Abstract
A novel electrochemically assisted deposition technique (EAT) was proposed to construct graphene-based nanocontainers that store corrosion inhibitors. EAT enables graphene (Gr, rather than graphene oxide, GO) to be used for the first time to fabricate composite nanocontainers. Silica films deposited on graphene nanosheets by EAT have high coverage, strong adherence and can be up to 60 nm thick. The resulting Gr/SiO2 nanocontainers were further modified by dodecyltrimethoxysilane (DTMS) to prepare superhydrophobic nanocontainers. The high-barrier graphene and hydrophobically modified SiO2 in Gr/SiO2/DTMS nanocontainers could synergistically resist corrosive mediums. The polyvinyl butyral coatings doped with Gr/SiO2/DTMS nanocontainers pre-loaded with inhibitors exhibited excellent protective properties.
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