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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Akta Kimia Indonesia Molekul: Jurnal Ilmiah Kimia Hydrogen: Jurnal Kependidikan Kimia Molekul: Jurnal Ilmiah Kimia
Suryati Suryati
Department Of Chemistry Faculty Of Mathematics And Natural Sciences Universitas Andalas, Kampus Limau Manis, Padang 25163, West Sumatra, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology

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Journal : Hydrogen: Jurnal Kependidikan Kimia

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Synergetic Effect of Potassium Iodide and Miana (Coleus scutellaroides (L.) Benth.) Leaves Extract on Mild Steel in HCl Medium Sanaq Elfira Putri; Vira Anggita Gusniardi; Suryati Suryati; Emriadi Emriadi
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 6 (2023): December 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i6.9810

Abstract

Due to its low carbon content, mild steel is prone to corrosion. Therefore, corrosion inhibitors are needed to decrease the corrosive rate of mild steel. This research aims to investigate the influence of adding potassium iodide to miana leaves extract (Coleus scutellaroides (L.) Benth.) (MLE) on the corrosion rate of mild steel, identify the type of adsorption, synergistic effects and characterize the surface of mild steel both before and after the addition of potassium iodide. The weight loss method is employed to test the corrosion rate, and the type of adsorption is identified through thermodynamic calculations. Surface characterization is evaluated using Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM). As potassium iodide is added, the weight loss findings show an increase in inhibitory efficiency. When potassium iodide concentration was 0.4 g/L and temperature was 30°C, the maximum inhibitory efficiency was attained, which was 92.784%. Characterization analysis indicates the interaction between potassium iodide and MLE with the surface of mild steel. This research has not been explored yet and is expected to provide information on the use of potassium iodide and MLE as environmentally friendly corrosion inhibitors.
Co-Authors Adlis Santoni Asri Amelia Bustanul Arifin Elida Mardiah Emriadi - Indah Putri Lestari Kartika MZ Leidina Zein Mai Efdi Norman Ferdinal Rini Ramadani Salim, Emil Sanaq Elfira Putri Silfani Mairanti Vira Anggita Gusniardi Wini Sukrila Yayan Rabbani Kurniawan Yuni Malasari