Graphene oxide dispersion, 2 mg/mL,dispersion in H2O – Sigma-Aldrich

Synonyms
Graphene oxide aqueous dispersion

Cas No.
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General description

• Chloride free (purified by dialysis)
• Monolayer sheet
• sheet diameter <10 micron

Graphene oxide (GO) is a one atom thick 2D carbon material with excellent thermal, mechanical, and electrical properties due to its unique structural and morphological features. GO can be easily dispersed in aqueous and polar organic solvents to facilitate its practical use. It can be synthesized by modified Hummer’s method. It can be applied in the fields of drug delivery, energy storage, oil-water separation, immobilization catalysis, desalination, and solar cells.

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Application
Because of the presence of oxygen-containing functional groups and acidic nature, GO can serve as both carbocatalyst as well as a supporting scaffold for various catalytically active species. GO can facilitate many organic transformations such as the oxidation of sulfides, olefins, and various hydrocarbons, Friedel–Crafts reaction, Aza–Michael additions, condensation, and ring-opening polymerization.

It can be used as a support for biocatalysis in organic solvents. For example, carboxyl-functionalized graphene oxide can act as a support to immobilize Yarrowia lipolytica lipase. The immobilized enzyme exhibits a high efficiency for the resolution of the racemic compound in the organic solvent.

It can also be used as a hole transport layer in organic photovoltaic cells.

Features and Benefits

• Good solution processability
• Hydrophilic and easily dispersed in water
• Low production cost
• Presence of rich active oxygen-containing functional groups
• It can be easily functionalized

Large surface area, high chemical stability, good charge carrier properties.[1]

Preparation Note
Product may aggregate over time to form larger particles. Sonicate before use if single layer graphene oxide required.