SO2 gas adsorption on carbon nanomaterials: a comparative study
| Autor: | Jörg J. Schneider, Manfred J. Hampe, Deepu J. Babu, Sherif Okeil, Divya Puthusseri, Michael Bruns, Frank Kühl |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Technology
Materials science Oxide General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Carbon nanotube lcsh:Chemical technology 010402 general chemistry lcsh:Technology 01 natural sciences Full Research Paper law.invention chemistry.chemical_compound Adsorption Physisorption law medicine Nanotechnology sulfur dioxide vertically aligned carbon nanotubes lcsh:TP1-1185 General Materials Science Electrical and Electronic Engineering lcsh:Science heat of adsorption carbon nanotubes lcsh:T Graphene 021001 nanoscience & nanotechnology lcsh:QC1-999 0104 chemical sciences Nanoscience chemistry Chemical engineering Chemisorption adsorption carbon nanohorns lcsh:Q 0210 nano-technology ddc:600 Carbon lcsh:Physics Activated carbon medicine.drug |
| Zdroj: | Beilstein Journal of Nanotechnology Beilstein journal of nanotechnology, 9 (1), 1782-1792 Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 1782-1792 (2018) |
| ISSN: | 2190-4286 |
| Popis: | Owing to their high stability against corrosive gases, carbon-based adsorbents are preferentially used for the adsorptive removal of SO2. In the present study, SO2 adsorption on different carbon nanomaterials namely carbon nanohorns (CNHs), multiwalled carbon nanotubes (MWNTs), single-walled carbon nanotubes (SWNTs) and vertically aligned carbon nanotubes (VACNTs) are investigated and compared against the adsorption characteristics of activated carbon and graphene oxide (GO). A comprehensive overview of the adsorption behavior of this family of carbon adsorbents is given for the first time. The relative influence of surface area and functional groups on the SO2 adsorption characteristics is discussed. The isosteric heat of adsorption values are calculated to quantify the nature of the interaction between the SO2 molecule and the adsorbent. Most importantly, while chemisorption is found to dominate the adsorption behavior in activated carbon, SO2 adsorption on carbon nanomaterials occurs by a physisorption mechanism. |
| Databáze: | OpenAIRE |
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