Publication:
Preparation of carbon black supported Pd, Pt and Pd–Pt nanoparticles using supercritical CO2 deposition

dc.contributor.coauthorZhang, L. C.
dc.contributor.coauthorAindow, M.
dc.contributor.departmentDepartment of Chemical and Biological Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorCangül, Betül
dc.contributor.kuauthorErkey, Can
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T23:04:22Z
dc.date.issued2009
dc.description.abstractThe preparation of carbon black (Black Pearl 2000) supported single Pd, Pt and bimetallic Pd-Pt nanoparticles utilizing the supercritical CO2 deposition method was investigated. Palladium (11) acetylacetonate (Pd(acac)2) and dimethyl (cyclooctadiene) platinum (H) (Pt(cod)me(2)) were utilized as metallic precursors. The adsorption isotherms of Pd(acac)(2) and Pt(cod)me(2) on BP2000 in scCO(2) at 20 MPa and 60 degrees C were determined. A mass transfer model was found to represent the experimental data on the kinetics of adsorption of Pd(acac)(2) onto BP2000 in scCO(2) fairly well with a fitting error of 5.6%. In order to prepare the supported nanoparticles, chemical reduction with H-2 in scCO(2) was utilized. Increasing reduction temperature and metal loading caused an increase in Pd particle size. The I'd particles were irregularly distributed and the size range of the particles was 3-100 nm, whereas Pt nanoparticles were homogeneously distributed with a size range of 2-6 nm. Binary metal nanoparticles could also be produced by simultaneous adsorption and subsequent reduction of the precursors. It was found that addition of Pt increased the homogeneity and reduced the particle size on the support compared to single Pd nanoparticles. From the X-ray spectrometry data, it was seen that there was a heterogeneous mixture of the bimetallic nanoparticles. Pt-rich nanoparticles had diameters of around 4 nm, whereas Pd-rich nanoparticles were larger with diameters of around 10 nm. (C) 2009 Elsevier B.V. All rights reserved.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue1
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume50
dc.identifier.doi10.1016/j.supflu.2009.04.001
dc.identifier.eissn1872-8162
dc.identifier.issn0896-8446
dc.identifier.scopus2-s2.0-66849131741
dc.identifier.urihttps://doi.org/10.1016/j.supflu.2009.04.001
dc.identifier.urihttps://hdl.handle.net/20.500.14288/8627
dc.identifier.wos274354700013
dc.keywordsSupercritical deposition
dc.keywordsCarbon
dc.keywordsNanoparticles
dc.keywordsPlatinum
dc.keywordsPalladium platinum nanoparticles
dc.keywordsOxygen reduction
dc.keywordsAerogel nanocomposites
dc.keywordsElectrocatalysts
dc.keywordsCatalyst
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofJournal of Supercritical Fluids
dc.subjectChemistry
dc.subjectPhysical
dc.subjectEngineering
dc.subjectChemical engineering
dc.titlePreparation of carbon black supported Pd, Pt and Pd–Pt nanoparticles using supercritical CO2 deposition
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorCangül, Betül
local.contributor.kuauthorErkey, Can
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Chemical and Biological Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
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