摘要
以仲钼酸铵为前驱物,采用溶胶—凝胶法和氢气还原工艺制备了碳纳米管/Mo复合粉末材料.采用扫描电子显微镜(SEM)和X射线衍射(XRD)分析了微观形貌和相态组成.结果表明:在750℃还原保温3 h可制备出碳纳米管/Mo复合粉末,还原生成的Mo粉颗粒在碳纳米管周围聚集,使碳纳米管在Mo粉中均匀分散;高于800℃还原,碳纳米管与Mo反应生成Mo2C相;而低于750℃还原,则有MoO2相残存.
Abstract： Ammonium paramolybdate as a precursor, carbon nanotubes （CNTs） / Mo composite powders were prepared by sol-gel method followed by hydrogen reduction process. Scanning electron microscopy （SEM） and X-ray diffraction （XRD） were used to analyze the micrograph and phase composition. Results show that CNTs/Mo powders can be synthesized by hydrogen-reduction at 750℃ for 3h. CNTs are uniformly distributed between Mo powders because of the reduced Mo particles aggregating around the surface of CNTs. When the reduction temperature is a above 800%, MOEC is formed as the reaction of CNTs and Mo. However, when the reduction temperature is below 750℃, MoO2 phase is found in powders.
出处
《厦门理工学院学报》
2013年第1期29-32,共4页
Journal of Xiamen University of Technology
基金
国家自然科学基金项目(51071133)
福建省自然科学基金项目(2010J0131)
高性能陶瓷和超微结构国家重点实验室开放课题基金项目(SKL201113SIC)
关键词
碳纳米管
Mo复合粉末
制备
氢还原
Carbon nanotubes/Mo composite powder
preparation
hydrogen-reduction
