A critical review on the production and application of graphene and graphene-based materials in anti-corrosion coatings

Abstract

Among the many potential applications of graphene and graphene-based materials, their use as protective films or as additives in coatings for corrosion protection has seen an increased level of interest in the last decade. Much of this interest is motivated by the need to implement additional functionalities, to enhance anti-corrosion performance and to ultimately extend the service life of metallic structures. Pristine graphene films, with their impermeable nature allied to flexibility and mechanical strength, appear as particularly attractive candidates for barrier films against corrosive agents, while graphene-based materials such as graphene oxide and reduced graphene oxide offer a wide range of opportunities for their dispersion in polymeric matrices for composite anti-corrosive coatings. Simultaneously, considerable progress in the development of scalable graphene and graphene-based materials production techniques has been made during the last several years. Currently, a broad range of graphene materials with different morphologies and properties is available, making the need for an adequate fit between the production method and the desired application even more evident. This review article aims to give the reader a general overview of the recent trends in both the production of graphene and graphene-based materials, and their implementation in different anti-corrosion solutions. Moreover, the present work provides a critical look on this subject, highlighting the areas in need of further exploration.

Immunosensing Based on Optical Fiber Technology: Recent Advances

“…Over the years, graphene and its derivates, namely graphene oxide (GO) and reduced GO (rGO), started being included in plasmonic optical fiber sensors. Graphene is a mechanically strong and chemically inert two-dimensional (2D) carbon allotrope, with a zero-band gap [25,43] and a hexagonal lattice structure that prevents the passage of oxygen molecules and thus inhibits oxidation [42,45]. Several studies have proven that the addition of a graphene layer to a metal surface improves sensitivity [24,43].…”

Simulations of Graphene Oxide Dispersions as Discotic Nematic Liquid Crystals in Couette Flow Using Ericksen-Leslie (EL) Theory

“…An example of a nanoparticle solution that forms discotic nematic liquid crystal (DNLC) is graphene oxide (GO) aqueous solution. GO has attracted significant attention due to its specific rheological properties [7][8][9][10][11][12]. The chemical structure and physical properties of fringence within an image of light scattering appeared.…”

A Review on the Applications of Graphene in Mechanical Transduction

“…[ 16,17 ] While in the early days of graphene there was a focus on its peculiar and outstanding electronic properties, the lack of a bandgap hindered some expectations on its application in this field, as efficient logical switching remains elusive. [ 18–22 ] Nonetheless, graphene has boomed in the last 17 years, used for applications in many different fields: as a filler to improve the structural properties of composite materials and coatings, while modifying their electrical, thermal, and anticorrosion properties; [ 23–26 ] as a substitute for metals as a conductor for electromagnetic interference shielding; [ 27–29 ] as a transparent conductor with added flexibility replacing conventional metal‐oxides; [ 30–32 ] enhancing energy gathering in solar cells; [ 33,34 ] as a standalone or catalyst enhancer, boosting storage in super capacitors and batteries; [ 35–38 ] as a membrane and filter for water purification and selective contaminant adsorption; [ 39–41 ] as a key component in drug delivery and theragnostics; [ 42,43 ] as a platform to study quantum phenomena and develop the knowledge of condensed matter physics (spintronics, superconductivity, topological insulators, photonics, plasmonics) [ 44–48 ] and as a transduction material, both as a sensor or actuator. [ 49–62 ] As a transducer, graphene has found applications in optoelectronic sensors and modulators, with enhanced properties in the IR and THz spectral regions and strong impact in the field of telecommunications, [ 63–66 ] in chemical and biochemical sensors with high sensitivity, either in liquids or gases, moving toward a point‐of‐care analysis paradigm, [ 67–71 ] and in mechanical transductors, as a sensor or actuator, exploring a variety of mechanisms where graphene can be used as the active material of the sensor or as an enhancer of the performance of other materials.…”