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A Comparative Investigation of Chemically Reduced Graphene Oxide Thin Films Deposited via Spray Pyrolysis
[Image: see text] We present a comparative investigation between thin films of graphene oxide (GO) and chemically reduced graphene oxide (rGO) deposited onto glass substrates via spray pyrolysis. Two reduction techniques are investigated: (1) the exposition of a sprayed layer of GO to vapors of hydr...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9016891/ https://www.ncbi.nlm.nih.gov/pubmed/35449940 http://dx.doi.org/10.1021/acsomega.2c00108 |
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author | Bargaoui, Ilhem Bitri, Nabila Ménard, Jean-Michel |
author_facet | Bargaoui, Ilhem Bitri, Nabila Ménard, Jean-Michel |
author_sort | Bargaoui, Ilhem |
collection | PubMed |
description | [Image: see text] We present a comparative investigation between thin films of graphene oxide (GO) and chemically reduced graphene oxide (rGO) deposited onto glass substrates via spray pyrolysis. Two reduction techniques are investigated: (1) the exposition of a sprayed layer of GO to vapors of hydrazine hydrate to produce rGO(V) and (2) the addition of liquid hydrazine hydrate to a suspended GO solution, which is then sprayed onto a substrate to produce rGO(L). Three different spectroscopy techniques, Raman, Fourier transform infrared, and UV–Vis–NIR, show that the two reduced samples have less lattice disorder in comparison to GO, with rGO(L) having the highest degree of reduction. Interestingly, topography characterization by atomic force microscopy reveals a morphological change occurring during the exposure to hydrazine hydrate vapors, resulting in a thickness of 110 nm for the rGO(V) film, which is a factor of 16 larger than rGO(L) and GO. Finally, I–V measurements show a significant decrease of the GO’s resistivity after the reduction process, where rGO(L) features a resistivity 90 times lower than rGO(V), confirming that rGO(L) has the highest degree of reduction. Our results indicate that the reduction process for rGO(V) is susceptible to introducing intercalated water molecules in the material while the fabrication technique for rGO(L) is a suitable route to obtain a material with minimal lattice disorder and properties approaching those of graphene. |
format | Online Article Text |
id | pubmed-9016891 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-90168912022-04-20 A Comparative Investigation of Chemically Reduced Graphene Oxide Thin Films Deposited via Spray Pyrolysis Bargaoui, Ilhem Bitri, Nabila Ménard, Jean-Michel ACS Omega [Image: see text] We present a comparative investigation between thin films of graphene oxide (GO) and chemically reduced graphene oxide (rGO) deposited onto glass substrates via spray pyrolysis. Two reduction techniques are investigated: (1) the exposition of a sprayed layer of GO to vapors of hydrazine hydrate to produce rGO(V) and (2) the addition of liquid hydrazine hydrate to a suspended GO solution, which is then sprayed onto a substrate to produce rGO(L). Three different spectroscopy techniques, Raman, Fourier transform infrared, and UV–Vis–NIR, show that the two reduced samples have less lattice disorder in comparison to GO, with rGO(L) having the highest degree of reduction. Interestingly, topography characterization by atomic force microscopy reveals a morphological change occurring during the exposure to hydrazine hydrate vapors, resulting in a thickness of 110 nm for the rGO(V) film, which is a factor of 16 larger than rGO(L) and GO. Finally, I–V measurements show a significant decrease of the GO’s resistivity after the reduction process, where rGO(L) features a resistivity 90 times lower than rGO(V), confirming that rGO(L) has the highest degree of reduction. Our results indicate that the reduction process for rGO(V) is susceptible to introducing intercalated water molecules in the material while the fabrication technique for rGO(L) is a suitable route to obtain a material with minimal lattice disorder and properties approaching those of graphene. American Chemical Society 2022-03-29 /pmc/articles/PMC9016891/ /pubmed/35449940 http://dx.doi.org/10.1021/acsomega.2c00108 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Bargaoui, Ilhem Bitri, Nabila Ménard, Jean-Michel A Comparative Investigation of Chemically Reduced Graphene Oxide Thin Films Deposited via Spray Pyrolysis |
title | A Comparative Investigation of Chemically Reduced
Graphene Oxide Thin Films Deposited via Spray Pyrolysis |
title_full | A Comparative Investigation of Chemically Reduced
Graphene Oxide Thin Films Deposited via Spray Pyrolysis |
title_fullStr | A Comparative Investigation of Chemically Reduced
Graphene Oxide Thin Films Deposited via Spray Pyrolysis |
title_full_unstemmed | A Comparative Investigation of Chemically Reduced
Graphene Oxide Thin Films Deposited via Spray Pyrolysis |
title_short | A Comparative Investigation of Chemically Reduced
Graphene Oxide Thin Films Deposited via Spray Pyrolysis |
title_sort | comparative investigation of chemically reduced
graphene oxide thin films deposited via spray pyrolysis |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9016891/ https://www.ncbi.nlm.nih.gov/pubmed/35449940 http://dx.doi.org/10.1021/acsomega.2c00108 |
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