Diaminoalkanes functionalized graphene oxide as corrosion inhibitors against carbon steel corrosion in simulated oil/gas well acidizing environment

石墨烯 腐蚀 氧化物 吸附 材料科学 石墨 碳钢 电化学 傅里叶变换红外光谱 化学工程 朗缪尔吸附模型 氧化石墨 拉曼光谱 无机化学 冶金 化学 有机化学 纳米技术 物理化学 工程类 物理 光学 电极
作者
Tawfik A. Saleh,Kabiru Haruna,Bader Alharbi
出处
期刊:Journal of Colloid and Interface Science [Elsevier BV]
卷期号:630: 591-610 被引量:47
标识
DOI:10.1016/j.jcis.2022.10.054
摘要

Experimental weight loss and electrochemical measurements were used at ambient and high temperatures to evaluate the corrosion inhibition efficacies of diaminodecane functionalized graphene oxide (DAD-GO) and diaminododecane functionalized graphene oxide (DADD-GO) against carbon steel corrosion in 15.0 % HCl, mimicking an acidizing environment in an oil/gas well. The GO was made from waste graphite and then grafted with the diaminoalkanes (DAD & DADD). The GO and functionalized GOs were described using FTIR, Raman, TEM, and TGA. Concentration and temperature effects on the inhibitors' performance were also looked into. The inhibition efficiency increased with concentration at room temperature, reaching a maximum of 84 % for DAD-GO and 78 % for DADD-GO at a concentration of 5 ppm for both. At the temperatures studied, the inhibitors performed well at extremely low concentrations; however, as the temperature rises, the inhibitor's performance decreases. According to the PDP measurement, the inhibitors function primarily as mixed-type inhibitors. The Langmuir adsorption theory was found to be followed by the studied compound. AFM, SEM, EDX, and FTIR characterization of the steel surfaces revealed that the functionalized GOs molecules adsorbed on the steel to create a protective layer that insulated the steel from aggressive acid assault after the immersion time (24 h) in the inhibited solutions. DFT calculations were utilized to determine the relative stability of functionalized GOs to GO and to learn more about the inhibitor molecules' interactions with the steel surface. The DFT calculations corroborated the experimental findings. This study is important in tackling two significant environmental concerns: corrosion and waste management because GO is manufactured from waste graphite.
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