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All Journal CHEMPUBLISH JOURNAL
Sanaq Elfira Putri
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Padang 25163, West Sumatra, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Inhibitor Korosi dari Ekstrak Daun Sambang Darah (Excoecaria cochinchinensis L.) pada Baja Lunak Dalam HCl: indonesia Vira Anggita Gusniardi; Sanaq Elfira Putri; Suryati Suryati; Emriadi Emriadi
Chempublish Journal Vol. 7 No. 2 (2023): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v7i2.29254

Abstract

Corrosion inhibition studies in mild steels in HCl medium by extracts of sambang darah leaves (Excoecaria cochinensis L.) (EDSD) have been conducted using weight loss methods, Fourier-Transform Infrared Spectroscopy (FTIR), contact angle and Scanning Electron Microscopy (SEM). The study is aimed at determining the effectiveness of EDSD inhibition as a corrosion inhibitor in HCl medium. The inhibition efficiency was found to increase with increasing concentration of EDSD and decrease with increasing temperature. The results showed that EDSD was capable of inhibiting mild steel corrosion with an inhibitory efficiency of 87.972% at EDSD 6 g/L in 1 M HCl solution. EDSD adsorption on mild steel surfaces follows Langmuir's isoterm adsorption. The FTIR analysis showed interaction between the EDSD and the surface of the mild steel. The contact angle analysis indicated that the mild steel surface is hydrophobic with the presence of the EDSD. SEM analysis shows a change in the surface of mild steel immersed in a 1 M HCl medium without and with the addition of EDSD.
Co-Authors Emriadi - Suryati Suryati Vira Anggita Gusniardi