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

doi:10.1007/s11426-011-4332-9

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	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
刊名	SCIENCE CHINA-CHEMISTRY
	2011-09-01
卷号	54 期号:9 页码:1529-1536
关键词	Corrosion Mild Steel Acid Weight Loss Potentiodynamic Polarization Curve Eis Sem Quantum Chemistry
ISSN号	1674-7291
DOI	10.1007/s11426-011-4332-9
文献子类	Article
英文摘要	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.
学科主题	Chemistry
URL标识	查看原文
语种	英语
WOS记录号	WOS:000294347700021
公开日期	2012-07-03
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/11432]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
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
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.