-100(Fe)@SBA-15 (1) was synthesized as a composite material using SBA-15 and precursors of MIL-100 (Fe) with the hydrothermal method. The structural characteristics, surface area, and morphology of the synthesized materials were measured by several analyses. The BET surface area increased from 797 m(2) g(-1) for SBA-15 to 1564 m(2) g(-1) for composite 1. The synthesized materials, SBA-15, MIL-100(Fe), and composite 1, were used for removal of methylene blue (MB), rhodamine B (RB), methyl orange (MO), and alizarin yellow R (AY) organic dyes from aqueous solution. Results revealed that composite 1 (25 mg) could adsorb most of the dyes with a maximum adsorption capacity of 38,32,30, and 41 mg g(-1) for MB, RhB, MO, and AY solutions (50 mL,50 mg L-1), respectively. Moreover, composite 1 showed ultrafast and high adsorption efficiency to removal mixed cationic and anionic dye solutions. The isotherm, kinetic and thermodynamic studies for adsorption of MB solution with the composite 1 were evaluated and discussed thoroughly. Herein we suggest composite 1 as a novel adsorbent with high commercial potential for wastewater treatment because of easy preparation, good structure stability, and simultaneous adsorption of several dye solutions in a short time. (c) 2020 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.