Low-Valent Vanadium Oxide Nanostructures with Controlled Crystal Structures and Morphologies

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• 作者：Guicun Li ; Kun Chao ; Hongrui Peng ; Kezheng Chen ; Zhikun Zhang
• 刊名：Inorganic Chemistry
• 出版年：2007
• 出版时间：July 9, 2007
• 年：2007
• 卷：46
• 期：14
• 页码：5787 - 5790
• 全文大小：498K
• 年卷期：v.46,no.14(July 9, 2007)
• ISSN：1520-510X

文摘

Low-valent vanadium oxide nanostructures have been synthesized in large quantities using commercial V₂O₅ powderas the precursor by a facile reduction method. The crystal structures and morphologies of vanadium oxidenanostructures can be adjusted by altering the concentrations and types of reductants. VO₂(B) nanostructures arefabricated using oxalic acid as the reductant. VO₂(B) nanobelts with widths of 80-150 nm, thicknesses of 20-30nm, and lengths up to several micrometers can evolve to olive-like nanostructures composed of nanosheets withthicknesses of several nanometers and lateral dimensions of several micrometers as the concentration of oxalicacid increases. H₂V₃O₈ nanobelts with widths of 200-300 nm, thicknesses of 10-20 nm, and lengths up to several10s of micrometers are obtained under the reduction of V₂O₅ powder with ethanol. The belt-shaped morphologiesof H₂V₃O₈ are not affected by the concentration of ethanol.