Version 1
: Received: 14 October 2021 / Approved: 18 October 2021 / Online: 18 October 2021 (10:59:45 CEST)
Version 2
: Received: 11 January 2022 / Approved: 13 January 2022 / Online: 13 January 2022 (13:44:03 CET)
How to cite:
Cuadros-Lugo, E.; Martinez-Rodríguez, H.A.; Lardizabal-Gutiérrez, D.; Estrada-Guel, I.; Herrera-Ramirez, J.M.; Carreño-Gallardo, C. Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study. Preprints2021, 2021100240. https://doi.org/10.20944/preprints202110.0240.v2
Cuadros-Lugo, E.; Martinez-Rodríguez, H.A.; Lardizabal-Gutiérrez, D.; Estrada-Guel, I.; Herrera-Ramirez, J.M.; Carreño-Gallardo, C. Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study. Preprints 2021, 2021100240. https://doi.org/10.20944/preprints202110.0240.v2
Cuadros-Lugo, E.; Martinez-Rodríguez, H.A.; Lardizabal-Gutiérrez, D.; Estrada-Guel, I.; Herrera-Ramirez, J.M.; Carreño-Gallardo, C. Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study. Preprints2021, 2021100240. https://doi.org/10.20944/preprints202110.0240.v2
APA Style
Cuadros-Lugo, E., Martinez-Rodríguez, H.A., Lardizabal-Gutiérrez, D., Estrada-Guel, I., Herrera-Ramirez, J.M., & Carreño-Gallardo, C. (2022). Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study. Preprints. https://doi.org/10.20944/preprints202110.0240.v2
Chicago/Turabian Style
Cuadros-Lugo, E., Jose M. Herrera-Ramirez and Caleb Carreño-Gallardo. 2022 "Graphene Prepared via the Dry Ice in Flames Method and its Purification Using Different Routes: A Comparative Study" Preprints. https://doi.org/10.20944/preprints202110.0240.v2
Abstract
Although the dry ice method used to synthesize exfoliated graphite/graphene is little known and used, it has significant advantages over others: it is low cost, simple, and a large quantity of material can be obtained using some inorganic and highly available acids (which can be reused). Despite the above advantages, the main reason for its incipient development is the resulting presence of magnesium oxide in the final product. In the present work, three different treat-ments were tested to remove this remnant using some acid chemical leaching processes, making use of hydrochloric acid, aqua regia, and piranha solution. Based on the experimental evidence, it was found that using aqua regia and combining the leaching process with mechanical milling was the most efficient way of removing such a remnant, the residue being only 0.9 wt.%. This value is low when compared to that obtained with the other acid leaching solutions and purifi-cation process (2.8 - 29.6 wt.%). A mandatory high-energy mechanical milling stage was neces-sary during this treatment, in order to expose and dissolve the highly insoluble oxide without secondary chemical reactions on the graphenes. High-energy mechanical milling is an effective route to exfoliate graphite/graphene, which allows the magnesium oxide to be more susceptible to acid treatment. The obtained surface area was 504 m2g-1; this high value resulting from the in-tense exfoliation can potentiate the use of this material for a wide variety of applications.
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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