Graphene Oxide

Encabezado Óxido de Grafeno

Graphene
Oxide

Introduction to Graphene Oxide

Graphene oxide (GO) is the most well-known and, arguably, the most commercially used variant of graphene, thanks to its scalability, solubility in water, and ease of manipulation.

GO is a modified graphene with oxygen and hydrogen molecules anchored to its surface; these molecules, also known as functional groups or oxygenated groups, keep graphene sheets stable in dispersion and facilitate their interaction with other nanostructures or molecules for the design of new products.

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Applications

Graphene and graphene oxide (GO) are materials with very similar structures and characteristics, therefore, both have the ability to combine with other molecules or nanoparticles to modify and develop new compounds. The main differences between them are that GO is an insulating and water-soluble material that makes it the ideal candidate for the design of applications that require such conditions, such as:

Graphene Oxide, application in coatings and inks

Coatings and inks: anti-corrosive and antimicrobial.

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Graphene Oxide, application in construction

Construction: additives for cement-based structures, asphalt mixtures, concrete fibers.

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Graphene Oxide, application in plastics and specialized resins

Plastics and specialized resins: mechanical strength and protection against UV radiation.

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Graphene Oxide, application in medicine

Medicine: biopolymers and biosensors.

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Graphene Oxide, application in water technologies

Water technologies: membranes for filtration, desalination, decontamination

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Stronger and more durable concrete thanks to Graphene Oxide

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PACKAGING PRESENTATIONs

Graphene Oxide in pellets format MasterbatchesGraphene Oxide in paste format PasteGraphene Oxide in powder format PowderGraphene Oxide in water or ethanol dispersions format Dispersions in water or ethanol
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Masterbatches improved with Graphene Oxide

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PROPERTIES

Graphene Oxide has a large surface area

LARGE SURFACE AREA

Graphene oxide (GO) is characterized by having an extensive surface area composed of a single layer of carbon atoms and numerous oxygenated groups anchored to its surface. These groups, in addition to facilitating its dispersion in water, are also the sites of interaction of GO with other molecules or structures to transfer its properties. For example, with the C-S-H crystals of cement and with the polymeric chains of other materials that facilitate its integration and densification within 3D structures.

Graphene Oxide is an insulator

INSULATION

The oxygenated groups that are distributed along the surface of GO are responsible for the absence of thermal and electrical conductivity in this material. However, GO is also often considered as a hybrid structure because, from chemical or thermal treatments, these groups can disappear and repair the graphene structure. In this way, it is possible to partially recover its conductive properties.

Graphene Oxide is self-healing

SELF-HEALING

If any of the sheets of GO lose atoms, the neighboring atoms interact to fill in the gaps, restoring their connections. This process allows graphene sheets to maintain their structure and properties even when faced with deformations and damage.

Graphene Oxide has hardness and stiffness

HARDNESS AND RIGIDITY

The mechanical properties of GO are slightly inferior to those of graphene, but superior to those of common materials. In other words, GO is still a material with high hardness and stiffness, so it is resistant to penetration and can withstand large stresses without deforming. Its use is ideal for applications that require resistance and durability.

Graphene Oxide is flexible and elastic

FLEXIBILITY AND ELASTICITY

Graphene oxide (GO) is a flexible and elastic material that can be stretched without breaking. This makes it a good candidate for applications where durability is important, such as in plastics, textiles, and construction materials.

Graphene Oxide is resistant to UV radiation

RESISTANT TO UV RADIATION

Unlike many materials that deteriorate or degrade due to the effects of UV radiation, GO maintains its structural integrity and mechanical properties; This makes it a promising candidate for applications requiring long-lasting protection from sunlight, such as protective coatings, plastics, textiles, and building materials. It can also be used in environments where radiation is emitted (hospitals), to create safer areas for health and to reduce the deterioration of exposed materials.

Graphene Oxide is waterproof

WATERPROOF

The density and impermeability of GO is astonishing and stands out for its ability to act as an almost perfect barrier against the penetration of liquids and gases, even the smallest ones, such as helium. This sparked interest in membrane technologies for filtration and removal of toxins in water, desalination and even for biofuel production. Other industries that today benefit from this property are construction and coatings.

Graphene Oxide is antimicrobial

ANTIMICROBIAL

The arrangement and electronic density of both graphene and GO sheets creates a sinuous and repulsive path against the adhesion and growth of microorganisms from their surface to the interior of their structure. Furthermore, its biocompatibility has allowed it to enter the medical field mainly for tissue engineering in bone and skin regeneration or for the design of joint prostheses or dental materials for the design of materials with longer useful life thanks to greater mechanical resistance, better cellular stimulation and lower risk of infection.

The combination of biocompatibility and antimicrobial activity makes GO a versatile and promising material in the search for innovative solutions to improve people’s health and quality of life.

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