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Percolating Metallic Structures Templated on Laser-Deposited Carbon Nanofoams Derived from Graphene Oxide: Applications in Humidity Sensing

Cite this: ACS Appl. Nano Mater. 2018, 1, 4, 1828–1835
Publication Date (Web):March 20, 2018
https://doi.org/10.1021/acsanm.8b00246
Copyright © 2018 American Chemical Society

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    Abstract

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    Carbon nanofoam (CNF) is a low-density, high-surface-area material formed by aggregation of amorphous carbon nanoparticles into porous nanostructures. We report the use of a pulsed infrared laser to prepare CNF from a graphene oxide (GO) target material. Electron microscopy shows that the films consist of dendritic strings that form web-like three-dimensional structures. The conductivity of these structures can be modified by using the CNF as a nanostructured scaffold for gold nanoparticles deposited by sputter coating, controllably increasing the conductivity by up to 4 orders of magnitude. The ability to measure the conductivity of the porous structures allows electrochemical measurements in the environment. Upon decreasing humidity, the pristine CNF exhibits an increase in resistance with a quick response and recovery time. By contrast, the gold-sputtered CNF showed a decrease in resistance, indicating modification of the doping mechanism due to water adsorption. The sensitivity to humidity is eliminated at the percolation threshold of the metal on the CNF.

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    Cited By

    This article is cited by 12 publications.

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    2. Amelie Ferrand, Mohamed Siaj, Jerome P. Claverie. Graphene, the Swiss Army Knife of Nanomaterials Science. ACS Applied Nano Materials 2020, 3 (8) , 7305-7313. https://doi.org/10.1021/acsanm.0c02055
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    4. Sebastian Nufer, Matthew J. Large, Alice A. K. King, Sean P. Ogilvie, Adam Brunton, Alan B. Dalton. Edge-Selective Gas Detection Using Langmuir Films of Graphene Platelets. ACS Applied Materials & Interfaces 2018, 10 (25) , 21740-21745. https://doi.org/10.1021/acsami.8b05105
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    9. Yangwoo Lee, Sung‐Kon Kim, Ye‐Jin Park, Jiung Cho, Hyung‐Jun Koo. A humidity‐sensing composite microfiber based on moisture‐induced swelling of an agarose polymer matrix. Polymer Composites 2019, 40 (9) , 3582-3587. https://doi.org/10.1002/pc.25220
    10. Ahmed Barhoum, Ahmed Esmail Shalan, Soliman I. El-Hout, Gomaa A. M. Ali, Sabah M. Abdelbasir, Esraa Samy Abu Serea, Ahmed H. Ibrahim, Kaushik Pal. A Broad Family of Carbon Nanomaterials: Classification, Properties, Synthesis, and Emerging Applications. 2019, 1-40. https://doi.org/10.1007/978-3-319-42789-8_59-1
    11. Ahmed Barhoum, Ahmed Esmail Shalan, Soliman I. El-Hout, Gomaa A. M. Ali, Sabah M. Abdelbasir, Esraa Samy Abu Serea, Ahmed H. Ibrahim, Kaushik Pal. A Broad Family of Carbon Nanomaterials: Classification, Properties, Synthesis, and Emerging Applications. 2019, 1-40. https://doi.org/10.1007/978-3-319-42789-8_59-2
    12. Ahmed Barhoum, Soliman I. El-Hout, Gomaa A. M. Ali, Esraa Samy Abu Serea, Ahmed H. Ibrahim, Kaushik Pal, Ahmed Esmail Shalan, Sabah M. Abdelbasir. A Broad Family of Carbon Nanomaterials: Classification, Properties, Synthesis, and Emerging Applications. 2019, 451-490. https://doi.org/10.1007/978-3-319-53655-2_59

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