چكيده به لاتين
Today, water pollution is one of the environmental problems, including dye and ion contamination. In the meantime, methylene blue can be a dye contaminant due to various industries such as printing, paper, textiles, plastics, cosmetics, pharmaceuticals, tanning and etc. Various methods exist for the removal of dye contaminants such as methylene blue. One of them is the use of porous carbon derived from metal organic frameworks. In this thesis, using benzene dicarboxylic acid, zinc nitrate precursors and DMF Solvent, a metal organic framework called MOF-5 was synthesized by thermal solvent method. Subsequently, the material was subjected to heat treatment using a tube furnace at 800, 900, and 1000 ° C to obtain the porous carbon samples. In this study, in order to study the effect of acidity and its effect on the structure and characteristics of carbon produced by MOF-5, carbon synthesized at 800 oC using nitric acid was investigated. The resulting carbon samples at different temperatures were analyzed by various analyzes such as X-ray diffraction (XRD), Fourier spectroscopy (FTIR), Weight-loss analysis (TGA-DTA), Transmission electron microscopy (TEM), Raman spectrum, X-ray photoelectron spectroscopy (XPS), as well as nitrogen adsorption and desorption (BET) to determine the specific surface area and pore size distribution on the synthesized product. Then, the efficiency and capacity of these materials were investigated by methylene blue adsorption and compared with similar works. Finally, it was found that pyrolysis temperature and acid treatment are parameters that play important role in properties of MOF-5 derived porous carbons. Also, the carbon specimen obtained at 1000 oC was superior to the resulting carbon at 800 and 900 oC, so that it had a specific surface area of about 1340 m2.g-1 and oxygen function groups that wet the contact surface, as well as Abundant micro pores, displayed Attraction rate more than 2600 mg.g-1.
