الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Thesis aims to degrade some environmental pollutants by using MIL-101 Al nanoparticles which modified by different percentages of graphene oxide like 1 wt%, 3 wt%, 5 wt % and 10 wt%. These composites enhance the adsorption of organic dyes and Pb2+. Another dopants like active carbon is incorporated into MIL-101 Al nanoparticles with different percentage like 1 wt%, 5 wt%, 10 wt%, 15 wt% and 20 wt%. These adsorbents were used in adsorption of methylene blue, Brilliant green, congo red and Pb2+ under UV/visible light.Structural characterization of the prepared samples was determined using TEM, SEM, X‐ray, FTIR and UV/vis spectroscopy.For X‐ray diffraction patterns, it showed a crystalline peak for graphite powder at 2θ = 26.4° with d‐spacing size 0.34 nm, after oxidation to a crystalline peak was appeared at 2θ = 10.56° and the d‐spacing increased to 0.82 nm. After modification the characteristic peak of GO sheets disappeared due to the amount of GO is very small to be shown in the charts. By modifing MIL-101 Al by using GO and AC, it was noticed that MIL-101 preserved its crystalinity shape. Small amount of GO and AC do not affected alot the crystal lattice. By increasing its quantity it has a bad effect on crystal lattice.FTIR spectra of graphite flakes and graphene oxide. Graphene oxide spectrum shows band characteristic to OH stretching vibration function group present during oxidation of graphite flakes. Also, at C=O stretching vibration, C=C stretching vibration, unoxidized graphite domains, at C-OH stretching vibration, and at 1051 cm-1 C-O stretching vibration. The FTIR spectra for the loaded graphene oxide on MIL-101 Al adsorbents show the same function groups. The band of OH stretching vibration, C=O stretching vibration and C-O stretching vibration. The characteristic bands are due to the adsorption of H2O. The O-M-O due to Al metal attached with oxygen in terephthalic acid the used ligand.SEM images revealed that the GO sheets consisted of thin, randomly aggregated and crumpled sheets closely to each other forming a disordered solid on the surface of MIL-101 Al. The loaded of AC showed in the surface as irrugular shapes.TEM images show that MIL-101 Al nanoparticles have hexagonal shape. TEM images of loaded GO on MIL-101 Al present good distribution of GO nanoparticles on the surface of MIL-101 Al. In case of AC/MIL-101 All, TEM images also show good distribution.we found that, 1 wt% GO/MIL-101 Al and 1 wt% AC/MIL-101 Al are the best percentage prepared in case of two dopants. By increasing the dopant concentration, the adsorption efficiency decreased. Thus, may be due to the dopant block the active sites present at the surface of prepared nanoparticles. By increasing the concentration of dye, the adsorption efficiency decreased due to competion of dye molecules to enter active sites. By increasing the dose of adsorbents, the percentage of adsorption of pollutants increased. The optimum pH for adsorption of methylene blue is 10.