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Application-Specific Catalyst Layers

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Laurila, Tomi
dc.contributor.author Sainio, Sami
dc.contributor.author Jiang, Hua
dc.contributor.author Isoaho, Noora
dc.contributor.author Koehne, Jessica
dc.contributor.author Etula, Jarkko
dc.contributor.author Koskinen, Jari
dc.contributor.author Meyyappan, M.
dc.date.accessioned 2017-03-23T12:48:24Z
dc.date.available 2017-03-23T12:48:24Z
dc.date.issued 2017-02-13
dc.identifier.citation Laurila , T , Sainio , S , Jiang , H , Isoaho , N , Koehne , J , Etula , J , Koskinen , J & Meyyappan , M 2017 , ' Application-Specific Catalyst Layers : Pt-Containing Carbon Nanofibers for Hydrogen Peroxide Detection ' , ACS Omega , vol. 2 , no. 2 , pp. 496-507 . https://doi.org/10.1021/acsomega.6b00441 en
dc.identifier.issn 2470-1343
dc.identifier.other PURE UUID: c11fbb51-4ddb-4f94-b670-41e618b11010
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/c11fbb51-4ddb-4f94-b670-41e618b11010
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/11520101/acsomega.6b00441.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/24938
dc.description.abstract Complete removal of metal catalyst particles from carbon nanofibers (CNFs) and other carbon nanostructures is extremely difficult, and the envisioned applications may be compromised by the left-over impurities. To circumvent these problems, one should use, wherever possible, such catalyst materials that are meant to remain in the structure and have some application-specific role, making any removal steps unnecessary. Thus, as a proof-of-concept, we present here a nanocarbon-based material platform for electrochemical hydrogen peroxide measurement utilizing a Pt catalyst layer to grow CNFs with intact Pt particles at the tips of the CNFs. Backed by careful scanning transmission electron microscopy analysis, we show that this material can be readily realized with the Pt catalyst layer thickness impacting the resulting structure and also present a growth model to explain the evolution of the different types of structures. In addition, we show by electrochemical analysis that the material exhibits characteristic features of Pt in cyclic voltammetry and it can detect very small amounts of hydrogen peroxide with very fast response times. Thus, the present sensor platform provides an interesting electrode material with potential for biomolecule detection and in fuel cells and batteries. In the wider range, we propose a new approach where the selection of catalytic particles used for carbon nanostructure growth is made so that (i) they do not need to be removed and (ii) they will have essential role in the final application. en
dc.format.extent 496-507
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries ACS Omega en
dc.relation.ispartofseries Volume 2 en
dc.rights openAccess en
dc.title Application-Specific Catalyst Layers en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Electrical Engineering and Automation
dc.contributor.department Department of Applied Physics
dc.contributor.department NASA Ames Research Center
dc.contributor.department Department of Chemistry and Materials Science
dc.identifier.urn URN:NBN:fi:aalto-201703233181
dc.identifier.doi 10.1021/acsomega.6b00441

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