The increasing industrial and human activities have caused an increase on the discharge of wastewater into the water resources. Phenol is a major pollutant found in the wastewater of several industries. Phenol is very dangerous, harmful, and causes excretion of dark urine, impaired vision, diarrhea and sour mouth. Phenolic compounds from different industrial activities such as refineries, pesticides, insecticides, pharmaceutical, etc., are found among the main pollutants of water. These compounds are toxic and their degradation is difficult; thus, it is important the development of effective methods and materials that allow the removal of these pollutants from water. There are various methods available for the recovery and removal of phenol from aqueous solutions. The most common processes are solvent extraction, ion exchange, adsorption, oxidation and catalytic Liquid-Phase oxidation. These methods have been found to be useful for the removal of phenol. Adsorption method is a powerful treatment processes for the removal of pollutant from water. Adsorption process is one of the effective methods with the advantages of high treatment efficiency and no harmful by-product to treat water. Some materials commonly used on the removal of phenolic compounds by adsorption are activated carbon, clays, zeolites, membranes and recently has emerged a new class of adsorbents, the nanomaterials. MOFs are new class of porous solid materials with crystalline three-dimensional networks. Zeolitic imidazolate frameworks (ZIFs) are subfamily of MOFs. Graphene is a kind of novel and interesting carbon material and has attracted great attentions from both the experimental and theoretical scientific communities in recent years. Graphene is a new class of two-dimensional carbon nanostructure with one-atom thickness. Graphene oxide promised to be an excellent adsorbent due to its high specific surface area and excellent adsorption performances, with a high adsorption capacity and fast adsorption rate.
In this study synthesis and characterization of Co-ZIF@GO was studied. GO was prepared by Humer method. Co-ZIF also was synthesis and then nano composite Co-ZIF@GO was prepared. The as prepared samples were characterized by FTIR, Raman spectroscopy, FESEM, XRD and TGA methods. Adsorption of phenol from aqueous solution by Co-ZIF, GO and Co-ZIF@GO was investigated. Effect of pH, contact time and mass of sorbent for adsorption of phenol were considered.
- Synthesis and characterization of Co-ZIF, GO, Co-ZIF@GO nanocomposite
- Use of Co-ZIF, GO, Co-ZIF@GO nanocomposite for water treatment
- Investigation of Co-ZIF on GO for phenol removal.