Asidik Çözeltide Yumuşak Çelik için Çevresel Olarak Sürdürülebilir Yeni Bir Yeşil Korozyon İnhibitörü Olarak Plagiochila porelloides (Marchantiophyta)’e Genel Bir Bakış

Bir Marchantiophyta türü olan Plagiochila porelloides (Torr. ex Nees) Lindenb. ekstraktının 298 K’de hidroklorik asit çözeltisindeki yumuşak çeliğin korozyonu üzerine inhibisyon etkisi, ilk kez bu çalışmada elektrokimyasal impedans spektroskopisi (EIS), lineer polarizasyon (LPR) ve potansiyodinamik polarizasyon yöntemleri uygulanarak araştırılmıştır. Deneyler, her elektrokimyasal ölçümden önce yumuşak çelik elektrotların agresif çözelti ile dengeye gelmesi için 1 saat boyunca farklı konsantrasyonlarda Plagiochila porelloides özütü içeren asidik çözeltilere daldırılmasıyla gerçekleştirilmiştir. Ciğerotu özütü 1 saatlik elektrokimyasal deneyler sonucunda, güçlü bir inhibitör etki göstererek özüt derişimi arttıkça, asidik çözeltilerdeki yumuşak çeliği koruma etkisi artmıştır. Ayrıca, 1 saatlik daldırma süresi sonrasında inhibitörlü ve inhibitörsüz 1,0 M HCl çözeltilerine daldırılan elektrotların yüzey morfolojileri optik mikroskopta incelenmiş ve inhibitörlü çözeltideki metal yüzeyinin inhibitörsüz olan metal yüzeyine göre daha düzgün bir görüntüye sahip olduğu gösterilmiştir. Elektrokimyasal bulgular ve yüzey görüntüleri birbirini destekler niteliktedir.

Anahtar Kelimeler:

Marchantiophyta, Plagiochila porelloides, Yeşil inhibitör, EIS, Optik mikroskop

An Overview of Plagiochila porelloides (Marchantiophyta) as a New Environmentally Sustainable Green Corrosion Inhibitor for Mild Steel in Acidic Solution

In this study, the corrosion inhibition effect of Plagiochila porelloides (Torr. ex Nees) Lindenb. extract, a Marchantiophyta species, on mild steel in hydrochloric acid solution at 298 K was investigated for the first time by applying electrochemical impedance spectroscopy (EIS), linear polarization (LPR) and potentiodynamic polarization techniques. Experiments were performed by immersing mild steel electrodes in acidic solutions containing different concentrations of Plagiochila porelloides extract for 1 hour before each electrochemical measurement to equilibrate with the aggressive solution. Liverwort extract showed a strong inhibitory effect as a result of 1 hour electrochemical experiments, and as the extract concentration increased, the protective effect of mild steel in acidic solutions raised. In addition, the surface images of the electrodes in 1.0 M HCl solutions with and without liverwort extract after 1-hour exposure were examined by an optical microscope and it was shown that the metal surface in the inhibited extract solution had a smoother appearance compared to the uninhibited metal surface. Electrochemical findings and surface images support each other.

Keywords:

Marchantiophyta, Plagiochila porelloides, Green inhibitor, EIS, Optical microscope,

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