均匀沉淀法制备碳纳米管/氧化锌复合材料的研究

Preparation of CNTs/ZnO composites by homogenous precipitation method

采用均匀沉淀法制备了碳纳米管(CNTs)负载氧化锌(ZnO)粒子复合材料,并利用扫描电子显微镜(SEM)、X光衍射分析(XRD)以及热失重分析(TGA)手段对复合粒子进行了表征。研究结果表明:锌离子浓度取0.4mol/L至1.0mol/L时,所得复合材料中的氧化锌粒子大小均匀细小,分散性较好,形貌以粒状为主,大小在40nm左右;纳米氧化锌粒子与碳纳米管结合力较强,CNTs/ZnO复合材料在超声作用下能够稳定存在;反应时间越长,氧化锌粒子含量越高,晶粒越大;热解温度越高,热解时间越长,氧化锌晶粒尺寸越大。

The nanocomposites particles of carbon nanotubes （CNTs） loaded zinc oxide （ZnO） nanoparticles were prepared using homogenous precipitation method. The composite particles were characterized by the means of scanning electronic microscope （SEM）, X-ray diffraction （XRD） and thermogravimetic analysis （TGA）, The results showed that the CNTs/ZnO composites were obtained when the concentration of zinc-ion was in the range from 0. 4mol/L to 1.0mol/L. The diameter of the ZnO particles with particles topography was small, about 40nm and well distributed. The interaction between ZnO particles and CNTs was strong and the composites were stable under ultrasonic treatment. With extending reaction time, both the content and crystallite size of zinc oxide particles were increased. Moreover, the erystallite size of zinc oxide particles was obviously increased when the thermal decomposition temperature was increased.