氧化亚铜/碳纳米管超细复合球的合成及性能研究

采用溶液法原位制备了氧化亚铜/多壁碳纳米管(Cu₂O/MWNTs)超细复合球. 通过扫描隧道显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射仪(XRD)、紫外-可见分光光度计(UV-vis)和差热分析(DSC)等手段对产品进行了形貌分析和性能检测. 结果表明: 碳纳米管均匀嵌镶在Cu₂O球中; 相比于同粒径纯Cu₂O球, 复合球的特征吸收峰发生蓝移, 复合球使高氯酸铵(AP)的高温分解温度进一步降低了11.5℃. 另外, 对复合球的形貌影响因素及生长机理进行了探讨, 发现明胶是复合物成球的关键, 而聚乙二醇影响复合球粒径的均匀性.

Synthesis and Properties of Cuprous Oxide/Carbon Nanotubes Composite Superfine Spheres

Cuprous oxide/ carbon nanotubes (Cu₂O/MWNTs) composite superfine spheres were fabricated in situ by solution method. The products were characterized via scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction pattern (XRD), UV-vis absorption spectrum and differential scanning calorimetry (DSC). The results show that the MWNTs are embedded in cuprous oxide spheres homogeneously. Compared with pure Cu₂O particle, the absorption peak of composite spheres has a tendency of blue shift, and the temperature of high temperature decomposition of ammonium perchlorate (AP) is further decreased by 11.5℃ when composite spheres act as the catalyst. In addition, the main influence on morphology and the formation mechanism of composite spheres are investigated. Results suggest that the gelatin play a key role in forming spheres and polyethylene glycol have great impact on the uniformity of spheres size.