Synthesis and Characterization of Hydrotalcite/Graphene Oxide Containing Benzoate for Corrosion Protection of Carbon Steel

• Published in: Corrosion science and technology Vol. 19; no. 2; pp. 82 - 88
• Main Authors: Nguyen, Thuy Duong, Tran, Boi An, Vu, Ke Oanh, Nguyen, Anh Son, Trinh, Anh Truc, Pham, Gia Vu, To, Thi Xuan Hang, Phan, Thanh Thao
• Format: Journal Article
• Language: Korean
• Published: 한국부식방식학회 30.04.2020
• Subjects: Benzoate; Corrosion inhibition; Graphene oxide; Hydrotalcite; Waterborne epoxy coatings; Benzoate; Hydrotalcite; Graphene oxide; Corrosion inhibition; Waterborne epoxy coatings
• ISSN: 1598-6462

This work examined the corrosion protection performance of benzoate loaded hydrotalcite/graphene oxide (HT/GO-BZ) for carbon steel. HT/GO-BZ was fabricated by the co-precipitation method and characterized by infrared spectroscopy, X-ray diffraction, and scanning electronic microscopy. The corrosion inhibition action of HT/GO-BZ on carbon steel in 0.1 M NaCl solution was evaluated by electrochemical measurements. The benzoate content in HT/GO-BZ was determined by UV-Vis spectroscopy. Subsequently, the effect of HT/GO-BZ on the corrosion resistance of the water-based epoxy coating was investigated by the salt spray test. The obtained results demonstrated the intercalation of benzoate and GO in the hydrotalcite structure. The benzoate content in HT/GO-BZ was about 16%. The polarization curves of the carbon steel electrode revealed anodic corrosion inhibition activity of HT/GO-BZ and the inhibition efficiency was about 95.2% at a concentration of 3g/L. The GO present in HT/GO-BZ enhanced the inhibition effect of HT-BZ. The presence of HT/GO-BZ improved the corrosion resistance of the waterborne epoxy coating.