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Removal of 2-nitrophenol by catalytic wet peroxide oxidation using carbon materials with different morphological and chemical properties

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dc.contributor.authorRibeiro, Rui
dc.contributor.authorSilva, Adrián
dc.contributor.authorFigueiredo, José
dc.contributor.authorFaria, Joaquim
dc.contributor.authorGomes, Helder
dc.date.accessioned2013-09-16T09:08:41Z
dc.date.available2013-09-16T09:08:41Z
dc.date.issued2013
dc.description.abstractCarbon materials with distinct morphological and chemical characteristics, namely activated carbons,carbon nanotubes, glycerol-based carbon materials and carbon xerogels, were tested for the removal of 2-nitrophenol (2-NP) in aqueous solutions, either by pure adsorption or by catalytic wet peroxideoxidation (CWPO). The results obtained in adsorption experiments carried out at pH 3, T = 323 K, adsorbent load of 0.1 g L−1and 2-NP concentration of 100 mg L−1, show that, in general, the activated carbons have superior adsorption performances compared to the other carbon materials tested, exhibiting removals of 2-NP up to316 mg g−1after 150 min of adsorption.In the CWPO experiments, whilst the activated carbons and carbon xerogels were not able to improvethe removal of 2-nitrophenol, in comparison with the removals observed in pure adsorption experimentsperformed at the same conditions, the use of carbon nanotubes (CNT) and a glycerol-based carbon mate-rial (GBCM) resulted in increments in the removal of 2-NP as high as 83% and 56%, respectively. Removals of about 80% after only 30 min and higher than 90% after 150 min of reaction (equivalent to 929 mg g−1) are reached when using CNT as catalysts. The leaching of Fe (present as impurity in the CNT) at the end ofthe CWPO experiment was found to be negligible. The opposite was observed for classical iron supportedon activated carbons, with catalytic activities resulting from the homogeneous contribution of Fe that is leached to the liquid phase. The superior performances found for CNT, makes this catalyst a promisingsystem for CWPO.por
dc.identifier.citationRibeiro R.S.; Silva A.M.T.; Figueiredo J.L.; Faria J.L.; Gomes H.T. (2013). Removal of 2-nitrophenol by catalytic wet peroxide oxidation using carbon materials with different morphological and chemical properties. Applied Catalysis B: Environmental. ISSN 0926-3373. 140-141, p. 356-362por
dc.identifier.doi10.1016/j.apcatb.2013.04.031
dc.identifier.urihttp://hdl.handle.net/10198/8755
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectCarbon nanotubespor
dc.subjectGlycerol-based carbon materialspor
dc.subjectIron leachingpor
dc.subjectCatalytic wet peroxide oxidation (CWPO)por
dc.subject2-Nitrophenolpor
dc.titleRemoval of 2-nitrophenol by catalytic wet peroxide oxidation using carbon materials with different morphological and chemical propertiespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage362por
oaire.citation.startPage356por
oaire.citation.titleApplied Catalysis B: Environmentalpor
oaire.citation.volume140-141por
person.familyNameGomes
person.givenNameHelder
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-6898-2408
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery0eb96337-224a-4339-9918-334436fbbb99

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