A soft hydrogel reactor for cobalt nanoparticle preparation and use in the reduction of nitrophenols

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dc.authoridŞahiner, Nurettin/0000-0003-0120-530X
dc.authoridAktas, Nahit/0000-0001-9341-607X
dc.authoridOzay, Hava/0000-0002-4184-7801
dc.contributor.authorŞahiner, Nurettin
dc.contributor.authorOzay, Hava
dc.contributor.authorÖzay, Özgür
dc.contributor.authorAktas, 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.abstractBulk poly(2-acrylamido-2-methyl-1-propansulfonic acid) (p(AMPS)) hydrogels were prepared by irradiation of an aqueous solution of AMPS in the presence of crosslinker and photoinitiator. These p(AMPS) hydrogel networks were utilized for in situ cobalt nanoparticle synthesis by reduction of metal ions absorbed into the hydrogel network with a reducing agent, i.e., NaBH(4). TEM images confirmed that Co particles are about 100 nm in size. The hydrogel network with embedded Co nanoparticles was utilized as a catalyst in the reduction of 4-nitrophenol (4-NP) and 2-nitrophenol (2-NP) in aqueous media in the presence of an excess amount of NaBH4. The kinetics of the reduction reaction under different reaction conditions was investigated to determine the activation parameters. Activation energies are 27.8 kJ mol(-1) and 39.3 kJ mol(-1) for 4-NP and 2-NP, respectively. It was found that hydrogel-Co composites were 99% active after 5 days storage. (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 (Grant No.: 108T122). Also, N. Sahiner greatly acknowledges the Turkish Academy of Science for financial support under the TUBA-GEGIP 2008 program.
dc.identifier.doi10.1016/j.apcatb.2010.09.022
dc.identifier.endpage143
dc.identifier.issn0926-3373
dc.identifier.issue1-2
dc.identifier.scopus2-s2.0-78049436682
dc.identifier.scopusqualityQ1
dc.identifier.startpage137
dc.identifier.urihttps://doi.org/10.1016/j.apcatb.2010.09.022
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21113
dc.identifier.volume101
dc.identifier.wosWOS:000284976800017
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofApplied Catalysis B-Environmental
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectHydrogel-templates
dc.subjectFlexible hydrogel-reactor
dc.subjectIn situ nanoparticle formation
dc.subjectHydrogel-reaction vessel
dc.subjectHydrogel-nanocomposites
dc.subjectCo nanoparticles
dc.titleA soft hydrogel reactor for cobalt nanoparticle preparation and use in the reduction of nitrophenols
dc.typeArticle

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