APTES-modified graphene oxide loaded with cerium dibutylphosphate as two-dimensional nanocomposites for enhancing corrosion protection properties. (1st April 2023)

• Record Type: Journal Article
• Authors: Kong, Xiangxin; Liu, Jianhua; Li, Songmei; Yu, Mei
• Is Part Of: Corrosion science. Volume 213(2023)
• Publication Date: 2023-04-01
• Subjects: Two-dimensional structure -- Bi-functional inhibitor -- pH-responsive release -- Self-healing performance -- Corrosion protection property; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2023.110966
• Languages: English
• ISSNs: 0010-938X

Abstract

Abstract: The bi-functional inhibitor cerium dibutylphosphate (Ce(dbp)3 ) was loaded onto the synthesized 3-aminopropyl-triethoxysilane (APTES)-modified GO via the chelation of amine groups with Ce 3+ cations to obtain GO@APTES-Ce(dbp)3 (GAC) two-dimensional nanocomposites. The pH-responsive release of inhibitor Ce(dbp)3 from GAC nanocomposites at different pH was investigated through Quantum chemical calculation and UV–vis spectra. Scanning Vibrating Electrode Technique and Electrochemical impedance spectroscopy results demonstrated that GAC nanocomposites provide an excellent corrosion protection property through the synergistic effect of the self-healing performance of bi-functional inhibitor Ce(dbp)3 and the barrier property originated from 2D structure of GAC nanocomposites. Graphical Abstract: ga1 Highlights: GO@APTES-Ce(dbp)3 (GAC) two-dimensional nanocomposites were synthesized. The controlled release of Ce(dbp)3 from GAC nanocomposites can be stimulated by the change of pH. Quantum chemical calculation and SVET clarified the release and protective mechanisms of Ce(dbp)3 . GAC nanocomposites provided an excellent corrosion protection property for sol-gel coating.