Carbon Dioxide Adsorption on Carbon Nanofibers with Different Porous Structures
نویسندگان
چکیده
Electrospinning techniques have become an efficient way to produce continuous and porous carbon nanofibers. In view of CO2 capture as one the important works for alleviating global warming, this study intended synthesize polyacrylonitrile (PAN)-based activated nanofibers (ACNFs) using electrospinning processes capture. Different structures PAN-based ACNFs were prepared, including solid, hollow, nanofibers, where poly(methyl methacrylate) (PMMA) was selected sacrificing core or pore generator. The results showed that PMMA could be removed successfully at a carbonization temperature 900 °C, forming hollow ACNFs. diameters ranged from 500 nm, shell thickness approximately 70–110 nm. solid microporous materials, while characterized by hierarchical structures. possessed higher specific surface areas than ACNFs, exhibited highest microporosity (94%). adsorption capacity on highly dependent ratio V<0.7 nm Vt, Vmi N-containing functional groups. breakthrough curves curve-fitted well with Yoon Nelson model. Furthermore, 10 cyclic tests demonstrated are promising adsorbents.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2021
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app11167724