Corrosion inhibition and mechanism of mild steel in hydrochloric acid by ceftriaxone and amoxicillin

doi:10.1007/s11426-011-4332-9

	Corrosion inhibition and mechanism of mild steel in hydrochloric acid by ceftriaxone and amoxicillin
	Pang XueHui 1,2; Gong Min 2; Zhang YuXuan 3; Wei Qin 3; Hou BaoRong 1; Pang, XH (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
	2011-09-01
发表期刊	SCIENCE CHINA-CHEMISTRY
ISSN	1674-7291
卷号	54 期号:9 页码:1529-1536
文章类型	Article
摘要	Corrosion inhibition of mild steel in 1 mol/L HCl by amoxicillin and ceftriaxone in the concentration range of 1.00x10(-5)-1.00x10(-2) mol/L has been studied using weight loss, electrochemical potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and quantum chemistry tests at 298 K. The weight loss experiment showed that the inhibition efficiency increased with amoxicillin and ceftriaxone concentrations to attain the maximums of 80.3% and 94.1%, respectively at 1.00x10(-2) mol/L. Potentiodynamic polarization indicated that amoxicillin and ceftriaxone acted as mixed-type inhibitors but mainly inhibited cathode hydrogen evolution reaction for mild steel in 1 mol/L HCl. The electrochemical impedance spectroscopy (EIS) demonstrated the inhibitors covered the active points of metal surface to inhibit corrosion. The absorption of both inhibitors on the mild steel surface was found to follow Langmuir adsorption isothermal and dominantly involve chemical adsorption at 298 K. Scanning electron microscopy (SEM) confirmed both of the inhibitors played a significant protective effect in mild steel corrosion in 1 mol/L HCl. The relationship between the inhibition properties and molecular structure had been discussed by quantum chemistry calculation. All the experimental results concluded that both amoxicillin and ceftriaxone acted as good corrosion inhibitors and their inhibition efficiency was in the order of ceftriaxone > amoxicillin.; Corrosion inhibition of mild steel in 1 mol/L HCl by amoxicillin and ceftriaxone in the concentration range of 1.00x10(-5)-1.00x10(-2) mol/L has been studied using weight loss, electrochemical potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and quantum chemistry tests at 298 K. The weight loss experiment showed that the inhibition efficiency increased with amoxicillin and ceftriaxone concentrations to attain the maximums of 80.3% and 94.1%, respectively at 1.00x10(-2) mol/L. Potentiodynamic polarization indicated that amoxicillin and ceftriaxone acted as mixed-type inhibitors but mainly inhibited cathode hydrogen evolution reaction for mild steel in 1 mol/L HCl. The electrochemical impedance spectroscopy (EIS) demonstrated the inhibitors covered the active points of metal surface to inhibit corrosion. The absorption of both inhibitors on the mild steel surface was found to follow Langmuir adsorption isothermal and dominantly involve chemical adsorption at 298 K. Scanning electron microscopy (SEM) confirmed both of the inhibitors played a significant protective effect in mild steel corrosion in 1 mol/L HCl. The relationship between the inhibition properties and molecular structure had been discussed by quantum chemistry calculation. All the experimental results concluded that both amoxicillin and ceftriaxone acted as good corrosion inhibitors and their inhibition efficiency was in the order of ceftriaxone > amoxicillin.
关键词	Corrosion Mild Steel Acid Weight Loss Potentiodynamic Polarization Curve Eis Sem Quantum Chemistry
学科领域	Chemistry
DOI	10.1007/s11426-011-4332-9
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000294347700021
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/11431
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Pang, XH (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Sichuan Univ Sci & Engn, Coll Mat & Chem Engn, Zigong 643000, Peoples R China 3.Univ Jinan, Sch Chem & Engn, Jinan 250022, 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	Pang XueHui,Gong Min,Zhang YuXuan,et al. Corrosion inhibition and mechanism of mild steel in hydrochloric acid by ceftriaxone and amoxicillin[J]. SCIENCE CHINA-CHEMISTRY,2011,54(9):1529-1536.
APA	Pang XueHui,Gong Min,Zhang YuXuan,Wei Qin,Hou BaoRong,&Pang, XH .(2011).Corrosion inhibition and mechanism of mild steel in hydrochloric acid by ceftriaxone and amoxicillin.SCIENCE CHINA-CHEMISTRY,54(9),1529-1536.
MLA	Pang XueHui,et al."Corrosion inhibition and mechanism of mild steel in hydrochloric acid by ceftriaxone and amoxicillin".SCIENCE CHINA-CHEMISTRY 54.9(2011):1529-1536.

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