期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 37, 期 -, 页码 47-56出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2016.03.006
关键词
Cryptostegia grandiflora; Phenolic compounds; Corrosion; Electrochemical studies; Atomic force microscopy
资金
- Basic Science Research Program through National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2014R1A2A2A01002202]
The total phenolic and flavonoid compounds present in Cryptostegia grandiflora leaf extract were analyzed. The results confirmed that the extract contains the Myricetin 3582.22(mu g/g) and Rutin 45.62(mu g/g) as major components. C. grandiflora extract was evaluated for its anti-corrosion property on mild steel in 1 M H2SO4. A maximum inhibition efficiency of 87.54% was achieved by using 500 ppm of the inhibitor. Polarization studies indicate that the extract acts as a mixed inhibitor. The formation of productive layer on mild steel by inhibitor was confirmed by SEM-EDS and AFM. The extract is adsorbed on the mild steel according to Temkin adsorption isotherm. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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