首页|Optimization process of porous carbon derived from coconut shell: A novel preparation condition and investigation on pore surface roughness
Optimization process of porous carbon derived from coconut shell: A novel preparation condition and investigation on pore surface roughness
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NSTL
Elsevier
? 2022The objective of this work was to understand the textural properties of porous carbon prepared under air conditions and simultaneously construct pore surface roughness/textural properties relationships. A controlled variable method was used for performing single-factor tests. Subsequently, the pore surface roughness of coconut shell-derived porous carbons (CSPCs) was calculated and correlated with their textural properties. Within a range, CSPC obtained under air conditions had a higher specific surface area as compared to CSPC prepared under N2, CO2, and vacuum conditions. With increasing the final temperature or holding time, the pore structure of CSPC first underwent a full development stage and then underwent an over-developed stage. Meanwhile, the optimized final temperature and holding time, i.e., 850 °C and 90 min, were determined. Hysteresis loops on N2 adsorption/desorption isotherms affect pore surface roughness. The correlation coefficient (R2) value (0.92) between mesopore volume (Vmeso) and pore surface roughness was the highest, followed by the R2 value (0.91) between mesopore surface area and pore surface roughness, and the R2 value (0.85) between macropore volume (Vmacro) and pore surface roughness. Therefore, the pore surface roughness depends not only on the Vmeso but also on the mesopore surface area, Vmacro, and total pore volume (Vt).
Air conditionsFractal dimensionPore surface roughnessPorous carbonTextural properties
Wang L.、Xie L.、Feng X.、Li X.、Ma H.、Zhou J.、Han G.、Yang D.
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College of Materials Science and Engineering Nanjing Forestry University
State Key Laboratory of NBC Protection for Civilian
NSTL
Elsevier
