A novel corrosion inhibitor for copper in sulfuric acid media: Complexation of iodide ions with Benincasa Hispida leaf extract

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2024-11-05 DOI:10.1016/j.colsurfa.2024.135710

Bochuan Tan , Haiqin Ren , Ruilai Zhang , Rong Wang , Lingwei Ma , Xin Li , Wenpo Li , Lei Guo , Mohammad K. Al-Sadoon

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Abstract

In the context of green and low-carbon development, the rapid development of industry brings the problem of metal corrosion costs increase, metal corrosion protection methods are of great concern. Extracts from Benincasa hispida leaves (BHLE), which were obtained through pressurised liquid extraction, were employed as a inhibitor for copper corrosion in 0.5 M H₂SO₄. Their composition and anti-corrosion properties were subsequently analyzed and evaluated. The electrochemical analysis results indicated that BHLE functions as a cathodic-type corrosion inhibitor. The anti-corrosion performance intensifies with the increase in concentration but diminishes gradually as the temperature rises, when the concentration of BHLE is 400 mg/L, the corrosion inhibition efficiency can reach 91.82 %, when the concentration of added potassium iodide reaches 16 mg/L the slow-release efficiency of the compounded corrosion inhibitor reaches 96.92 %. The addition of I⁻ strengthens the inhibition efficiency through the adsorption form dominated by competitive adsorption. The adsorption of BHLE onto the surface of copper follows the Langmuir monolayer adsorption model.

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硫酸介质中铜的新型缓蚀剂：碘离子与贝南卡叶提取物的络合反应

在绿色低碳发展的背景下，工业的快速发展带来了金属腐蚀成本增加的问题，金属腐蚀防护方法备受关注。通过加压液体萃取法获得的贝南卡糙叶提取物（BHLE）被用作铜在 0.5 M H2SO4 中的缓蚀剂。随后对其成分和抗腐蚀性能进行了分析和评估。电化学分析结果表明，BHLE 是一种阴极型缓蚀剂。当 BHLE 的浓度为 400 mg/L 时，缓蚀效率可达 91.82%；当碘化钾的添加浓度达到 16 mg/L 时，复合缓蚀剂的缓释效率可达 96.92%。碘化钾的加入通过竞争吸附为主的吸附形式提高了缓释效率。BHLE 在铜表面的吸附遵循 Langmuir 单层吸附模型。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.