Graphene and graphene-silver nanocomposites have been prepared by the Hummers modified method and chemical reduction process in a simple one-pot technique. The electronic microscopes (scanning and transmutation), have been used to diagnose morphology and topography of nanocomposites, and X-ray diffraction is used to characterize the structure of the nanocomposites. The results reveal that the silver nanoparticles were effectively composited onto the nanosheets of the graphene within the diameter of silver particles, ranging from 10 to 22 nanometers. In present study, the synthesized nanocomposites are used as an adsorbent for Cibacron Blue P-6B dye from its aqueous solutions through diverse temperatures (15, 25, 35, 45, and 55 ◦C). Additionally, the thermodynamic parameters (ΔS, ΔH, ΔG) and the order of the adsorption process were calculated.
Zinc oxide nanotubes were synthesized by electrochemical deposition on zinc substrate using different Voltages (10, 20, 50) volts and different time periods of deposition (5, 10, 15, 20, 30, 45, 60) minutes. Zinc oxide nanotubes were characterized by atomic force microscope, optical microscope with a magnification (1000X), X-ray diffraction technique and thickness measuring device. Dealt with the studying of the effectiveness of the prepared nanotubes in the adsorption of ionic mercury and lead in them in water solutions using different temperature (15, 25, 35, 45, 55) ?C Also we calculate thermodynamic parameters (?S, ?H, ?G).
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