dc.contributor.author | Liatsou, Ioanna | en |
dc.contributor.author | Pashalidis, Ioannis | en |
dc.contributor.author | Oezaslan, M. | en |
dc.contributor.author | Dosche, C. | en |
dc.creator | Liatsou, Ioanna | en |
dc.creator | Pashalidis, Ioannis | en |
dc.creator | Oezaslan, M. | en |
dc.creator | Dosche, C. | en |
dc.date.accessioned | 2019-11-21T06:21:12Z | |
dc.date.available | 2019-11-21T06:21:12Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 2213-3437 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/55796 | |
dc.description.abstract | In the last years, biochar fibers derived from Luffa Cylindrica have emerged as promising adsorbent material for harmful heavy metal ions. Based on their unique vascular structure, they exhibit a large surface area and thus high capability for the adsorption of metal ions. We investigated the structure and chemical surface composition of the carbonized fibers after treatment with 8 M HNO3 prior and after Sm3+ binding in aqueous solutions. We used a large combination of classical analytical methods such as acid-base titration and batch-type adsorption experiments, as well as high-resolution microscopic and spectroscopic techniques like FTIR, XPS/REELS and SEM-EDX. The goal of the chemical oxidation is to functionalize the inner and outer surfaces of the biochar fibers by forming oxygen-containing active surface groups. Titration and spectroscopic data clearly reveal that anhydrides and carboxylic acids are acting as main surface groups to bind metal ions like Sm3+. We will show that the combination of high surface area and high density of carboxylic acid groups results in extremely high capacity of 2.4 mol kg-1 for the adsorption of Sm3+ ions. Therefore, the functionalization of biochar fibers offers a great potential to design advanced adsorbent materials for polluting heavy metal ions. © 2017 Elsevier Ltd. All rights reserved. | en |
dc.source | Journal of Environmental Chemical Engineering | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026914992&doi=10.1016%2fj.jece.2017.07.040&partnerID=40&md5=32c339fd4256b5a2c5ed566bf6339759 | |
dc.subject | Surface oxidation | en |
dc.subject | FTIR- and XPS- spectroscopy | en |
dc.subject | Oxidized biochar fibers | en |
dc.subject | SEM-EDX analysis | en |
dc.subject | Sm3+adsorption | en |
dc.subject | Surface species | en |
dc.title | Surface characterization of oxidized biochar fibers derived from Luffa Cylindrica and lanthanide binding | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1016/j.jece.2017.07.040 | |
dc.description.volume | 5 | |
dc.description.issue | 4 | |
dc.description.startingpage | 4069 | |
dc.description.endingpage | 4074 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Χημείας / Department of Chemistry | |
dc.type.uhtype | Article | en |
dc.source.abbreviation | J.Environ.Chem.Eng. | en |
dc.contributor.orcid | Pashalidis, Ioannis [0000-0002-7587-6395] | |
dc.gnosis.orcid | 0000-0002-7587-6395 | |