Synthesis of Nb_3.49N_4.56O_0.44 nanoplatelets and NbS₂–Nb₂O₅ nanoflakes

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• 作者：Weibing Hu ; Zuli liu ; Guanghua Nie ; Yuanzhu Mi ; Yimin Zhao ; Kailun Yao
• 关键词：Nanostructures ; Inorganic compounds ; Chemical synthesis ; Electron microscopy
• 刊名：Materials Chemistry and Physics
• 出版年：2009
• 出版时间：15 February 2009
• 年：2009
• 卷：113
• 期：2-3
• 页码：511-514
• 全文大小：722 K

文摘

Novel polygonal Nb₂O₅ platelets have been generated by a simple solvothermal technique. Then, the polygonal Nb₂O₅ nanoflakes as a template react chemically with NH₃ and H₂S to generate polygonal Nb_3.49N_4.56O_0.44 nanoflakes and the polygonal NbS₂–Nb₂O₅ nanoflakes. Under optimal conversion conditions, the final geometry features of polygonal Nb_3.49N_4.56O_0.44 nanoflakes and the polygonal NbS₂–Nb₂O₅ nanoflakes are predetermined by the size and morphology of the Nb₂O₅ platelets. TEM observation has showed that the Nb₂O₅ nanoplatelets and Nb_3.49N_4.56O_0.44 nanoflakes consist of well-crystallized single crystals, the polygonal NbS₂–Nb₂O₅ nanoflakes are composed of phases of mixed oxide and sulphide. These new polygonal plate-like nanostructures are important for understanding nanostructure processing.