Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Synthesis and Characterization of Hydrotalcite/Graphene Oxide Containing Benzoate for Corrosion Protection of Carbon Steel

  • Nguyen, Thuy Duong (Institute for Tropical Technology, Vietnam Academy of Science and Technology) ;
  • Tran, Boi An (Institute of Chemical Technology, Vietnam Academy of Science and Technology) ;
  • Vu, Ke Oanh (Institute for Tropical Technology, Vietnam Academy of Science and Technology) ;
  • Nguyen, Anh Son (Institute for Tropical Technology, Vietnam Academy of Science and Technology) ;
  • Trinh, Anh Truc (Institute for Tropical Technology, Vietnam Academy of Science and Technology) ;
  • Pham, Gia Vu (Institute for Tropical Technology, Vietnam Academy of Science and Technology) ;
  • To, Thi Xuan Hang (Institute for Tropical Technology, Vietnam Academy of Science and Technology) ;
  • Phan, Thanh Thao (Institute of Chemical Technology, Vietnam Academy of Science and Technology)
  • Received : 2020.02.28
  • Accepted : 2020.03.30
  • Published : 2020.04.29
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Abstract

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.

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