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Analytical and Bioanalytical Electrochemistry، جلد ۱۲، شماره ۷، صفحات ۹۷۰-۹۸۸
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عنوان انگلیسی Berberis Aristata: A Highly Efficient and Thermally Stable Green Corrosion Inhibitor for Mild Steel in Acidic Medium
چکیده انگلیسی مقاله Plant extracts are extensively researched as a source of green corrosion inhibitors. Herein, we report on a highly efficient and thermally stable corrosion inhibitor from the stem extract of high-altitude shrub Berberis aristata. The corrosion inhibition efficiency (IE) of the extract was tested in 1.0 M H2SO4 for the corrosion protection of mild steel (MS) by using gravimetric and electrochemical measurements. It displayed a remarkable IE of 90% at 200 ppm and reached to 98.18% at high concentration (1000 ppm) at room temperature. The thermal stability of the adsorbed extract was uncommon among the recently reported plant extracts, giving an IE of 80% at 338K. Besides, the adsorption of the extract was extremely efficient, producing an IE of 90% in 15 min. The thermodynamic parameters (ΔG and Ea) showed a chemisorption dominated behavior of the extract. Electrochemical measurements indicated a mixed type of inhibitor, and the extract suppressed the corrosion rate by blocking the active surface of the MS.
کلیدواژه‌های انگلیسی مقاله Corrosion inhibitor,Berberis aristata,Weight loss,Potentiodynamic polarization,electrochemical impedance spectroscopy
نویسندگان مقاله Nabin Karki |
Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

Shova Neupane |
Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

Yogesh Chaudhary |
Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

Dipak Kumar Gupta |
Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

Amar Prasad Yadav |
Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

نشانی اینترنتی https://www.abechem.com/article_43505_90cfa14044043e45776c41be9ee40a74.pdf
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