Ultrafine hierarchically porous carbon fibers and their adsorption performance for ethanol and acetone
Source abstract
Abstract
Ultrafine hierarchically porous carbon fibers (HPCFs) were produced by electrospinning from phenolic resin and Fe(acetylacetonate)3, carbonization under an NH3 atmosphere and HCl/water leaching to remove the Fe species. Their adsorption performance for ethanol and acetone and their pore structure were compared with fibers produced from polyacrylonitrile (PAN) and Fe(acetylacetonate)3 (HPCFs(PAN)), and phenolic resin without the Fe(acetylacetonate)3 addition (PCFs). Results indicate that HPCFs and HPCFs(PAN) are hierarchically porous with abundant micropores and mesopores while PCFs are dominantly microporous. The addition of Fe(acetylacetonate)3 promotes graphitization. The hierarchical pore structure increases the uptake of both ethanol and acetone vapors at high pressures by multilayer adsorption while the microporous structure contributes to the uptake at low pressures by monolayer adsorption. The highest ethanol and acetone adsorption uptakes were found for the HPCFs, and are 7.55 and 12.56 mmol g−1 at 25 °C, respectively. Superiority of phenolic resin to PAN as the carbon precursor is demonstrated. The freestanding characteristic of the ultrafine carbon fibers as a result of their electrospining is advantageous as an adsorbent for the removal of volatile organic compounds.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Electrospun Nanofibers in Biomedical Applications · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. Facile synthesis of ultrahigh-surface-area hollow carbon nanospheres for enhanced adsorption and energy storage [J]10.1038/ncomms8863 ↗
2. Adsorption and desorption of small molecule volatile organic compounds over carbide-derived carbon [J]10.1016/j.carbon.2013.10.063 ↗
3. Ordered mesoporous carbons and their corresponding column for highly efficient removal of microcystin-LR [J]10.1039/c3ee41775a ↗
4. A fine-tuned fluorinated MOF addresses the needs for trace CO2 removal and air capture using physisorption [J]10.1021/jacs.6b05345 ↗
5. Coupling fullerene into porous aromatic frameworks for gas selective sorption [J]10.1039/C6SC00134C ↗
6. A comparison of microstructure and adsorption characteristics of activated carbons by CO2 and H3PO4 activation from date palm pits [J]10.1016/S1872-5805(12)60020-1 ↗
7. Graphitic nanopores: Water capture in carbon cuboids [J]10.1038/nchem.2193 ↗
8. Hysteresis in the cyclic adsorption of acetone, ethanol and ethyl acetate on activated carbon [J]10.1016/S0008-6223(99)00224-9 ↗
9. Porous carbon nanosheets with precisely tunable thickness and selective CO2 adsorption properties [J]10.1039/c3ee41906a ↗
10. Porous imine-based networks with protonated imine linkages for carbon dioxide separation from mixtures with nitrogen and methane [J]10.1039/C5TA02504D ↗
11. Water adsorption in porous metal-organic frameworks and related materials [J]10.1021/ja500330a ↗
12. A novel MOF/graphene oxide composite GrO@MIL-101 with high adsorption capacity for acetone [J]10.1039/C3TA15086K ↗
13. Putting an ultrahigh concentration of amine groups into a metal-organic framework for CO2 capture at low pressures [J]10.1039/C6SC00836D ↗
14. Adsorption and thermal regeneration of acetone and toluene vapors in dealuminated Y-zeolite bed [J]10.1016/j.seppur.2010.12.022 ↗
15. Role of amine structure on carbon dioxide adsorption from ultradilute gas streams such as ambient air [J]10.1002/cssc.201200196 ↗
16. Amine-bearing mesoporous silica for CO2 and H2S removal from natural gas and biogas [J]10.1021/la903238y ↗
17. Carbon nanofibers with radially grown graphene sheets derived from electrospinning for aqueous supercapacitors with high working voltage and energy density [J]10.1039/c3nr33927k ↗
18. Electrospinning of nanofibers: Reinventing the wheel? [J]10.1002/adma.200400719 ↗
19. Synthesis of reduced graphene oxide/phenolic resin-based carbon composite ultrafine fibers and their adsorption performance for volatile organic compounds and water [J]10.1039/c3ta10545h ↗
20. Preparation and characterization of graphene-reinforced polyacrylonitrile-based carbon nanofibers [J]
21. Adsorption of toluene on carbon nanofibers prepared by electrospinning [J]10.1016/j.scitotenv.2008.01.005 ↗
22. Electrospun preparation of microporous carbon ultrafine fibers with tuned diameter, pore structure and hydrophobicity from phenolic resin [J]10.1016/j.carbon.2013.09.074 ↗
23. Carbon-based supercapacitors produced by activation of graphene [J]10.1126/science.1200770 ↗
24. Porous materials with optimal adsorption thermodynamics and kinetics for CO2 separation [J]10.1038/nature11893 ↗
25. Structurally designed synthesis of mechanically stable poly(benzoxazine-co-resol)-based porous carbon monoliths and their application as high-performance CO2 capture sorbents [J]10.1021/ja203857g ↗
26. Synthesis of functionalized 3D hierarchical porous carbon for high-performance supercapacitors [J]10.1039/c3ee41638k ↗
27. Fabrication and nanostructure control of super-hierarchical carbon materials from heterogeneous bottlebrushes [J]10.1039/C6SC03961H ↗
28. Smallwood · 1996
29. Improved graphitic structure of continuous carbon nanofibers via graphene oxide templating [J]10.1002/adfm.201300653 ↗
30. Sulfur-containing activated carbons with greatly reduced content of bottle neck pores for double-layer capacitors: a case study for pseudocapacitance detection [J]10.1039/c3ee41182f ↗
31. On a theory of the van der Waals adsorption of gases [J]10.1021/ja01864a025 ↗
32. Distorted graphene sheet structure-derived latent nanoporosity [J]10.1021/acs.langmuir.6b00483 ↗
33. Competitive adsorption of a benzene-toluene mixture on activated carbons at low concentration [J]10.1016/j.carbon.2005.12.001 ↗
34. A novel activating strategy to achieve highly porous carbon monoliths for CO2 capture [J]10.1039/C3TA14684G ↗
35. Adsorption of volatile organic compounds onto activated carbon cloths derived from a novel regenerated cellulosic precursor [J]10.1016/j.jhazmat.2009.12.014 ↗