▎ 摘　　要

The utilization of graphene (G) based 2D nano-fillers for designing high-performance smart passive/active composites have become a hot topic for researchers. The work concentrated on introducing a graphene-based pHsensitive nano-filler with self-control release ability for improving the active/passive protection ability of the epoxy polymeric coating. In order to access long terms self-healing, a beta-CD nano-container was employed for controlling the encapsulated L-His active agents release (L-His@beta-CD). The inclusion complexes were introduced over the APTES modified graphene oxide (AGO) nano-particles (beta-CD@L-His-AGO) to improve the targeted release property besides considerable passive protection. The particles characteristic was displayed by the spectroscopic techniques. The L-His@beta-CD-AGO inhibition behavior was analyzed by the EIS technique and its protection mechanism was analyzed by Tafel measurement. Investigations evidenced that the designed rGO based nano-composite could reduce 75% of corrosion attacks. Achievements displayed about 14000 Omega.cm(2) resistance enhancement of the designed defected polymeric composite in the comparison with the neat one (after 24 h exposure). Furthermore, EIS outcomes over the intact composite evidenced the barrier protection performance property improvement and in the initial stages, the coating resistance raised to 10,361 M Omega.cm(2) after introducing L-His@beta-CD-AGO into the EP matrix.