New catalytic route: Hydrogels as templates and reactors for in situ Ni nanoparticle synthesis and usage in the reduction of 2-and 4-nitrophenols

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dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.authoridAktaş, Nahit / 0000-0001-9341-607X
dc.authoridÖzay, Hava / 0000-0002-4184-7801
dc.contributor.authorŞahiner, Nurettin
dc.contributor.authorÖzay, Hava
dc.contributor.authorÖzay, Özgür
dc.contributor.authorAktaş, Nahit
dc.date.accessioned2025-01-27T20:14:30Z
dc.date.available2025-01-27T20:14:30Z
dc.date.issued2010
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractNickel nanoparticles inside poly(2-acrylamido-2-methyl-1-propansulfonic acid) (p(AMPS)) hydrogel were prepared by reduction of Ni(II) ions absorbed within hydrogel network. TEM images confirmed that in situ formed nickel particle in p(AMPS) hydrogel networks are about 100 nm. These nickel metal nanoparticles containing hydrogel-composites were utilized as catalysts and reaction media for the reduction reactions of aromatic nitro compounds, 2- and 4-nitrophenols with aqueous NaBH(4). The reduction rate constants at four different temperatures (30, 40,50 and 60 degrees C) and activation parameters were calculated. The activation energies (E(a)) for 4- and 2-nitrophenols are 25.70 and 38.69 kJ mol(-1), respectively. It was found that these types of hydrogel-composite catalyst systems can be used repetitively up to five times with 100% conversion and only with 25% reduction in the initial reduction rate. (c) 2010 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [108T122]; Turkish Academy of Science
dc.description.sponsorshipThis work is supported by the Scientific and Technological Research Council of Turkey (108T122). And the support from Turkish Academy of Science under 2008 TUBA-GEBIP program is greatly acknowledged.
dc.identifier.doi10.1016/j.apcata.2010.07.004
dc.identifier.endpage207
dc.identifier.issn0926-860X
dc.identifier.issue1-2
dc.identifier.scopus2-s2.0-78049316242
dc.identifier.scopusqualityQ1
dc.identifier.startpage201
dc.identifier.urihttps://doi.org/10.1016/j.apcata.2010.07.004
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21114
dc.identifier.volume385
dc.identifier.wosWOS:000281991000023
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofApplied Catalysis A-General
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectHydrogel reactor
dc.subjectNanocomposites
dc.subjectNi catalyst
dc.subjectNanoparticles
dc.subjectHydrogel-template
dc.titleNew catalytic route: Hydrogels as templates and reactors for in situ Ni nanoparticle synthesis and usage in the reduction of 2-and 4-nitrophenols
dc.typeArticle

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