Evaluation of Ginkgo leaf extract as an eco-friendly corrosion inhibitor of X70 steel in HCl solution
| Autor: | Bochuan Tan, Shijin Chen, Shengtao Zhang, Yujie Qiang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Quantum chemical
Materials science General Chemical Engineering fungi technology industry and agriculture Langmuir adsorption model Ginkgo leaf extract 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Environmentally friendly 0104 chemical sciences Corrosion symbols.namesake Corrosion inhibitor chemistry.chemical_compound Adsorption chemistry symbols General Materials Science 0210 nano-technology Nuclear chemistry |
| Zdroj: | Corrosion Science. 133:6-16 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2018.01.008 |
| Popis: | The corrosion inhibition of X70 steel in 1 M HCl by Ginkgo leaf extract (GLE) was investigated by conducting electrochemical measurements. The inhibition efficiency exceeded 90% in the presence of 200 mg/L GLE at all of the tested temperatures. The excellent inhibition capacity, which was attributed to the formation of inhibitor–adsorption films on the surface of the X70 steel, was confirmed by field emission scanning electron microscopy and atomic force microscopy. The adsorption of GLE on steel surface followed the Langmuir adsorption model. Potential of zero charge measurement and quantum chemical calculation were adopted to elucidate the inhibition mechanism. |
| Databáze: | OpenAIRE |
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