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    Determination of Hydrazine and Phenylhydrazine Based on Formation of Gold Nanoparticles Stabilized with Non-ionic Surfactants

    , M.Sc. Thesis Sharif University of Technology Karami, Pari (Author) ; Hormozi Nezhad, Mohammad Reza (Supervisor)
    A simple and effective procedure is proposed for colorimetric detection of hydrazine and phenylhydrazine. It was found that the reduction of AuCl4- to gold nanoparticles (Au-NPs) by these compunds in the presence of Tween-20 as a stabilizing agent produced very intense surface plasmon resonance peak of Au-NPs. The plasmon absorbance of the Au-NPs allows the quantitative spectrophotometric detection of the hydrazine and phenylhydrazine. The calibration curves derived from the changes in absorbance at λ = 530 and λ = 550 nm for hydrazine and phenylhydrazine, respectively were linear with concentration of hydrazine and phenylhydrazine in the range of 1.0×10-6- 2.0×10-4 M, 5×10-6 - 4×10-4 M,... 

    Fabrication of Nanocomposite Modified Materials Based on Bi-Metalic Transition Metal Sulfide Using Copper (I) Oxide Nanospheres as a Catalytic Substrate for Designation of Amperometric Non-Enzymatic Hydrazine and Hydrogen peroxide Sensors

    , M.Sc. Thesis Sharif University of Technology Darvishmehr, Zahra (Author) ; Shahrokhian, Saeed (Supervisor)
    In this study, transition metal sulfide, with a high accessible surface and abundant electroactive centers, was used as an electrocatalyst to fabrication an electrochemical sensor of hydrazine and hydrogen peroxide. the direct growth of thin film of nanocomposite can be considered as an efficient method to modify the electrode surface, and the application of these modified electrodes as electrochemical sensors. the cobalt iron sulfide (CoFeS) nanosheets were directly grown on Cu2O nanospheres in order to design hierarchical nanocomposite by using efficient, inexpensive and fast method. Here, Cu2O nanospheres not only served as substrate, but also steer the CoFeS to attach on nanospheres... 

    Analysis and Conceptual Design of Incinerator for Damaging Hydrazine Matters

    , M.Sc. Thesis Sharif University of Technology Golsefatan, Mohammad (Author) ; Darbandi, Masoud (Supervisor)
    Hydrazine is considered as one of the most dangerouswaste materials from the environmental point of view. It can lead to both air and soil pollutions. Unfortunately,Hydrazine fuel is largly used in aerospace industry. Therefor, the aerospace industries are indirectly engaged with such pollutions.As a remedy incineration can be considered a very effective solution to destroy hydrazine fuel. In this thesis, we are faced with the conceptual design of an incinerator, which is going to be used for hydrazine incinerations.In this regard we are expected to consider all restrictions,which are required to be considered in a reed incinerator design and application. Therefore, we need to determine...