Year 2020, Volume 6 , Issue 2, Pages 119 - 128 2020-11-15

Uzun Süreli İmpedans Testleri ile Asidik Çözeltideki Yumuşak Çeliğin Korozyonuna Yeni Bir İnhibitör Yaklaşımı: Hypnum cupressiforme (Bryophyta) için Yeni Bir Uygulama Alanı
A New Inhibitor Approach to the Corrosion of Mild Steel in Acidic Solution with Long-Term Impedance Tests: A New Application Area for Hypnum cupressiforme (Bryophyta)

Demet ÖZKIR [1] , Tülay EZER [2]


Bu çalışmanın en önemli yönü, 298 K’de 1,0 M HCl çözeltisindeki yumuşak çeliğin korozyon davranışına, bir briyofit türü olan Hypnum cupressiforme Hedw.’nin “yeşil inhibitor” olarak etkisinin ilk kez inceleniyor olmasıdır. Karayosunu ekstraktının inhibitör etkisi, elektrokimyasal impedans spektroskopisi (EIS) tekniği uygulanarak araştırılmıştır. Ekstrakt’ın farklı derişimlerinin bazı zaman parametreleriyle değişimini incelemek amacıyla, EIS ile Nyquist diyagramları oluşturulmuştur. Ayrıca, EIS tekniği ile metalin inhibisyon mekanizması açısından yüzey yükü belirlenmiş ve bunun sonucunda, protonlanmış inhibitör moleküllerinin doğrudan metal yüzeyine adsorplandığı bulunmuştur. Çalışma elektrotlarının yüzey morfoloji incelemeleri alan emisyonlu taramalı elektron mikroskobu (FESEM) ve optik metal mikroskobu teknikleri kullanılarak gerçekleştirilmiştir. Elektrokimyasal deneylerle, yüzey analizi çalışmaları birbirini destekler niteliktedir.
The most important aspect of this study is that the effect of Hypnum cupressiforme Hedw. which is a bryophyte species as a “green inhibitor” on the corrosion behavior of mild steel in 1.0 M HCl solution at 298 K is being examined for the first time. The inhibitory effect of moss extract was investigated applying electrochemical impedance spectroscopy (EIS) technique. Nyquist diagrams were performed by EIS to examine the variation of the different concentrations of the extract with some immersion-time parameters. In addition, the surface charge of the metal in terms of the inhibition mechanism was determined by the EIS technique and as a result, it was found that the protonated inhibitor molecules were adsorbed directly onto the metal surface. The surface morphology studies of working electrodes was performed using field emission scanning electron microscope (FESEM) and optical metal microscopy techniques. Electrochemical tests and surface analysis studies support each other.
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Primary Language en
Subjects Science
Published Date Güz
Journal Section Research Articles
Authors

Orcid: 0000-0002-8096-5755
Author: Demet ÖZKIR (Primary Author)
Institution: NIGDE OMER HALISDEMIR UNIVERSITY
Country: Turkey


Orcid: 0000-0002-6485-5505
Author: Tülay EZER
Institution: NIGDE OMER HALISDEMIR UNIVERSITY
Country: Turkey


Dates

Publication Date : November 15, 2020

APA Özkır, D , Ezer, T . (2020). A New Inhibitor Approach to the Corrosion of Mild Steel in Acidic Solution with Long-Term Impedance Tests: A New Application Area for Hypnum cupressiforme (Bryophyta) . Anatolian Bryology , 6 (2) , 119-128 . DOI: 10.26672/anatolianbryology.767714