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Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors

For hydrogen sensors built with pure Pd nanowires, the instabilities causing baseline drifting and temperature-driven sensing behavior are limiting factors when working within a wide temperature range. To enhance the material stability, we have developed superlattice-structured palladium and copper...

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Detalles Bibliográficos
Autores principales: Yang, Dachi, Carpena-Núñez, Jennifer, Fonseca, Luis F., Biaggi-Labiosa, Azlin, Hunter, Gary W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3895925/
https://www.ncbi.nlm.nih.gov/pubmed/24440892
http://dx.doi.org/10.1038/srep03773
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author Yang, Dachi
Carpena-Núñez, Jennifer
Fonseca, Luis F.
Biaggi-Labiosa, Azlin
Hunter, Gary W.
author_facet Yang, Dachi
Carpena-Núñez, Jennifer
Fonseca, Luis F.
Biaggi-Labiosa, Azlin
Hunter, Gary W.
author_sort Yang, Dachi
collection PubMed
description For hydrogen sensors built with pure Pd nanowires, the instabilities causing baseline drifting and temperature-driven sensing behavior are limiting factors when working within a wide temperature range. To enhance the material stability, we have developed superlattice-structured palladium and copper nanowires (PdCu NWs) with random-gapped, screw-threaded, and spiral shapes achieved by wet-chemical approaches. The microstructure of the PdCu NWs reveals novel superlattices composed of lattice groups structured by four-atomic layers of alternating Pd and Cu. Sensors built with these modified NWs show significantly reduced baseline drifting and lower critical temperature (259.4 K and 261 K depending on the PdCu structure) for the reverse sensing behavior than those with pure Pd NWs (287 K). Moreover, the response and recovery times of the PdCu NWs sensor were of ~9 and ~7 times faster than for Pd NWs sensors, respectively.
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spelling pubmed-38959252014-01-21 Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors Yang, Dachi Carpena-Núñez, Jennifer Fonseca, Luis F. Biaggi-Labiosa, Azlin Hunter, Gary W. Sci Rep Article For hydrogen sensors built with pure Pd nanowires, the instabilities causing baseline drifting and temperature-driven sensing behavior are limiting factors when working within a wide temperature range. To enhance the material stability, we have developed superlattice-structured palladium and copper nanowires (PdCu NWs) with random-gapped, screw-threaded, and spiral shapes achieved by wet-chemical approaches. The microstructure of the PdCu NWs reveals novel superlattices composed of lattice groups structured by four-atomic layers of alternating Pd and Cu. Sensors built with these modified NWs show significantly reduced baseline drifting and lower critical temperature (259.4 K and 261 K depending on the PdCu structure) for the reverse sensing behavior than those with pure Pd NWs (287 K). Moreover, the response and recovery times of the PdCu NWs sensor were of ~9 and ~7 times faster than for Pd NWs sensors, respectively. Nature Publishing Group 2014-01-20 /pmc/articles/PMC3895925/ /pubmed/24440892 http://dx.doi.org/10.1038/srep03773 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Yang, Dachi
Carpena-Núñez, Jennifer
Fonseca, Luis F.
Biaggi-Labiosa, Azlin
Hunter, Gary W.
Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
title Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
title_full Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
title_fullStr Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
title_full_unstemmed Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
title_short Shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
title_sort shape-controlled synthesis of palladium and copper superlattice nanowires for high-stability hydrogen sensors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3895925/
https://www.ncbi.nlm.nih.gov/pubmed/24440892
http://dx.doi.org/10.1038/srep03773
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