Carbon dots as new eco-friendly and effective corrosion inhibitor

被引：151

作者：

Cui, Mingjun ^{[1
,2
]}

Ren, Siming ^{[1
,2
]}

Xue, Qunji ^{[1
]}

Zhao, Haichao ^{[1
]}

Wang, Liping ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 726卷

关键词：

Q235 carbon steel; Carbon dot; Eco-friendly inhibitor; Electrochemical measurements; 1 M HCL; MILD-STEEL; ACIDIC-SOLUTION; IONIC LIQUIDS; GREEN; ADSORPTION; DERIVATIVES; EFFICIENCY; NANODOTS; EXTRACT;

D O I：

10.1016/j.jallcom.2017.08.027

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：

Inspired by the high water solubility and low cytotoxicity of N doped carbon dots (CDs) prepared by using antibiotic aminosalicylic acid (ASA) as precursor, we anticipate that these CDs may possess an excellent protective ability to inhibit the corrosion of carbon steel in aggressive solutions owing to its special structure. Therefore, the investigation on the inhibiting effect of CDs as eco-friendly corrosion inhibitor for Q235 carbon steel corrosion in 1 M HCl solution is first reported. Electrochemical techniques, weight loss, morphological and elements characterization are combined to investigate the inhibiting effect and corrosion mechanism. The results show that corrosion of Q235 carbon steel in 1 M HCl solution is significantly inhibited by the addition of CDs, which is attributed to the formation of CDs adsorption film, and the adsorption of CDs obeys a Langmuir adsorption isotherm.Besides, the protection efficiency increases with increasing concentration of CDs and prolonged immersion time, and reaches equilibrium eventually. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：680 / 692

页数：13

共 42 条

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