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dc.contributor.author
Bracamonte, Maria Victoria
dc.contributor.author
Melchionna, Michele
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Giuliani, Angela
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Nasi, Lucía
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Tavagnacco, Claudio
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Prato, Maurizio
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Fornasiero, Paolo
dc.date.available
2018-11-08T13:53:08Z
dc.date.issued
2017-02
dc.identifier.citation
Bracamonte, Maria Victoria; Melchionna, Michele; Giuliani, Angela; Nasi, Lucía; Tavagnacco, Claudio; et al.; H2O2 sensing enhancement by mutual integration of single walled carbon nanohorns with metal oxide catalysts: The CeO2 case; Elsevier Science Sa; Sensors and Actuators B: Chemical; 239; 2-2017; 923-932
dc.identifier.issn
0925-4005
dc.identifier.uri
http://hdl.handle.net/11336/63945
dc.description.abstract
The importance of sensing hydrogen peroxide (H2O2) is due to its ubiquity, being extensively used in industry and also being a biologically relevant side-product of several enzymatic processes. Electrochemical sensing is one of the most robust and simple methods for sensing H2O2 and the discovery of new electroactive materials, particularly at the nanoscale, represents a very hot topic of research. Here, we prove that upon appropriate integration of oxidized single-walled carbon nanohorns (ox-SWCNHs) into a per se moderate H2O2 sensor such as cerium dioxide (CeO2), the sensitivity toward H2O2 is enhanced by almost two orders of magnitude (from 0.4 to 160 μA cm−2 mM−1), on par with that of state-of-the-art metal or metal oxide-based sensors. The modified electrode is also very stable (82% response after 2 weeks of continuous use) and the results highly reproducible. The developed nanohybrid ox-SWCNHs@CeO2, characterized fully and whose average size is about 70 nm as measured by both TEM and AFM, was also tested in real case studies such as washing liquids and milk and was confirmed to be a robust and highly selective material, being not affected neither by the presence of complex matrices, nor by interferents in several organic substrates. The high recovery confirmed the excellent specificity and flexibility of this new electrocatalytic material.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Carbon Nanohorns
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Cerium Dioxide
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Electro-Catalysis
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Hydrogen Peroxide
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Sensor
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
H2O2 sensing enhancement by mutual integration of single walled carbon nanohorns with metal oxide catalysts: The CeO2 case
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-22T18:18:20Z
dc.journal.volume
239
dc.journal.pagination
923-932
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Bracamonte, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. University of Trieste; Italia
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Fil: Melchionna, Michele. University of Trieste; Italia
dc.description.fil
Fil: Giuliani, Angela. University of Trieste; Italia
dc.description.fil
Fil: Nasi, Lucía. CNR-IMEM Institute; Italia
dc.description.fil
Fil: Tavagnacco, Claudio. University of Trieste; Italia
dc.description.fil
Fil: Prato, Maurizio. University of Trieste; Italia. Carbon Nanobiotechnology Laboratory; España. BasqueFdnSci; España
dc.description.fil
Fil: Fornasiero, Paolo. University of Trieste; Italia
dc.journal.title
Sensors and Actuators B: Chemical
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.snb.2016.08.112
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0925400516313454
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