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Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium | |
Li, Wei-hua1; He, Qiao2; Zhang, Sheng-tao2; Pei, Chang-ling3; Hou, Bao-rong1 | |
2008-03-01 | |
发表期刊 | JOURNAL OF APPLIED ELECTROCHEMISTRY |
ISSN | 0021-891X |
卷号 | 38期号:3页码:289-295 |
文章类型 | Article |
摘要 | Two triazole derivatives, 3,4-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (4-DTM) and 2,5-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (5-DTM) were synthesized, and the inhibition effects for mild steel in 1 M HCl solutions were investigated by weight loss measurements, electrochemical tests and scanning electronic microscopy (SEM). The weight loss measurements showed that these compounds have excellent inhibiting effect at a concentration of 1.0 x 10(-3) M. The potentiodynamic polarization experiment revealed that the triazole derivatives are inhibitors of mixed-type and electrochemical impedance spectroscopy (EIS) confirmed that changes in the impedance parameters (R-ct and C-dl) are due to surface adsorption. The inhibition efficiencies obtained from weight loss measurements and electrochemical tests were in good agreement. Adsorption followed the Langmuir isotherm with negative values of the free energy of adsorption Delta G(ads)(o). The thermodynamic parameters of adsorption were determined and are discussed. Results show that both 4-DTM and 5-DTM are good inhibitors for mild steel in acid media.; Two triazole derivatives, 3,4-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (4-DTM) and 2,5-dichloro-acetophenone-O-1'-(1',3',4'-triazolyl)-methaneoxime (5-DTM) were synthesized, and the inhibition effects for mild steel in 1 M HCl solutions were investigated by weight loss measurements, electrochemical tests and scanning electronic microscopy (SEM). The weight loss measurements showed that these compounds have excellent inhibiting effect at a concentration of 1.0 x 10(-3) M. The potentiodynamic polarization experiment revealed that the triazole derivatives are inhibitors of mixed-type and electrochemical impedance spectroscopy (EIS) confirmed that changes in the impedance parameters (R-ct and C-dl) are due to surface adsorption. The inhibition efficiencies obtained from weight loss measurements and electrochemical tests were in good agreement. Adsorption followed the Langmuir isotherm with negative values of the free energy of adsorption Delta G(ads)(o). The thermodynamic parameters of adsorption were determined and are discussed. Results show that both 4-DTM and 5-DTM are good inhibitors for mild steel in acid media. |
关键词 | Triazole Derivative Acid Inhibitor Potentiodynamic Polarization Eis Langmuir Adsorption Isotherm |
学科领域 | Electrochemistry |
DOI | 10.1007/s10800-007-9437-7 |
URL | 查看原文 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000254089600003 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/5170 |
专题 | 海洋环境腐蚀与生物污损重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China 3.Qingdao Technol Univ, Sch Civil Engn, Qingdao 266033, Peoples R China |
第一作者单位 | 中国科学院海洋研究所 |
推荐引用方式 GB/T 7714 | Li, Wei-hua,He, Qiao,Zhang, Sheng-tao,et al. Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY,2008,38(3):289-295. |
APA | Li, Wei-hua,He, Qiao,Zhang, Sheng-tao,Pei, Chang-ling,&Hou, Bao-rong.(2008).Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium.JOURNAL OF APPLIED ELECTROCHEMISTRY,38(3),289-295. |
MLA | Li, Wei-hua,et al."Some new triazole derivatives as inhibitors for mild steel corrosion in acidic medium".JOURNAL OF APPLIED ELECTROCHEMISTRY 38.3(2008):289-295. |
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