Carbon Hollow Spheres As Corrosion Inhibitor Reservoir To Enhance Protective Functioning of Epoxy Coating

Using containers to control the inhibitors release and increment the coatings longevity is of common methods. carbon hollow spheres are novel class of carbon nanostructure containers. they have exceptional properties such as large empty core to load corrosion inhibitors and high mechanical strength that make them excellent candidate to achieve good dispersion in the coatings with less change to break during fabrication and application of coating materials. they have the capability to adjust the shell thickness, porosity, and particle size, which led to their widespread use in various fields. in this work, we synthesized carbon hollow spheres (chs) based silica templating usually known as hard cores. stoberʼs method was employed to synthesize the silica submicron sized spheres. then, a carbon precursor was used to coat the silica particles under hydrothermal conditions. then, carbonization of the coated organic layer was performed at elevated temperature. silica core removal was occurred at highly alkaline conditions. afterward, the inhibitor was loaded into nano-containers and the corrosion protection performance was evaluated on the bare and epoxy coated steel samples immersed in the 3.5% nacl solution. electrochemical results revealed significant corrosion inhibition resulted by the release of corrosion inhibitor.

Carbon hollow spheres as corrosion inhibitor reservoir to enhance protective functioning of epoxy coating

Using containers to control the inhibitors release and increment the coatings longevity is of common methods. Carbon hollow spheres are novel class of carbon nanostructure containers. They have exceptional properties such as large empty core to load corrosion inhibitors and high mechanical strength that make them excellent candidate to achieve good dispersion in the coatings with less change to break during fabrication and application of coating materials. They have the capability to adjust the shell thickness, porosity, and particle size, which led to their widespread use in various fields. In this work, we synthesized carbon hollow spheres (CHS) based silica templating usually known as hard cores. Stoberʼs method was employed to synthesize the silica submicron sized spheres. Then, a carbon precursor was used to coat the silica particles under hydrothermal conditions. Then, carbonization of the coated organic layer was performed at elevated temperature. Silica core removal was occurred at highly alkaline conditions. Afterward, the inhibitor was loaded into nano-containers and the corrosion protection performance was evaluated on the bare and epoxy coated steel samples immersed in the 3.5% NaCl solution. Electrochemical results revealed significant corrosion inhibition resulted by the release of corrosion inhibitor.