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Materials 2016, 9(6), 432; doi:10.3390/ma9060432

Optimizing the Pore Structure of Bio-Based ACFs through a Simple KOH–Steam Reactivation

College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
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Academic Editor: Rafael Luque Alvarez de Sotomayor
Received: 21 March 2016 / Revised: 15 May 2016 / Accepted: 24 May 2016 / Published: 31 May 2016
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Abstract

Highly microporous bio-based activated carbon fibers (ACFs) were prepared through a simple reactivation method. Sawdust, as the starting material, was liquefied and melt-spun to produce the precursor fibers. Then, the precursor fibers were activated by KOH and reactivated by steam. By varying the conditions of the two activation processes, the formation mechanism of the pore structure was studied, and the result showed that steam reactivation has a positive effect on the development of microporosity. The sample with the optimal condition exhibited the highest specific surface area of 2578 m2·g−1 as well as the largest pore volume of 1.425 cm3·g−1, where micropores contributed 70.3%. Due to its excellent texture properties, the ACF exhibited a high adsorption capacity of 1934 mg/g for iodine. View Full-Text
Keywords: biomass materials; activation carbon fiber; reactivation; microporosity; iodine adsorption biomass materials; activation carbon fiber; reactivation; microporosity; iodine adsorption
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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.

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