Corrosion inhibition by leaves and stem extracts of Sida acuta for mild steel in 1 M H2SO4 solutions investigated by chemical and spectroscopic techniques

S. A. Umoren, U. M. Eduok, M. M. Solomon, A. P. Udoh

Research output: Journal PublicationArticlepeer-review

182 Citations (Scopus)

Abstract

Corrosion inhibition of mild steel in 1 M H2SO4 by leaves and stem extracts of Sida acuta was studied using chemical (weight loss and hydrogen evolution) and spectroscopic (AAS, FTIR and UV-V) techniques at 30–60 °C. It was found that the leaves and stem extracts of S. acuta inhibited the acid induced corrosion of mild steel. The inhibition efficiency increases with increase in concentration of the extracts but decrease with rise in temperature. Inhibitive effect was afforded by adsorption of the extracts’ components which was approximated by Freundlich adsorption isotherm. Inhibition mechanism is deduced from the temperature dependence of the inhibition efficiency and also from spectroscopic results.

Original languageEnglish
Pages (from-to)S209-S224
JournalArabian Journal of Chemistry
Volume9
DOIs
Publication statusPublished - 1 Sept 2016
Externally publishedYes

Keywords

  • Acid
  • Corrosion inhibition
  • Mild steel
  • Sida acuta

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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