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Enhanced corrosion inhibition properties of carboxymethyl hydroxypropyl chitosan for mild steel in 1.0 M HCl solution
Wan, Kai1; Feng, Panpan1,2; Hou, Baorong1; Li, Yantao1
2016
Source PublicationRSC ADVANCES
Volume6Issue:81Pages:77515-77524
SubtypeArticle
AbstractSynthesized carboxymethyl hydroxypropyl chitosan (CHPCS) containing both carboxymethyl and hydroxypropyl groups was investigated as a corrosion inhibitor for mild steel in 1.0 M HCl solution using weight loss, open circuit potential (OCP), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. It was found that the compound behaved like a mixed-typed corrosion inhibitor that simultaneously inhibited the anodic dissolution and hydrogen evolution reactions. The compound inhibited corrosion at a low concentration and reached an inhibition efficiency of 95.3% in 1000 ppm (by weight). It was also found that the equivalent circuit model of one time constant was used during EIS analysis. The absorption of CHPCS on the metallic surface obeyed the Langmuir isotherm with a negative value of the free energy of adsorption Delta G. Scanning electron microscopy (SEM) was carried out to corroborate the test results. The potential of zero charge revealed that the corrosion inhibition mechanism involved physisorption and chemisorption processes.
DOI10.1039/c6ra12975g
Indexed BySCI
Language英语
WOS IDWOS:000382482200045
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/135897
Collection海洋环境腐蚀与与生物污损重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Marine Environm Corros & Biofouling, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wan, Kai,Feng, Panpan,Hou, Baorong,et al. Enhanced corrosion inhibition properties of carboxymethyl hydroxypropyl chitosan for mild steel in 1.0 M HCl solution[J]. RSC ADVANCES,2016,6(81):77515-77524.
APA Wan, Kai,Feng, Panpan,Hou, Baorong,&Li, Yantao.(2016).Enhanced corrosion inhibition properties of carboxymethyl hydroxypropyl chitosan for mild steel in 1.0 M HCl solution.RSC ADVANCES,6(81),77515-77524.
MLA Wan, Kai,et al."Enhanced corrosion inhibition properties of carboxymethyl hydroxypropyl chitosan for mild steel in 1.0 M HCl solution".RSC ADVANCES 6.81(2016):77515-77524.
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