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dc.contributor.authorChmielewská, E.
dc.contributor.authorTylus, W.
dc.contributor.authorDrábik, M.
dc.contributor.authorMajzlan, J.
dc.contributor.authorKravčak, J.
dc.contributor.authorWilliams, Craig
dc.contributor.authorČaplovičová, M.
dc.contributor.authorČaplovič, Ľ.
dc.date.accessioned2017-05-09T15:33:33Z
dc.date.available2017-05-09T15:33:33Z
dc.date.issued2017-04-14
dc.identifier.citation(2017) 'Structure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removal', Microporous and Mesoporous Materials, 248 pp. 222-233
dc.identifier.issn1387-1811
dc.identifier.doi10.1016/j.micromeso.2017.04.022
dc.identifier.urihttp://hdl.handle.net/2436/620466
dc.description.abstractBiomimetic sol-gel synthesis was used to prepare new FeO(OH) zeolite (clinoptilolite tuff) adsorbent effective for antimony removal. The product was compared with other on the market accessible natural or commercial adsorption materials like granulated ferric hydroxide GEH, powder of zero valent iron (ZVI)- nanofer and the new synthesized oxi(hydr)oxide FeO(OH) and characterized by XRD, XPS, Raman, FT IR, TG, DTA, DTG, TEM and SEM techniques. Based upon the SEM analysis, the oxidized nanofer sample revealed the existence of hematite and goethite and morphology of FeO(OH) dopant confirmed the presence of ferrihydrite, in less extent also magnetite and hematite. Recorded exothermic maxima on DTA curves for powdered FeO(OH) zeolite at 460 °C and for pure component FeO(OH) at 560 °C indicated an 100 °C shifted exothermic effect, which characterized strong chemical interaction of FeO(OH) with zeolite structure. Based upon the XPS analyses, also the difference between Fe species in the raw and FeO(OH) doped zeolite was found in increasing Si/Al ratio, however only at the surface below app. 5 nm, measured as 3.94 for raw and 5.38 for sample treated with alkalic solution. The plotting of adsorption isotherms in the system studied clearly showed the increasing uptake capacity of the adsorbents towards antimony with the increased S(BET) data (GEH ˃FeO(OH)˃FeO(OH) zeolite˃nanofer).
dc.language.isoen
dc.publisherElsevier
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S1387181117302627
dc.titleStructure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removal
dc.typeJournal article
dc.identifier.journalMicroporous and Mesoporous Materials
dc.date.accepted2017-04-12
rioxxterms.funderUniversity of Wolverhampton
rioxxterms.identifier.projectUOW090517CW
rioxxterms.versionAM
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
rioxxterms.licenseref.startdate2018-04-14
dc.source.volume248
dc.source.beginpage222
dc.source.endpage233
refterms.dateFCD2018-10-19T09:26:31Z
refterms.versionFCDAM
refterms.dateFOA2018-04-14T00:00:00Z
html.description.abstractBiomimetic sol-gel synthesis was used to prepare new FeO(OH) zeolite (clinoptilolite tuff) adsorbent effective for antimony removal. The product was compared with other on the market accessible natural or commercial adsorption materials like granulated ferric hydroxide GEH, powder of zero valent iron (ZVI)- nanofer and the new synthesized oxi(hydr)oxide FeO(OH) and characterized by XRD, XPS, Raman, FT IR, TG, DTA, DTG, TEM and SEM techniques. Based upon the SEM analysis, the oxidized nanofer sample revealed the existence of hematite and goethite and morphology of FeO(OH) dopant confirmed the presence of ferrihydrite, in less extent also magnetite and hematite. Recorded exothermic maxima on DTA curves for powdered FeO(OH) zeolite at 460 °C and for pure component FeO(OH) at 560 °C indicated an 100 °C shifted exothermic effect, which characterized strong chemical interaction of FeO(OH) with zeolite structure. Based upon the XPS analyses, also the difference between Fe species in the raw and FeO(OH) doped zeolite was found in increasing Si/Al ratio, however only at the surface below app. 5 nm, measured as 3.94 for raw and 5.38 for sample treated with alkalic solution. The plotting of adsorption isotherms in the system studied clearly showed the increasing uptake capacity of the adsorbents towards antimony with the increased S(BET) data (GEH ˃FeO(OH)˃FeO(OH) zeolite˃nanofer).


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