Highly Optimized Nitrogen-Doped MWCNTs through In-Depth Parametric Study Using Design of Experiments
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of Nitrogen-Doped MWCNTs
2.3. Sample Characterization
2.4. Design of Experiments and Model Calculation
3. Results and Discussion
3.1. Nitrogen Content
3.2. Graphitization
3.3. Aspect Ratio
3.4. Homogeneity
3.5. Optimized N-CNTs
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Coded Value | TR | ωpyridine | Qgas | QI |
---|---|---|---|---|
[°C] | [wt%] | [mL min−1] | [mL h−1] | |
−1 | 760 | 5 | 110 | 5.5 |
+1 | 960 | 95 | 330 | 10.5 |
−α | 760 | 5 | 110 | 5.5 |
+α | 960 | 95 | 330 | 10.5 |
Measured Properties | Input Values | |||||||
---|---|---|---|---|---|---|---|---|
xN | G | Id/Ig | η | ωFe | ωpyridine | Qgas | QI | TR |
[at%] | [%] | [wt%] | [wt%] | [mL min−1] | [mL h−1] | [°C] | ||
undoped | 63 | 0.60 | 6500 | 4.9 | 0.0 | 220 | 5.5 | 760 |
0.3 | 54 | 0.86 | 7143 | 2.3 | 5.0 | 175 | 7.4 | 843 |
0.8 ± 0.2 | 57 ± 2 | 0.77 ± 0.05 | 1333 ± 63 | 6.3 ± 0.5 | 22.0 | 110 | 10.5 | 820 |
1.0 | 54 | 0.87 | 1429 | 5.2 | 25.6 | 110 | 10.5 | 826 |
1.2 | 52 | 0.95 | 1625 | 5.0 | 36.3 | 110 | 10.5 | 834 |
1.9 | 49 | 1.04 | 1667 | 5.0 | 46.1 | 110 | 10.5 | 824 |
3.1 | 44 | 1.06 | 1250 | 5.6 | 62.1 | 110 | 10.5 | 831 |
4.7 | 42 | 1.40 | 593 | 3.5 | 95.0 | 330 | 5.5 | 828 |
6.1 | 40 | 1.48 | 888 | 3.7 | 93.0 | 110 | 5.5 | 823 |
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Plunkett, A.; Kröning, K.; Fiedler, B. Highly Optimized Nitrogen-Doped MWCNTs through In-Depth Parametric Study Using Design of Experiments. Nanomaterials 2019, 9, 643. https://doi.org/10.3390/nano9040643
Plunkett A, Kröning K, Fiedler B. Highly Optimized Nitrogen-Doped MWCNTs through In-Depth Parametric Study Using Design of Experiments. Nanomaterials. 2019; 9(4):643. https://doi.org/10.3390/nano9040643
Chicago/Turabian StylePlunkett, Alexander, Katharina Kröning, and Bodo Fiedler. 2019. "Highly Optimized Nitrogen-Doped MWCNTs through In-Depth Parametric Study Using Design of Experiments" Nanomaterials 9, no. 4: 643. https://doi.org/10.3390/nano9040643