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Synthesis of Graphene and Graphene Oxide and It’s Applications for Adsorption of Iodine
, M.Sc. Thesis Sharif University of Technology ; Outokesh, Mohammad (Supervisor) ; Khanchi, Alireza (Supervisor)
Abstract
Graphene is pure carbon in the form of a very thin, nearly transparent sheet, one atom thick. It is remarkably strong for its very low weight. Graphene is a novel particle that can improve adsorption properties. We use graphene for Iodine gas adsorption. Iodine-131 (usually in the chemical form of iodide) is a component of nuclear fallout, and is particularly dangerous owing to the thyroid gland's propensity to concentrate ingested iodine, where it is kept for periods longer than this isotope's radiological half-life of eight days. For this reason, if people are expected to be exposed to a significant amount of environmental radioactive iodine (iodine-131 in fallout), they may be instructed...
Laboratory Investigation of the Effective Pparametrs on the Particle Size Distribution at the Nanoscale During the Synthesis of Zirconium Oxide Powder and the Effectiveness of each on the Uniform Distribution of the Particle Size of the Final Powder
, M.Sc. Thesis Sharif University of Technology ; Ghotbi, Cyrus (Supervisor) ; Fotovat, Farzam (Supervisor) ; Malek Khachatourian, Adrineh (Supervisor)
Abstract
Reaction parameters in precipitation processes have a significant impact on the product characteristics. The process of formation of yttrium-stabilized zirconia precipitates was studied by co-precipitation method to investigate the parameters affecting particle size distribution. These studies aimed to investigate the reaction parameters and determine their effect on the size of the particles, taking into account the effects caused by the interaction of the parameters. To achieve this goal, the design of the experiment based on response surface methodology was used and five parameters of zirconyl chloride concentration, molar percentage of yttrium oxide, reaction time, mass percentage of...