Self-formation of protective layer on carbon steel surface in 1 M HCl solution containing Barringtonia acutangula leaf extract
Self-formation of protective layer on carbon steel surface in 1 M HCl solution containing Barringtonia acutangula leaf extract
Thanh-Nha Tran(Graduate University of Science and Technology, Vietnam Academy of Science and Technology;Thu Dau Mot University); Thien Tri Tran(Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU)); Deok Su Jo(Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU)); Phan-Si-Nguyen Dong(Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University;The Faculty of Environmental and Chemical Engineering, Duy Tan University); Van-Kieu Nguyen(Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University;The Faculty of Environmental and Chemical Engineering, Duy Tan University); Thanh Liem Huynh(Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University;The Faculty of Environmental and Chemical Engineering, Duy Tan University); Nam Nguyen Dang(Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University;The Faculty of Environmental and Chemical Engineering, Duy Tan University)
135권, 175~187쪽
초록
Corrosion inhibitors based on leafs have been suggested as a potential candidate due to their availability asnatural materials, environmental friendliness, low cost and regeneration. In this study, the chemical investigationof Barringtonia acutangula leaf - water extract (BALE) was conducted by chromatography and nuclear magneticresonance (NMR). For the first time, the presence of five terpenoids including ilexosapogenin A, arjunic acid,taraxerol, tormentic acid and α-amyryltetracosanoate was reported. In addition, 3000 ppm BALE is shown to be apossible mixed corrosion inhibitor for carbon steel in 1 M HCl solution. A robust and smooth protective layerwith 14.3 nm of surface roughness was created, displaying a great inhibition efficiency of 97.01 ± 0.18 %. On theother hand, uninhibited surfaces displayed serious corrosion at a rapid rate. X-ray photoelectron spectroscopyresults confirmed the association of the main BALE components with iron oxides/hydroxides in the protectivefilm layer, ensuring higher inhibition performance. Therefore, the work presented potential materials added tothe corrosion inhibitor system as well as a novel process for precisely characterizing the chemical constituents inplant extracts used as the corrosion inhibitor.
Abstract
Corrosion inhibitors based on leafs have been suggested as a potential candidate due to their availability asnatural materials, environmental friendliness, low cost and regeneration. In this study, the chemical investigationof Barringtonia acutangula leaf - water extract (BALE) was conducted by chromatography and nuclear magneticresonance (NMR). For the first time, the presence of five terpenoids including ilexosapogenin A, arjunic acid,taraxerol, tormentic acid and α-amyryltetracosanoate was reported. In addition, 3000 ppm BALE is shown to be apossible mixed corrosion inhibitor for carbon steel in 1 M HCl solution. A robust and smooth protective layerwith 14.3 nm of surface roughness was created, displaying a great inhibition efficiency of 97.01 ± 0.18 %. On theother hand, uninhibited surfaces displayed serious corrosion at a rapid rate. X-ray photoelectron spectroscopyresults confirmed the association of the main BALE components with iron oxides/hydroxides in the protectivefilm layer, ensuring higher inhibition performance. Therefore, the work presented potential materials added tothe corrosion inhibitor system as well as a novel process for precisely characterizing the chemical constituents inplant extracts used as the corrosion inhibitor.
- 발행기관:
- 한국공업화학회
- 분류:
- 화학공학