Optimizing the Pore Structure of Bio-Based ACFs through a Simple KOH–Steam Reactivation
Abstract
:1. Introduction
2. Results and Discussion
2.1. Subsection Surface Morphology
2.2. Pore Structure
2.3. Chemical and Crystal Structure
2.4. Iodine Adsorption
3. Materials and Methods
3.1. Materials
3.2. Synthesis of Activated Carbon Fibers
3.3. Characterization of ACFs
3.4. Liquid-Phase Adsorption of Iodine
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Sample | SBET | Smicro | Smeso | Vtot | Vmicro | Vmeso | Vmeso/Vtot | Yield | Iodine Adsorption |
---|---|---|---|---|---|---|---|---|---|
(m2·g−1) | (m2·g−1) | (m2·g−1) | (cm3·g−1) | (cm3·g−1) | (cm3·g−1) | (%) | (%) | (mg·g−1) | |
A850-6-1 | 1301 | 976 | 209 | 0.679 | 0.4 | 0.216 | 31.8 | 43.2 | 1237 |
A850-6-1-750-1 | 1715 | 1295 | 316 | 0.952 | 0.538 | 0.354 | 37.2 | 17.5 | 1628 |
A850-6-1-850-1 | 2578 | 2196 | 452 | 1.425 | 0.966 | 0.424 | 29.7 | 9.6 | 1957 |
A850-6-2 | 1861 | 1115 | 466 | 1.105 | 0.484 | 0.473 | 42.8 | 29.6 | 1713 |
A850-6-2-750-1 | 2153 | 1463 | 581 | 1.342 | 0.656 | 0.627 | 46.7 | 10.3 | 1895 |
A850-3-2 | 1512 | 909 | 572 | 0.977 | 0.402 | 0.549 | 56.2 | 32.4 | 1597 |
A850-3-2-750-1 | 1845 | 1241 | 586 | 1.08 | 0.542 | 0.519 | 48 | 16.7 | 1764 |
A750-3-2 | 1013 | 694 | 261 | 0.589 | 0.285 | 0.27 | 45.8 | 45.2 | 1044 |
A750-3-2-750-1 | 1493 | 1083 | 300 | 0.857 | 0.447 | 0.348 | 40.6 | 21.6 | 1566 |
Sample | Atomic Concentration (%) | Data Derived of C 1s Peaks (%) | |||||
---|---|---|---|---|---|---|---|
C | O | C1 | C2 | C3 | C4 | C5 | |
A850-6-1 | 85.0 | 15.0 | 67.1 | 16.6 | 6.1 | 4.3 | 5.9 |
A850-6-1-750-1 | 87.3 | 12.7 | 62.5 | 18.7 | 7.8 | 5.6 | 5.4 |
A850-6-1-850-1 | 91.9 | 8.1 | 59.6 | 20.1 | 10.8 | 9.5 | - |
A850-6-2 | 92.8 | 7.2 | 65.0 | 13.3 | 8.3 | 7.7 | 5.7 |
A850-6-2-750-1 | 93.5 | 6.5 | 61.4 | 17.6 | 11.8 | - | 9.2 |
A850-3-2 | 92.2 | 7.8 | 67.1 | 10.5 | 9.0 | 8.6 | 4.9 |
A850-3-2-750-1 | 93.1 | 6.9 | 63.2 | 15.6 | 9.2 | 7.5 | 4.5 |
A750-3-2 | 86.5 | 13.5 | 67.9 | 15.8 | 7.7 | 4.7 | 3.9 |
A750-3-2-750-1 | 88.4 | 11.6 | 65.3 | 14.7 | 8.5 | 5.6 | 5.9 |
Sample | KOH Activation | Steam Activation | |||
---|---|---|---|---|---|
KOH/Fiber Ratio | Temperature (°C) | Time (h) | Temperature (°C) | Time (h) | |
A850-6-1 | 6 | 850 | 1 | - | - |
A850-6-1-750-1 | 6 | 850 | 1 | 750 | 1 |
A850-6-1-850-1 | 6 | 850 | 1 | 850 | 1 |
A850-6-2 | 6 | 850 | 2 | - | - |
A850-6-2-750-1 | 6 | 850 | 2 | 750 | 1 |
A850-3-2 | 3 | 850 | 2 | - | - |
A850-3-2-750-1 | 3 | 850 | 2 | 750 | 1 |
A750-3-2 | 3 | 750 | 2 | - | - |
A750-3-2-750-1 | 3 | 750 | 2 | 750 | 1 |
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Huang, Y.; Ma, E.; Zhao, G. Optimizing the Pore Structure of Bio-Based ACFs through a Simple KOH–Steam Reactivation. Materials 2016, 9, 432. https://doi.org/10.3390/ma9060432
Huang Y, Ma E, Zhao G. Optimizing the Pore Structure of Bio-Based ACFs through a Simple KOH–Steam Reactivation. Materials. 2016; 9(6):432. https://doi.org/10.3390/ma9060432
Chicago/Turabian StyleHuang, Yuxiang, Erni Ma, and Guangjie Zhao. 2016. "Optimizing the Pore Structure of Bio-Based ACFs through a Simple KOH–Steam Reactivation" Materials 9, no. 6: 432. https://doi.org/10.3390/ma9060432