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Effect of Helichrysum italicum on the Electrochemical Corrosion Behaviour of Iron in Simulated Acid Rain Solution


(Pilić, Zora; Martinović, Ivana; Pavlinović, Marija; Zlatić, Gloria)
Effect of Helichrysum italicum on the Electrochemical Corrosion Behaviour of Iron in Simulated Acid Rain Solution // Croatica chemica acta, 92 (2019), 1; 3451, 7 doi:10.5562/cca3451 (međunarodna recenzija, članak, znanstveni)


Naslov
Effect of Helichrysum italicum on the Electrochemical Corrosion Behaviour of Iron in Simulated Acid Rain Solution

Autori
(Pilić, Zora ; Martinović, Ivana ; Pavlinović, Marija ; Zlatić, Gloria)

Izvornik
Croatica chemica acta (0011-1643) 92 (2019), 1; 3451, 7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Iron ; simulated acid rain ; corrosion ; Helichrysum italicum ; electrochemical methods

Sažetak
The aqueous extract of the Helichrysum italicum leaves (HI) is tested as a corrosion inhibitor of an iron in a simulated acid rain using potentiodynamic polarisation, cyclic voltammetry and electrochemical impedance spectroscopy. Results of all electrochemical methods indicate an increase of a corrosion inhibition efficiency of the iron with the HI extract concentration. Maximum inhibition efficiency (~ 50 %) is obtained at 2.0 g L–1 HI extract. The inhibitive action is assumed to occur via an adsorption of the HI extract on the iron surface. Results indicate that the adsorption process is spontaneous and follows the Freundlich adsorption isotherm. According to the calculated ΔG value (~ 15 kJ mol–1), the corrosion inhibition of the iron occurs predominantly via a physisorption of the HI extract. The concentration of iron ions released into a solution, measured by atomic absorption spectrometry, is in accordance with the electrochemical results.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Autor s matičnim brojem:
Zora Pilić, (225331)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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