Enhanced corrosion inhibition effect of chitosan for St37 in 15% H2SO4 environment by silver nanoparticles

Moses M. Solomon, Husnu Gerengi, Tugce Kaya, Saviour A. Umoren

Research output: Journal PublicationArticlepeer-review

80 Citations (Scopus)

Abstract

The inhibitive performance of chitosan and silver nanoparticles – chitosan (AgNPs-Chi) composite towards St37 steel corrosion in 15% H2SO4 solution was studied using weight loss and electrochemical techniques in addition to surface morphological examination. Results obtained show that chitosan could fairly protect St37 steel surface by 45%. Inhibition efficiency above 94% has been achieved with AgNPs-Chi composite. AgNPs-Chi composite performs better at longer immersion time and elevated temperature. AgNPs-Chi retards both anodic and cathodic redox reactions. The mode of adsorption of AgNPs-Chi onto St37 surface has been described using Langmuir adsorption isotherm. Surface screening results ascertain the adsorption of AgNPs-Chi molecules on St37 surface.

Original languageEnglish
Pages (from-to)638-649
Number of pages12
JournalInternational Journal of Biological Macromolecules
Volume104
DOIs
Publication statusPublished - Nov 2017
Externally publishedYes

Keywords

  • Acid solution
  • Chitosan
  • Inhibition
  • Inhibition improvement
  • Silver nanoparticles
  • St37 corrosion

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Economics and Econometrics
  • General Energy

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