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July 20, 2026Next MaterialsOpen Access

Carbon steel inhibition in 1.0 M HCl by using Walnut Green Husk (Juglans regia) extract: Practical and theoretical studies

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Authors

RARaghad Mowafak Al-MokhtarWEWafa K. EssaNINajlaa K. Issa

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Overview

Randomized trial demonstrates high inhibition efficiency in carbon steel, suggesting a green alternative for corrosion prevention.

Key Points

  • This research aims to evaluate the effectiveness of Walnut Green Husk extract as a corrosion inhibitor for carbon steel in hydrochloric acid solutions.
  • Combines experimental and theoretical analyses to assess inhibition efficiency at varying concentrations (0–25 g L−1) and temperatures (298–318 K) over immersion times (3–12 h).
  • Corrosion rates were measured under both inhibited and uninhibited conditions, with evaluations fitting the Langmuir adsorption model.
  • Inhibition efficiency peaked at 95.49% at 25 g L−1 after 12 hours, confirming high effectiveness.
  • Corrosion rate increased with temperature, correlating with a decrease in inhibition efficiency, indicating physisorption control.
  • Thermodynamic analysis showed spontaneous adsorption with ΔG° ads values between −14.90 to −16.85 kJ mol −1.

Cite This Study

Al-Mokhtar et al. (2026) studied this question.

synapsesocial.com/papers/6a5dba128bd453d3397ab627https://doi.org/10.1016/j.nxmate.2026.102808
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