https://doi.org/10.1140/epjp/s13360-026-07833-z
Regular Article
From molecular design to metal protection: benzo[g]chromene organic nanoparticles as green corrosion inhibitors
1
Bahra Research Innovation & Knowledge Cluster, Rayat Bahra University, Chandigarh-Ropar NH 205, Greater Mohali, 140103, Punjab, India
2
Department of Applied Sciences, Division of Chemistry, Chandigarh University, Mohali, India
3
Department of Physics, Chandigarh University, Gharuan, Mohali, Punjab, India
4
Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, Saudi Arabia
5
Department of Teaching and Learning, College of Education and Human Development, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
6
Department of Chemistry, College of Science, University of Ha’il, 81451, Ha’il, Saudi Arabia
7
Department of VLSI Microelectronics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, 602105, Chennai, Tamil Nadu, India
8
Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Nasiriyah, Thi-Qar, Iraq
9
Department of Applied Science, School of Engineering and Technology, CGC University, Mohali, India
10
Department of Chemistry, Graphic Era (Deemed to be) University, 248002, Dehradun, Uttarakhand, India
a
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b
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Received:
19
January
2026
Accepted:
15
May
2026
Published online:
2
June
2026
Abstract
In this research, organic nanoparticles (ONP) of benzo[g]chromene derivative were synthesized and characterized by UV–Visible spectroscopy, powder X-ray diffraction, FTIR, and high-resolution transmission electron microscopy. The corrosion inhibition performance of this derivative was evaluated via weight loss (WL), potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS). PDP results indicated a mixed-type inhibition behavior with a notable decrease in corrosion current density (Icorr) from 7.3 × 10⁻4 to 8.0 × 10⁻5 A/cm2, achieving 89.04% efficiency at 0.5 mM/L. EIS results further supported this, showing a substantial increase in polarization resistance (Rp) from 28.02 to 190.03 Ωcm2 indicating the origination of adsorbed layer on the steel surface. The enhanced inhibition performance is attributed to the nanoscale characteristics of the inhibitor, which increase the adsorption of the derivative and also rise in the surface coverage. Overall, the synthesized benzo[g]chromene ONPs demonstrate excellent inhibition efficiency and potential as sustainable corrosion inhibitors for mild steel in the harsh medium.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
