Plunkett Alexander, Kröning Katharina, Fiedler Bodo
Institute of Advanced Ceramics, Hamburg University of Technology, 21073 Hamburg, Germany.
Institute of Polymer and Composites, Hamburg University of Technology, 21073 Hamburg, Germany.
Nanomaterials (Basel). 2019 Apr 20;9(4):643. doi: 10.3390/nano9040643.
The in-situ nitrogen doping of multiwalled carbon nanotubes via chemical vapor deposition is investigated employing design of experiments (DoE). The establishment of empirical DoE models allowed for the prediction of product features as a function of process conditions in order to systematically synthesize tailor-made nitrogen-doped carbon nanotubes. The high informative content of this approach revealed effects of individual parameters and their interaction with each other. Hence, new valuable insights into the effect of temperature, injection rate, and carrier gas flow on the doping level were obtained which give motivation to approach further theoretical studies on the doping mechanism. Ultimately, competitive nitrogen-doped carbon nanotube features were optimized and yielded promising combinations of achieved doping level, graphitization, and aspect ratios in comparison to present literature values.
采用实验设计（DoE）研究了通过化学气相沉积法对多壁碳纳米管进行原位氮掺杂。建立的经验DoE模型能够预测作为工艺条件函数的产物特性，以便系统地合成定制的氮掺杂碳纳米管。这种方法的高信息量揭示了各个参数的影响及其相互作用。因此，获得了关于温度、注入速率和载气流对掺杂水平影响的新的有价值的见解，这为进一步开展关于掺杂机制的理论研究提供了动力。最终，优化了具有竞争力的氮掺杂碳纳米管特性，与现有文献值相比，获得了掺杂水平、石墨化和长径比的良好组合。
