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Bio-nanocoatings based on castor oil enhanced with nanomaterials as corrosion reducers in injection wells pipelines

  • 0Grupo de Investigación Fenómenos de Superficie-Michael Polanyi, Facultad de Minas, Universidad Nacional de Colombia Sede Medellín Kra 80 No. 65-223 Colombia caafrancoar@unal.edu.co fbcortes@unal.edu.co.
Nanoscale Advances +

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August 18, 2025

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August 18, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

This study developed a sustainable castor oil-based coating with nanoparticles to prevent pipeline corrosion in the oil and gas industry. Carbon quantum dots (CQDs) achieved 99.9% corrosion inhibition, offering a promising eco-friendly solution.

Area Of Science

  • Materials Science and Engineering
  • Corrosion Science
  • Nanotechnology

Background

  • Corrosion poses a significant challenge in oil and gas industries, leading to high maintenance costs.
  • Existing anticorrosive coatings often rely on non-renewable resources.
  • Development of sustainable and effective corrosion inhibitors is crucial for infrastructure longevity.

Purpose Of The Study

  • To evaluate an innovative alkyd-urethane coating derived from castor oil, enhanced with alumina (Al2O3), carbon quantum dots (CQDs), and silica (SiO2) nanoparticles.
  • To assess the efficacy of these nanomaterials as corrosion reducers for injection-well pipelines.
  • To explore the potential of bio-based resins and nanoparticles for sustainable anticorrosive applications.

Main Methods

  • Potentiodynamic polarization (ASTM 59-97) tests were conducted with and without CO2 exposure.
  • Electrochemical impedance spectroscopy (EIS) and salt spray tests evaluated long-term corrosion resistance.
  • Rheological properties were analyzed using steady and dynamic rheology, and microstructure was examined via scanning electron microscopy (SEM).

Main Results

  • Nanoparticle incorporation increased corrosion potential and reduced corrosion rates.
  • The coating with 100 mg/L CQDs demonstrated superior performance, achieving 99.9% corrosion inhibition efficiency.
  • Alumina (Al2O3) enhanced long-term corrosion resistance against salt spray and EIS tests, while SEM confirmed nanoparticle integration and structural modification.

Conclusions

  • Nanomaterial-enhanced castor oil-based coatings offer a sustainable and effective alternative for inhibiting corrosion in injection wells.
  • The study highlights the potential of CQDs and Al2O3 nanoparticles in significantly improving anticorrosive properties.
  • These findings support the advancement of eco-friendly coatings with broad industrial applications beyond the oil and gas sector.