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.

通过从酚醛树脂和Fe（乙酰丙酮）₃进行电纺丝，在NH ₃气氛下碳化和HCl /水浸提以去除Fe物种，生产出超细分级多孔碳纤维（HPCFs）。对乙醇和丙酮和它们的孔结构的吸附性能用由聚丙烯腈（PAN）和Fe（乙酰丙酮）产生的纤维进行比较₃（HPCFs（PAN）），和没有的Fe（乙酰丙酮）酚醛树脂₃除了（的PCF）。结果表明，HPCFs和HPCFs（PAN）具有丰富的微孔和中孔层次分明的多孔性，而PCFs则占主导地位。铁（乙酰丙酮）_3的添加促进石墨化。分层的孔结构通过多层吸附增加了高压下乙醇和丙酮蒸气的吸收，而微孔结构则通过单层吸附促进了低压下的乙醇和丙酮蒸气的吸收。对于HPCF，发现乙醇和丙酮的最高吸收吸收，在25°C时分别为7.55和12.56 mmol g ^-1。证明了酚醛树脂比作为碳前体的PAN具有优越性。由于超细碳纤维的静电纺丝，其独立的特性对于除去挥发性有机化合物的吸附剂是有利的。