Self-healing effect of graphene@PANI loaded with benzotriazole for carbon steel

• DOI: 10.1016/j.corsci.2019.108246
• Publication Date: 2019-11-01T17:45:19Z
• Authors: Yongsheng Hao; Yifan Zhao; Bo Li; Lixin Song; Zhuo Guo
• Keywords: Benzotriazole; Carbon steel; Corrosion inhibitor

Abstract In the present work, polyaniline decorated graphene (graphene@PANI) as an inhibitor container loaded with benzotriazole (graphene@PANI@BTA) was prepared and benzotriazole loading concentration in graphene@PANI can reach to 16.2 wt.%. The release experiment illustrates that benzotriazole can be released in a short time and provide an effective protection for carbon steel. Electrochemical measurements results show that epoxy coating containing 0.5 wt. % graphene@PANI@BTA has the best protection and a noticeable self-healing function. The corrosion inhibition mechanism of graphene@PANI@BTA is attributed to the synergistic interaction of graphene, polyaniline, and benzotriazole.