In this study, a novel anticorrosive pigment is introduced to fabricate a smart epoxy coating with bi-active/passive protection capabilities. For this purpose, the dual functionalized S, P-doped graphene oxide (GO) structure was synthesized through the rationed devised approach using phytic acid and polythiophene. The thiophene monomer was successfully polymerized on the modified rGO-Phytic acid (rGO-Phy) sheets. It was observed that the polythiophene nano-scale particles well decorated the rGO-Phy surface, which was proved via Raman, FT-IR, UV–Vis, SEM-EDS, XRD, and TGA analyses. The developed nano-composites were also introduced into the epoxy coating for anti-corrosive purposes. The corrosion retardation performance of the exerted coatings on the mild steel panels shows that the rGO-Phytic acid-Polythiophene (rGO-Phy-Pth) nano-composites inclusion into the epoxy composite coating endows the self-healing performance in line with the extraordinary barrier feature bring about the stable protection for almost 9 weeks. The achieved outstanding self-healing potential is assigned to the simultaneous controlled release of the polythiophene and phytic acid at the damaged area from the GO sheets, resulting in a film formation with increasing the resistance up to 50 kΩ cm² while the blank sample demonstrated the decreasing trend.

在这项研究中，引入了一种新型防腐颜料来制造具有双主动/被动保护能力的智能环氧涂层。为此，通过使用植酸和聚噻吩的合理设计方法合成了双功能化的 S、P 掺杂氧化石墨烯 (GO) 结构。噻吩单体在改性的 rGO-植酸 (rGO-Phy) 片上成功聚合。观察到聚噻吩纳米级颗粒很好地装饰了 rGO-Phy 表面，这通过拉曼、FT-IR、UV-Vis、SEM-EDS、XRD 和 TGA 分析得到证实。出于防腐目的，还将开发的纳米复合材料引入环氧树脂涂层中。低碳钢板上施加涂层的缓蚀性能表明，rGO-植酸-聚噻吩（rGO-Phy-Pth）纳米复合材料包含在环氧复合涂层中，赋予了符合非凡屏障的自修复性能功能带来近 9 周的稳定保护。获得的出色自愈能力归因于聚噻吩和植酸在 GO 片受损区域的同时受控释放，导致薄膜形成，电阻增加至 50 kΩ cm²而空白样品则呈下降趋势。