Large-diameter graphene oxide sheets

Overview
Graphene oxide (GO) is an oxidized form of graphite that serves as a key precursor in graphene production. Initially discovered in 1859 by Benjamin Brodie, this two-dimensional nanomaterial consists of single to few atomic layers containing both sp² and sp³ hybridized carbon atoms. Its surface is rich in oxygen functional groups—such as hydroxyl, carboxyl, and epoxy groups—which provide high hydrophilicity and excellent water dispersibility.

Specifications

• Form: Sheet/flake

• Flake Diameter: >5 μm

• Layer Count: 1–6 layers

• Functional Groups: Hydroxyl, epoxy, carboxyl

Key Features

• Large Flake Size: Diameters exceeding 5 μm provide higher loading capacity and improved electrical and mechanical performance in composites.

• Excellent Dispersion: Stable in water and various solvents, facilitating easy mixing and processing.

• Rich Surface Chemistry: Oxygen-containing groups allow straightforward chemical modification and functionalization.

• Abundant Active Sites: High density of reactive sites supports strong interactions with polymers, metals, and biomolecules.

• Tunable Properties: Optical and electrical characteristics can be adjusted via reduction, chemical doping, or functional group engineering.

Applications

• Electronics: Base material for field-effect transistors, flexible sensors, biosensors, and conductive films.

• Energy Storage: Electrode component in lithium-ion batteries and supercapacitors for enhanced capacity and charge/discharge performance.

• Biomedicine: Drug carrier for targeted cancer therapy and scaffold material in tissue engineering.

• Environmental Materials: Used in composite filters and catalysts for air purification and pollutant conversion.

• Polymer Composites: Reinforcing filler in polyurethane, polystyrene, PLA, PP, and PMMA foams to improve mechanical and functional properties.

• Optical Sensing: Serves as a fluorescence quencher in FRET-based biosensors.

Usage Guidelines

• Avoid prolonged ultrasonication to prevent sheet fragmentation.

• Store in a dark, dry environment at temperatures below 20°C.

• Solid dispersions should be processed under temperature control (<20°C).

• Unopened shelf life: 6 months.

Contact Us
For product details or custom requirements, please contact:
sales@maxnanotech.com