Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 312, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2020.113433
Keywords
Camphor leaves extract; Q235 steel; AFM; SEM; Corrosion inhibitor; Langmuir adsorption
Funding
- Natural Science Research Project of Guizhou Department of Education [Qian jiaohe KY [2019]123]
- Natural Science Research Project of Zunyi Normal University, Zunyi Normal University [BS [2019]11]
- National Science Foundation of China [21766040]
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Camphor leaves extract (CLE) as a neoteric and environment friendly inhibitor for Q235 steel in Ha medium was researched via experimental and theoretical researches. In this work, we used green, convenient pure water extraction method to obtain camphor leaves extract. Fourier transform infrared spectroscopy data show that there are many organic molecules with oxygen-containing functional groups in the organic in CLE. Electrochemical experimental data show that CLE is a mixed-type corrosion inhibitor and can exhibit good anti-corrosion performance. The concentration of CLE is 600 mg/L, its corrosion inhibition efficiency is 89.4% at 298 K. Surface morphology analysis (AFM and SEM) vividly shows the corrosion inhibition performance of CLE. The adsorption behavior of CLE onto Q235 steel/solution interface is obey Langmuir single-layer adsorption. Theoretical calculations show that CLE can exhibit good anti-corrosion performance. (C) 2020 Elsevier B.V. All rights reserved.
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