Pt-grown carbon nanofibers for detection of hydrogen peroxide

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Isoaho, Noora Sainio, Sami Wester, Niklas Botello, Luis Johansson, Leena Sisko Peltola, Emilia Climent, Victor Feliu, Juan M. Koskinen, Jari Laurila, Tomi 2018-05-22T14:44:52Z 2018-05-22T14:44:52Z 2018
dc.identifier.citation Isoaho , N , Sainio , S , Wester , N , Botello , L , Johansson , L S , Peltola , E , Climent , V , Feliu , J M , Koskinen , J & Laurila , T 2018 , ' Pt-grown carbon nanofibers for detection of hydrogen peroxide ' RSC Advances , vol 8 , no. 23 , pp. 12742-12751 . DOI: 10.1039/c8ra01703d en
dc.identifier.issn 2046-2069
dc.identifier.other PURE UUID: a879795b-0320-4b06-8b10-3e9fcc320e2a
dc.identifier.other PURE ITEMURL:
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dc.description.abstract Removal of left-over catalyst particles from carbon nanomaterials is a significant scientific and technological problem. Here, we present the physical and electrochemical study of application-specific carbon nanofibers grown from Pt-catalyst layers. The use of Pt catalyst removes the requirement for any cleaning procedure as the remaining catalyst particles have a specific role in the end-application. Despite the relatively small amount of Pt in the samples (7.0 ± 0.2%), they show electrochemical features closely resembling those of polycrystalline Pt. In O2-containing environment, the material shows two separate linear ranges for hydrogen peroxide reduction: 1-100 μM and 100-1000 μM with sensitivities of 0.432 μA μM-1 cm-2 and 0.257 μA μM-1 cm-2, respectively, with a 0.21 μM limit of detection. In deaerated solution, there is only one linear range with sensitivity 0.244 μA μM-1 cm-2 and 0.22 μM limit of detection. We suggest that the high sensitivity between 1 μM and 100 μM in solutions where O2 is present is due to oxygen reduction reaction occurring on the CNFs producing a small additional cathodic contribution to the measured current. This has important implications when Pt-containing sensors are utilized to detect hydrogen peroxide reduction in biological, O2-containing environment. en
dc.format.extent 10
dc.format.extent 12742-12751
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries RSC Advances en
dc.relation.ispartofseries Volume 8, issue 23 en
dc.rights openAccess en
dc.subject.other Chemistry(all) en
dc.subject.other Chemical Engineering(all) en
dc.subject.other 213 Electronic, automation and communications engineering, electronics en
dc.subject.other 215 Chemical engineering en
dc.title Pt-grown carbon nanofibers for detection of hydrogen peroxide 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 Chemistry and Materials Science
dc.contributor.department University of Alicante
dc.contributor.department Bio-based Colloids and Materials
dc.contributor.department Department of Bioproducts and Biosystems en
dc.subject.keyword Chemistry(all)
dc.subject.keyword Chemical Engineering(all)
dc.subject.keyword 213 Electronic, automation and communications engineering, electronics
dc.subject.keyword 215 Chemical engineering
dc.identifier.urn URN:NBN:fi:aalto-201805222534
dc.identifier.doi 10.1039/c8ra01703d
dc.type.version publishedVersion

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