Thiol-Functionalized Mesoporous Carbons as Adsorbents of Heavy-Metal Ions
Ordered mesoporous carbon has been obtained by hard templating using SBA-15 and subsequently, oxidized (by treatment with ammonium persulphate) and thiol-functionalized (by treatment with thiol-contained polyhedral oligomeric silsesquioxane). Pristine and thiol-functionalized carbons were characteri...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2015-08-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.33.6-8.663 |
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| Summary: | Ordered mesoporous carbon has been obtained by hard templating using SBA-15 and subsequently, oxidized (by treatment with ammonium persulphate) and thiol-functionalized (by treatment with thiol-contained polyhedral oligomeric silsesquioxane). Pristine and thiol-functionalized carbons were characterized by nitrogen adsorption, X-ray diffractometry, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy and tested for their ability to adsorb bivalent heavy-metal ions (Cd, Cu, Pb, Zn) from the aqueous solutions. The observed static adsorption capacities are very high up to 0.76 mmol/g. Adsorption kinetics is also very fast: approximately 90% of the equilibrium amount is adsorbed after several minutes. |
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| ISSN: | 0263-6174 2048-4038 |