Corrosion protection of carbon steel using hydrotalcite/graphene oxide nanohybrid

• Published in: JCT research Vol. 16; no. 2; pp. 585 - 595
• 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, Minh Vuong, Phan, Thanh Thao
• Format: Journal Article
• Language: English
• Published: New York Springer US 15-03-2019; Springer Nature B.V
• Subjects: Aluminum; Carbon steel; Carbon steels; Carbon-epoxy composites; Chemistry and Materials Science; Coating effects; Corrosion and Coatings; Corrosion effects; Corrosion inhibitors; Corrosion potential; Corrosion prevention; Corrosion resistance; Corrosion resistant steels; Electron microscopes; Fourier transforms; Graphene; Industrial Chemistry/Chemical Engineering; Materials Science; Organic coatings; Polymer Sciences; Protective coatings; Salt spray tests; Scanning electron microscopy; Surface charge; Surfaces and Interfaces; Thermogravimetric analysis; Thin Films; Transmission electron microscopy; Tribology; X-ray diffraction; Zeta potential; Hydrotalcite; Nanohybrid; Carbon steel; Graphene oxide; Corrosion inhibition
• ISSN: 1547-0091; 1935-3804; 2168-8028
• DOI: 10.1007/s11998-018-0139-3

Zinc aluminum hydrotalcite/graphene oxide (HTC-GO) nanohybrid as inhibition additive for organic coatings was prepared using the co-precipitation method. The synthesized HTC-GO was characterized using Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy, and thermogravimetric analysis. Surface charge properties of HTC-GO were evaluated with zeta potential measurement. The corrosion inhibition effect of HTC-GO on carbon steel in NaCl solution was investigated using electrochemical methods, energy-dispersive X-ray, and SEM. The effect of HTC-GO on corrosion resistance of epoxy coating applied on carbon steel was evaluated by salt spray test. It was shown that hydrotalcite structures were formed on GO surface, subsequently becoming hydrotalcite/graphene oxide nanohybrid. The results obtained by electrochemical measurements indicate that HTC-GO is an anodic corrosion inhibitor with an inhibition efficiency of about 92% at 1 g/L concentration. The presence of intercalated GO improved the barrier properties and adsorption of HTC-GO on steel surface. The corrosion resistance of epoxy coatings was improved with 1 wt% HTC-GO.