عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Urania nanostructures were synthesized by a facile, which is a simple and clean and straightforward deposition method, for two different deposition time durations. The morphology and structures of the products were characterized by the X-ray diffraction analysis (XRD) and Scanning Electronic Microscopy (SEM). The SEM images indicated that the morphology of the synthesized samples for 10 minutes was composed of a coin-like structure with a nano-scale dimension in a narrow- size distribution. The results indicated that the deposition time affects the morphology while it does not affect the structure. The XRD results identified the sample structures as UO2 crystal. The chemical composition of different points of the sample surface was determined by the energy dispersive spectroscopy (EDS) technique and the results clarified that the samples have a homogeneous composition of uranium oxide. The synergistic properties of the substrate surface, and uranium ions are responsible for the formation of an outstanding and a novel structure.
10. Q. Wang, et al, Synthesis of uranium oxide nanoparticles and their catalytic performance for benzyl alcohol conversion to benzaldehyde, J. Mater. Chem. 18 (2008) 1146–1152.
11. H.M. Wu, Y.G. Yang, Y.C. Cao, Synthesis of Colloidal Uranium−Dioxide Nanocrystal, J. Am. Chem. Soc. 128 (2006) 16522–16523.
12. D. Hudry, et al., Synthesis of transuranium-based nanocrystals via the thermal decomposition of actinyl nitrates, Chem. Eur. J. 18 (2012) 8283–8287.
13. M. Pradhan, et al, Morphology controlled uranium oxide hydroxide hydrate for catalysis, luminescence and SERS studies, Cryst. Eng. Comm. 13 (2011) 2878–2889.
14. R. Zhao, et al., A facile additive-free method for tunable fabrication of UO2 and U3O8 nanoparticles in aqueous solution, Cryst. Eng. Comm. 16 (2014) 2645–2651.
15. S. Anthonysamy, et al, Combustion synthesis of urania–thoria solid solutions, Journal of nuclear materials, 278 (2000) 346-357.
16. L. Wang, et al., Template Free Synthesis and Mechanistic Study of Porous Three‐Dimensional Hierarchical Uranium‐Containing and Uranium Oxide Microspheres, Chem. Eur. J., 20 (2014) 12655–12662.
17. H. Yu , et al, Electrochemical Preparation of N‐Doped Cobalt Oxide Nanoparticles with High Electrocatalytic Activity for the Oxygen‐Reduction Reaction, Chemistry of European Journal, 20 (2014) 457-3462.
21. H.M. Shiri, et al, Electrosynthesis of Y2O3 nanoparticles and its nanocomposite with POAP as high efficient electrode materials in energy storage device: Surface, density of state and electrochemical investigation, Solid State Ionics, 338, (2019) 87-95.
22. T. Yousefi, et al, Electrodeposition of Fe2O3 nanoparticles and its supercapacitive properties, Curr. Appl. Phys. 12 (2012) 544-549.
23. T. Yousefi, et al, Electrochemical supercapacitive performance of potentiostatically cathodic electrodeposited nanostructured MnO2 films, Mater. Sci. Semicond. Process. 16 (2013) 868–876.
24. T. Yousefi, et al, Hausmannite nanorods prepared by electrodeposition from nitrate medium via electrogeneration of base, J. Taiwan Inst. Chem. Eng. 43 (2012) 614–618.
25. Q. Zhang, et al, CuO nanostructures: Synthesis, characterization, growth mechanisms, fundamental properties, and applications, Prog. Mater. Sci. 60 (2014) 208-337.
26. T. Yousefi, et al, Facile synthesis, morphology and structure of Dy2O3nanoparticles through electrochemical precipitation, Rare Met. 35 (8) (2016) 637–642.
27. J. Yang, et al., Formation of two-dimensional transition metal oxide nanosheets with nanoparticles as Intermediates, Nature Materials, (2019 inpress).