HKUST-1 and Al-MCM-41/HKUST-1 composites were successfully synthesized by a solvothermal method in a mixture of N-N 0 -dimethylformamide (DMF), ethanol and water in a ratio of 1:1:1 at 100°C for 10 h, with mass variations of Al-MCM-41 at 3, 5 and 7% toward the mass of HKUST-1, respectively. The results of the XRD analysis showed characteristic peaks of HKUST-1 at 2h of 6.61, 9.39, 11.51 and 13.31°with high intensities. The addition of mesoporous aluminosilicate, Al-MCM-41, did not significantly

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... alter the diffraction pattern except for the decrease in the intensity of the characteristic peaks. The FTIR spectra showed the presence of absorption bands typical of both HKUST-1 and Al-MCM-41 materials. HKUST-1 and Al-MCM-41/HKUST-1 composites showed exceptional performance in rapidly removing methylene blue at greater than 95% removal in less than 14 min. Isothermal and kinetic adsorption studies follow the modeling of the Freundlich isotherm and pseudo-second order kinetics.