Atomic layer deposition of Pd nanoparticles on N-Doped electrospun carbon nanofibers: optimization of ORR activity of Pd-Based nanocatalysts by tuning their nanoparticle size and loading

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buir.contributor.authorKhalily, Mohammad Aref
buir.contributor.authorPatil, Bhushan
buir.contributor.authorYılmaz, Eda
buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage1546en_US
dc.citation.issueNumber12en_US
dc.citation.spage1540en_US
dc.citation.volumeNumber5en_US
dc.contributor.authorKhalily, Mohammad Arefen_US
dc.contributor.authorPatil, Bhushanen_US
dc.contributor.authorYılmaz, Edaen_US
dc.contributor.authorUyar, Tameren_US
dc.date.accessioned2020-02-10T10:41:14Z
dc.date.available2020-02-10T10:41:14Z
dc.date.issued2019
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractOptimization of size, loading and chemical composition of catalytic nanoparticles is a crucial step to achieve cost‐effective and efficient (electro) catalysts. This report elaborates optimization of palladium (Pd) nanoparticle size and loading on the electrospun based N‐doped carbon nanofibers (nCNF) towards oxygen reduction reaction (ORR) for the energy devices like fuel cell, metal air batteries. Electrospinning was utilized to produce one‐dimensional (1D) polyacrylonitrile nanofibers followed by a two‐step carbonization process obtaining well‐defined conductive nCNF having diameters in the range of 200–350 nm. As‐synthesized nCNF was decorated with discrete Pd nanoparticles ranging from 2.6±0.4 nm to 4.7±0.5 nm via thermal atomic layer deposition (ALD) technique. We found that nCNF deposited Pd nanoparticles having 3.9±0.6 nm size (Pd20/nCNF) showed the best ORR activity with the smallest Tafel slope of 58 mV dec−1 along with four electrons involved in the ORR. In addition, high value at half wave potential (E1/2=806 mV vs. RHE) and exchange current densities (i0=6.998 mA cm−2) at Pd20/nCNF makes it efficient catalyst among other Pd decorated nCNF. Moreover, we found that electrocatalyst with lower loading/density of Pd nanoparticles showed enhanced ORR activity.en_US
dc.embargo.release2020-12-04
dc.identifier.doi10.1002/cnma.201900483en_US
dc.identifier.issn2199-692X
dc.identifier.urihttp://hdl.handle.net/11693/53221
dc.language.isoEnglishen_US
dc.publisherWiley-VCHVerlagGmbH& Co. KGaA,Weinheimen_US
dc.relation.isversionofhttps://doi.org/10.1002/cnma.201900483en_US
dc.source.titleChemNanoMaten_US
dc.subjectNanocatalysisen_US
dc.subjectAtomic layer depositionen_US
dc.subjectElectrospiningen_US
dc.subjectElectrocatalysisen_US
dc.subjectOxygen reduction reactionen_US
dc.titleAtomic layer deposition of Pd nanoparticles on N-Doped electrospun carbon nanofibers: optimization of ORR activity of Pd-Based nanocatalysts by tuning their nanoparticle size and loadingen_US
dc.typeArticleen_US

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