Scholarlink

<p>The inhibitory effect of lavender essential oil (LV) on the corrosion of carbon steel in a 1 M HCl solution at 298 K was evaluated using electrochemical and theoretical approaches. Potentiodynamic polarization measurements showed that LV acts as a mixed inhibitor, reaching a maximum efficiency of 92.49% at 5 mL/L, confirmed by electrochemical impedance spectroscopy (89.70%). Adsorption follows the Langmuir isotherm with ΔGºads = –23.64 kJ mol⁻<sup>1</sup>, reflecting spontaneous mixed physicochemical adsorption. DFT calculations revealed that the three main phytochemical constituents (camphor, 1,8-cineole, and camphene) have similar electronic properties that favor electron transfer to Fe. Monte Carlo and molecular dynamics simulations confirmed negative adsorption energies (up to –97 kcal mol⁻<sup>1</sup>) and the formation of chemical bonds with Fe (110). Thus, LV appears to be an effective and environmentally friendly corrosion inhibitor for carbon steel in acidic environments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electrochemical and Theoretical Study of the Inhibition of Carbon Steel Corrosion by Lavender Essential Oil in 1M Hydrochloric Acid

  • 期刊论文

  • 发表日期：

    2025年10月15日

查看全文
  • Redouane El Adnani,
  • Mohamed Ennabely,
  • Aziz Aynaou,
  • Youness Benaarif,
  • Boubaker Youbi,
  • Youssef Lghazi,
  • Itto Bimaghra

摘要

The inhibitory effect of lavender essential oil (LV) on the corrosion of carbon steel in a 1 M HCl solution at 298 K was evaluated using electrochemical and theoretical approaches. Potentiodynamic polarization measurements showed that LV acts as a mixed inhibitor, reaching a maximum efficiency of 92.49% at 5 mL/L, confirmed by electrochemical impedance spectroscopy (89.70%). Adsorption follows the Langmuir isotherm with ΔGºads = –23.64 kJ mol⁻1, reflecting spontaneous mixed physicochemical adsorption. DFT calculations revealed that the three main phytochemical constituents (camphor, 1,8-cineole, and camphene) have similar electronic properties that favor electron transfer to Fe. Monte Carlo and molecular dynamics simulations confirmed negative adsorption energies (up to –97 kcal mol⁻1) and the formation of chemical bonds with Fe (110). Thus, LV appears to be an effective and environmentally friendly corrosion inhibitor for carbon steel in acidic environments.