Synthesis of vanadium carbide nanopowders by thermal processing and their characterization
Synthesis of vanadium carbide nanopowders by thermal processing and their characterization
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DOI：
10.1016/j.powtec.2007.06.011
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发表时间：
2008-01
影响因子：
5.2
通讯作者：
Zhiwei Zhao;Y. Liu;H. Cao;Shengji Gao;M. Tu
中科院分区：
文献类型：
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作者：
Zhiwei Zhao;Y. Liu;H. Cao;Shengji Gao;M. Tu
以钒酸铵（NH_4VO_3）和纳米炭黑为前驱体，通过热处理成功制备了纳米V_8C_7粉体。采用X射线衍射（XRD）、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和比表面积（BET）等方法对产物进行了表征。在~ 1100 °C反应1h可制得平均晶粒尺寸为32.6nm的单相V8 C7粉末，粉末分散性好，主要由平均粒径为~ 100 nm的均匀球形颗粒组成。
Vanadium carbide (V8C7) nanopowders were successfully prepared by thermal processing the precursor which originated from the mixture of ammonium vanadate (NH4VO3) and nanometer carbon black. The products were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Brunauer–Emmett–Teller (BET) methods. The single phase V8C7powders can be prepared at ∼ 1100 °C for 1 h with the average crystallite size of 32.6 nm and the powders show good dispersion and are mainly composed of uniformly-sized spherical particles with a mean diameter of ∼ 100 nm.