摘要
为了实现于锅炉中直接制备附着碳纳米管的各类构件,采用自主研发的V形火焰法,在不锈钢基板上直接快速生长碳纳米管。通过SEM、XRD谱和Raman光谱分析了基板预处理温度和合成时间对碳纳米管生长过程,并对不同条件下产物的形态、结晶度进行了分析。通过EDS分析了附着碳纳米管的基板元素含量变化。结果表明:通过调整基板的焙烧温度,能够控制基板上碳管的密度和质量;焙烧温度为500～600℃时产物的产量和质量最优。实验条件下,铁是促进碳纳米管生长的活性位点;碳纳米管的生长经过碳的溶解、扩散和析出的过程。2 min后碳管开始生长,7 min得到的碳管均匀覆盖于基板表面,管壁笔直,杂质少。可见,V形火焰法能够直接在经过焙烧的不锈钢板上生长碳管,且合成时间短、预处理过程简单,为批量生产附着碳纳米管构件提供了简单有效的途径。
In order to realize the direct preparation of various components direct interaction with CNTs in the boiler,carbon nanotubes rapidly and directly grew on stainless steel substrate by self-developed V-type flame method.The growth process of carbon nanotubes was analyzed by SEM,XRD and Raman spectroscopy under different conditions,as well as morphology and crystallinity of the products.The element components of substrates after synthesis were analyzed by EDS.The results show that the density and quality of carbon nanotubes on the substrate can be controlled by adjusting the calcined temperature of substrate.The yield and quality of the product are optimal when the calcined temperature is 500~600℃.Under the experimental conditions,iron provide the active cites for synthesis of carbon nanotubes.The growth of carbon nanotubes experiences carbon dissolution,diffusion and precipitation and carbon nanotubes begin to grow after 2 min in the experiment.Carbon nanotubes obtained in 7 min are with uniform coverage,straight tube walls and few impurities.It can be seen that MWCNTs can directly synthesize on calcined stainless steel by V-type flame method and expend little time compared with other synthesis method,also the growth process is simple and easy to implement,which provides a effective way to produce structures with carbon nanotubes attached.
作者
孙亚萍
孙保民
翟刚
吴楚瑜
SUN Ya-ping;SUN Bao-min;Zhai Gang;WU Chu-yu(Key Laboratory of Condition Monitoring and Control for Power Plant Equipmentiliation, North China Electric Power University,Beijing 102206,China)
出处
《科学技术与工程》
北大核心
2018年第33期178-183,共6页
Science Technology and Engineering
基金
中央高校基本科研业务费专项(2018QN045)资助
关键词
碳纳米管
不锈钢基板
焙烧温度
合成时间
V形火焰法
carbon nanotube
stainless steel
calcined temperature
synthesis time
V-type flame
