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The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles

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dc.contributor.author Mathe, Ntombizodwa R
dc.contributor.author Nkosi, SS
dc.contributor.author Motaung, DE
dc.contributor.author Scriba, Manfred R
dc.contributor.author Coville, NJ
dc.date.accessioned 2015-08-17T13:30:49Z
dc.date.available 2015-08-17T13:30:49Z
dc.date.issued 2015-05
dc.identifier.citation Mathe, NR, Nkosi, S.S, Motaung, D.E, Scriba, M.R and Coville, N.J. 2015. The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles. Electrocatalysis, vol. 6(3), pp 274-285 en_US
dc.identifier.issn 1868-2529
dc.identifier.uri http://link.springer.com/article/10.1007%2Fs12678-014-0241-y
dc.identifier.uri http://hdl.handle.net/10204/8015
dc.description Copyright: 2015 Springer. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Electrocatalysis, vol. 6(3), pp 274-285 en_US
dc.description.abstract The electronic, magnetic and electrocatalytic properties of bimetallic thiol-capped Pt/Co and Pt/Ni nanoparticles were synthesised using two reducing agents, NaBH(sub4) and N(sub2)H(sub4). X-ray diffraction analysis of the nanoparticles showed Pt lattice contraction upon the addition of Co or Ni to Pt indicating the formation of an alloy structure, more apparent when N(sub2)H(sub4) was used. XPS data analysis revealed Pt metal and Pt(II) (assigned to PtO) and a higher concentration of surface metallic Ni and Co for the NaBH(sub4-)reduced samples. Both the NaBH(sub4-) and N2H(sub4-)reduced catalysts were active for the methanol oxidation reaction (MOR), with the Pt-Co-N(sub2)H(sub4) catalyst revealing the highest activity. The N(sub2(H(sub4) significantly affected the magnetic properties of Pt/Co and Pt/Ni particles by controlling the morphology and crystalline structure of the nanoparticles. In general, the type of reducing agent affected the final properties of the nanoparticles. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.relation.ispartofseries Workflow;15028
dc.subject Nanoparticles en_US
dc.subject Physical chemistry en_US
dc.subject Electrochemistry en_US
dc.title The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles en_US
dc.type Article en_US
dc.identifier.apacitation Mathe, N. R., Nkosi, S., Motaung, D., Scriba, M. R., & Coville, N. (2015). The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles. http://hdl.handle.net/10204/8015 en_ZA
dc.identifier.chicagocitation Mathe, Ntombizodwa R, SS Nkosi, DE Motaung, Manfred R Scriba, and NJ Coville "The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles." (2015) http://hdl.handle.net/10204/8015 en_ZA
dc.identifier.vancouvercitation Mathe NR, Nkosi S, Motaung D, Scriba MR, Coville N. The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles. 2015; http://hdl.handle.net/10204/8015. en_ZA
dc.identifier.ris TY - Article AU - Mathe, Ntombizodwa R AU - Nkosi, SS AU - Motaung, DE AU - Scriba, Manfred R AU - Coville, NJ AB - The electronic, magnetic and electrocatalytic properties of bimetallic thiol-capped Pt/Co and Pt/Ni nanoparticles were synthesised using two reducing agents, NaBH(sub4) and N(sub2)H(sub4). X-ray diffraction analysis of the nanoparticles showed Pt lattice contraction upon the addition of Co or Ni to Pt indicating the formation of an alloy structure, more apparent when N(sub2)H(sub4) was used. XPS data analysis revealed Pt metal and Pt(II) (assigned to PtO) and a higher concentration of surface metallic Ni and Co for the NaBH(sub4-)reduced samples. Both the NaBH(sub4-) and N2H(sub4-)reduced catalysts were active for the methanol oxidation reaction (MOR), with the Pt-Co-N(sub2)H(sub4) catalyst revealing the highest activity. The N(sub2(H(sub4) significantly affected the magnetic properties of Pt/Co and Pt/Ni particles by controlling the morphology and crystalline structure of the nanoparticles. In general, the type of reducing agent affected the final properties of the nanoparticles. DA - 2015-05 DB - ResearchSpace DP - CSIR KW - Nanoparticles KW - Physical chemistry KW - Electrochemistry LK - https://researchspace.csir.co.za PY - 2015 SM - 1868-2529 T1 - The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles TI - The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles UR - http://hdl.handle.net/10204/8015 ER - en_ZA


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