Synthesis and Charecterization  of Nanosized vanadium Oxide

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Asjodi, Fateme | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40083 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Sadrnezhad, Khatiboleslam
Abstract:
This work examines the dissolution kinetics of Sodium meta vanadate in water medium. The effects of temperature, solid/liquid ratio, agitation speed on the leaching kinetics were investigated. the dissolution kinetics was controlled by the internal diffusion at the surface of the Sodium metavanadate particles. The activation energy for the leaching was2/13 kJ/mol. In the current project, we report the preparation of VO_2 nanorods crystals using a ethylenediaminetetracetic acid assisted and Cetyl Trimethyl Ammonium Bromide hydrothermal synthesis route. NH_4 Cl and NaVO_3 solution were used as the starting materials and vanadiumoxide crystals were obtained following growth at 180 °C for 24 h. And the effect of experiment conditions on the phase, morphology and composition of final products were investigated by Scanning electron microscopy, X-ray diffraction pattern, BET and TEM.
Keywords:
Kinetics Study ; Nanorod ; Hydrothermal Effect ; Vanadium Oxides ; Soduim Metavanadate

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