Highly Concentrated Aqueous Dispersions of Graphene Exfoliated by Sodium Taurodeoxycholate: Dispersion Behavior and Potential Application as a Catalyst Support for the Oxygen-Reduction Reaction

Simple item page
dc.contributor.authorSun, Zhenyu
dc.contributor.authorMasa, Justus
dc.contributor.authorLiu, Zhimin
dc.contributor.authorSchuhmann, Wolfgang
dc.contributor.authorMuhler, Martin
dc.date.accessioned2022-11-16T09:36:44Z
dc.date.available2022-11-16T09:36:44Z
dc.date.issued2012
dc.description.abstractA high-yielding exfoliation of graphene at high concentrations in aqueous solutions is critical for both fundamental study and future applications. Herein, we demonstrate the formation of stable aqueous dispersions of pristine graphene by using the surfactant sodium taurodeoxycholate under tip sonication at concentrations of up to 7.1 mg mL−1. TEM showed that about 8 % of the graphene flakes consisted of monolayers and 82 % of the flakes consisted of less than five layers. The dispersions were stable regardless of freezing (−20 °C) or heat treatment (80 °C) for 24 h. The concentration could be significantly improved to about 12 mg mL−1 by vacuum-evaporation of the dispersions at ambient temperature. The as-prepared graphene dispersions were readily cast into conductive films and were also processed to prepare Pt/graphene nanocomposites that were used as highly active electrocatalysts for the oxygen-reduction reaction.en_US
dc.identifier.citationSun, Z., Masa, J., Liu, Z., Schuhmann, W., & Muhler, M. (2012). Highly concentrated aqueous dispersions of graphene exfoliated by sodium taurodeoxycholate: dispersion behavior and potential application as a catalyst support for the oxygen‐reduction reaction. Chemistry–A European Journal, 18(22), 6972-6978.https://doi.org/10.1002/chem.201103253en_US
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5269
dc.language.isoenen_US
dc.publisherChemistry–A European Journalen_US
dc.subjectelectrochemistry · exfoliation · graphene · oxygen · surfactantsen_US
dc.titleHighly Concentrated Aqueous Dispersions of Graphene Exfoliated by Sodium Taurodeoxycholate: Dispersion Behavior and Potential Application as a Catalyst Support for the Oxygen-Reduction Reactionen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Highly Concentrated Aqueous Dispersions of Graphene Exfoliated by Sodium Taurodeoxycholate Dispersion Behavior and Potential Application as a Catalyst Support for the Oxygen-Reduction Reaction.pdf
Size:
1.52 MB
Format:
Adobe Portable Document Format
Description:
Highly Concentrated Aqueous Dispersions of Graphene Exfoliated by Sodium Taurodeoxycholate: Dispersion Behavior and Potential Application as a Catalyst Support for the Oxygen-Reduction Reaction
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Engineering and Technology