Preparation and characterization of polymer-based spherical activated carbons with tailored pore structure
| Autor: | Quanxing Zhang, Zhaolian Zhu, Aimin Li, Sheng Zhong, Fuqiang Liu |
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| Rok vydání: | 2008 |
| Předmět: |
Aqueous solution
Materials science Polymers and Plastics Scanning electron microscope General Chemistry Microporous material Divinylbenzene Surfaces Coatings and Films chemistry.chemical_compound Adsorption Chemical engineering chemistry Polymer chemistry Materials Chemistry medicine Porosity Activated carbon medicine.drug BET theory |
| Zdroj: | Journal of Applied Polymer Science. 109:1692-1698 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.28304 |
| Popis: | A series of spherical activated carbons (SACs) with different pore structure were prepared from divinylbenzene-based polymer through CO2 activation. The effect of activation temperature and retention time on the yield and textural properties of the resulting SACs were studied. The SACs were characterized by N2 adsorption, X-ray diffraction, scanning electron microscopy, and aqueous adsorption assays. Either increasing activation temperature or extending retention time decreases the yield of SACs. The BET surface area and pore volume increase with activation temperature and reach a maximum at 1000°C and then decrease at higher activation temperatures. At 1000°C, BET surface area, total pore volume, and mesopore pore volume increase with retention time from 0.5 to 2 h, and meanwhile micropore volume decreases. The micropores are gradually widened into mesopores with increasing activation temperature or extending retention time. SEM and XRD analyses of SAC10 verify the presence of developed porous structure composed of disordered micrographite stacking. Aqueous adsorption assays indicate that SACs have good adsorption capacity for phenol. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
| Databáze: | OpenAIRE |
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