Abstract
Cobalt zeolitic imidazolate framework (ZIF-67) has been successfully prepared with the yield that is significantly obtained in ethanol which is non-toxic and environmentally friendly. The texture structure, morphologies and physicochemical properties of ZIF-67 were analyzed by X-ray powder diffraction (PXRD), scanning electron microscope (SEM), fourier-transform infrared spectroscopy (FT-IR) and thermal gravimetric analysis (TGA). ZIF-67 was tested adsorption capability on methyl orange in water. The effects of time, pH, temperature, MO concentration and mass of adsorbents on the adsorption behavior were surveyed. The results showed that the ZIF-67 adsorption capacity on MO was higher than 160 mg.g-1 when pH is at 5.5, temperature is 35oC, adsorbent dose is 5 mg, initial MO concentration is 50 ppm and absorption time is 90 minutes. The material is able to reuse three times without lossing adsorption capacity.
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