Structure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removal

2.50
Hdl Handle:
http://hdl.handle.net/2436/620466
Title:
Structure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removal
Authors:
Chmielewská, E.; Tylus, W.; Drábik, M.; Majzlan, J.; Kravčak, J.; Williams, Craig; Čaplovičová, M.; Čaplovič, Ľ. ( 0000-0002-2280-008X )
Abstract:
Biomimetic 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).
Citation:
Structure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removal 2017, 248:222 Microporous and Mesoporous Materials
Publisher:
Elsevier
Journal:
Microporous and Mesoporous Materials
Issue Date:
Aug-2017
URI:
http://hdl.handle.net/2436/620466
DOI:
10.1016/j.micromeso.2017.04.022
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S1387181117302627
Type:
Article
Language:
en
ISSN:
1387-1811
Appears in Collections:
FSE

Full metadata record

DC FieldValue Language
dc.contributor.authorChmielewská, E.en
dc.contributor.authorTylus, W.en
dc.contributor.authorDrábik, M.en
dc.contributor.authorMajzlan, J.en
dc.contributor.authorKravčak, J.en
dc.contributor.authorWilliams, Craigen
dc.contributor.authorČaplovičová, M.en
dc.contributor.authorČaplovič, Ľ.en
dc.date.accessioned2017-05-09T15:33:33Z-
dc.date.available2017-05-09T15:33:33Z-
dc.date.issued2017-08-
dc.identifier.citationStructure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removal 2017, 248:222 Microporous and Mesoporous Materialsen
dc.identifier.issn1387-1811en
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).en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S1387181117302627en
dc.rightsArchived with thanks to Microporous and Mesoporous Materialsen
dc.titleStructure investigation of nano-FeO(OH) modified clinoptilolite tuff for antimony removalen
dc.typeArticleen
dc.identifier.journalMicroporous and Mesoporous Materialsen
dc.date.accepted2017-04-12-
rioxxterms.funderinternalen
rioxxterms.identifier.projectUOW090517CWen
rioxxterms.versionAMen
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
rioxxterms.licenseref.startdate2018-04-14en
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