Nickel nanoparticles decorated on electrospun polycaprolactone/chitosan nanofibers as flexible, highly active and reusable nanocatalyst in the reduction of nitrophenols under mild conditions

buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage562en_US
dc.citation.spage549en_US
dc.citation.volumeNumber203en_US
dc.contributor.authorKarakas, K.en_US
dc.contributor.authorCelebioglu A.en_US
dc.contributor.authorCelebi, M.en_US
dc.contributor.authorUyar, Tameren_US
dc.contributor.authorZahmakiran, M.en_US
dc.date.accessioned2018-04-12T11:13:28Z
dc.date.available2018-04-12T11:13:28Z
dc.date.issued2017-04en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractToday, the reduction of nitro aromatics stands a major challenge because of the pollutant and detrimental nature of these compounds. In the present study, we show that nickel(0) nanoparticles (Ni-NP) decorated on electrospun polymeric (polycaprolactone(PCL)/chitosan) nanofibers (Ni-NP/ENF) effectively catalyze the reduction of various nitrophenols (2-nitrophenol, 2,4-dinitrophenol, 2,4,6-trinitrophenol) under mild conditions. Ni-NP/ENF nanocatalyst was reproducibly prepared by deposition-reduction technique. The detailed characterization of these Ni-NP/ENF based nanocatalyst have been performed by using various spectroscopic tools including ICP-OES, P-XRD, XPS, SEM, BFTEM, HRTEM and BFTEM-EDX techniques. The results revealed the formation of well-dispersed nickel(0) NP (dmean = 2.71–2.93 nm) on the surface of electrospun polymeric nanofibers. The catalytic activity of the resulting Ni-NP/ENF was evaluated in the catalytic reduction of nitrophenols in aqueous solution in the presence of sodium borohydride (NaBH4) as reducing agent, in which Ni-NP/ENF nanocatalyst has shown high activity (TOF = 46.2 mol 2-nitrophenol/mol Ni min; 48.2 mol 2,4-dinitrophenol/mol Ni min; 65.6 mol 2,4,6-trinitrophenol/mol Ni min). More importantly, due to the nanofibrous polymeric support, Ni-NP/ENF has shown a flexible characteristics along with reusability property. Testing the catalytic stability of Ni-NP/ENF revealed that this new catalytic material provides high reusability performance (at 3rd reuse 86% for 2-nitrophenol, 83% 2,4-dinitrophenol and 82% 2,4,6-trinitrophenol) for the reduction of nitrophenols even at room temperature and under air. The present study reported here also includes the compilation of wealthy kinetic data for Ni-NP/ENF catalyzed the reduction of nitrophenols in aqueous sodium borohydride solution depending on temperature and type of support material (Al2O3, C, SiO2) to understand the effect of the support material and determine the activation parameters.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:13:28Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2017en
dc.embargo.release2019-04-01en_US
dc.identifier.doi10.1016/j.apcatb.2016.10.020en_US
dc.identifier.issn0926-3373
dc.identifier.urihttp://hdl.handle.net/11693/37438
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.apcatb.2016.10.020en_US
dc.source.titleApplied Catalysis B: Environmentalen_US
dc.subjectElectrospinningen_US
dc.subjectNanocatalysten_US
dc.subjectNanofibersen_US
dc.subjectNickelen_US
dc.subjectNitrophenolsen_US
dc.subjectReductionen_US
dc.subjectC (programming language)en_US
dc.subjectCatalyst activityen_US
dc.subjectCharacterizationen_US
dc.subjectChemical sensorsen_US
dc.subjectElectrospinningen_US
dc.subjectNanofibersen_US
dc.subjectNanoparticlesen_US
dc.subjectPhenolsen_US
dc.subjectPolycaprolactoneen_US
dc.subjectPolymersen_US
dc.subjectReductionen_US
dc.subjectReusabilityen_US
dc.subjectSodiumen_US
dc.subjectSolutionsen_US
dc.subjectActivation parameteren_US
dc.subjectEffect of the supporten_US
dc.subjectFlexible characteristicsen_US
dc.subjectNano-catalysten_US
dc.subjectNickel nanoparticlesen_US
dc.subjectNitrophenolsen_US
dc.subjectPolymeric nanofibersen_US
dc.subjectReduction techniquesen_US
dc.subjectNickelen_US
dc.titleNickel nanoparticles decorated on electrospun polycaprolactone/chitosan nanofibers as flexible, highly active and reusable nanocatalyst in the reduction of nitrophenols under mild conditionsen_US
dc.typeArticleen_US

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