Premium
Preparation of ultra‐thin PAN‐based activated carbon fibers with physical activation
Author(s) -
Su YenJu,
Ko TesHao,
Lin JuiHsiang
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27982
Subject(s) - polyacrylonitrile , scanning electron microscope , microporous material , materials science , activated carbon , adsorption , chemical engineering , specific surface area , volume (thermodynamics) , morphology (biology) , composite material , chemistry , catalysis , polymer , organic chemistry , physics , quantum mechanics , biology , engineering , genetics
This study elucidates the stabilization and activation in forming activated carbon fibers (ACFs) from ultra‐thin polyacrylonitrile (PAN) fibers. The effect of stabilization time on the properties and structure of resultant stabilized fibers was investigated by thermal analysis, X‐ray diffraction (XRD), elemental analysis, and scanning electron microscopy (SEM). Stabilization was optimized by the pyrolysis of ultra‐thin PAN fibers in air atmosphere at 280°C for 15 min, and subsequent activation in steam at 1000°C for 0.75 to 15 min. Resultant ACFs were characterized by N 2 adsorption at 77 K to evaluate pore parameters, XRD to evaluate structure parameters, and field emission scanning electron microscopy (FESEM) to elucidate surface morphology. The produced ACFs had surface areas of 668–1408 m 2 /g and a micropore volume to total pore volume ratio from 78 to 88%. Experimental results demonstrate the surface area and micropore volume of 1408 m 2 /g and 0.687 cm 3 /g, respectively, following activation at 1000°C for 10 min. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008