Study on adsorption behavior of ketoconazole on Q235 mild steel in 1.0M HCl solution with electrochemical measurement

被引：25
作者：
Liu, Y. W. [1 ]
Chen, Y. [1 ,2 ]
Chen, X. H. [2 ]
Yang, Z. N. [1 ]
Xie, Y. [1 ]
Zhang, Z. [2 ]
机构：
[1] Binzhou Univ, Dept Chem Engn & Safety, Binzhou 256600, Shandong, Peoples R China
[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 758卷
基金：
中国国家自然科学基金;
关键词：
Adsorption; Ketoconazole; Electrochemical noise; HYDROCHLORIC-ACID SOLUTION; EFFECTIVE CORROSION-INHIBITORS; CARBON-STEEL; SCHIFF-BASE; BENZIMIDAZOLE DERIVATIVES; CATHODIC PROTECTION; NOISE; ALUMINUM; MEDIA; TRANSFORM;
D O I：
10.1016/j.jallcom.2018.05.107
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The inhibition effect of ketoconazole (KCZ) on Q235 mild steel corrosion in 1.0 M HCl solution was studied using weight loss, electrochemical impedance spectroscopy (EIS), electrochemical noise (EN), scanning electron microscope (SEM) and energy dispersive X-ray detector (EDX). Results reveal that the inhibition efficiency increases with increasing the KCZ inhibitor concentration and the adsorption behavior of ketoconazole onto Q235 mild steel follows the Langmuir adsorption isotherm with negative value of Delta G(ads)(0), suggesting a spontaneous adsorption process. It is also found that the type of adsorption of KCZ on the mild steel surface belongs to chemisorption. New parameter of corrosion active energy C-AE proposed from EN measurements which representing the electrode reaction speed exhibited the same variation trend with the corrosion rate. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：184 / 193
页数：10
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