Evaluation of the inhibition behavior of carbon dots on carbon steel in HCl and NaCl solutions

An eco-friendly and effective corrosion inhibitor (N-CDs) was acquired by hydrothermal method in methacrylic acid and ethyl(methyl)amine precursors. Afterwards, the weight loss and electrochemistry measurement were chosen to appraise the corrosion inhibition behavior of as-prepared N-CDs for Q235 st...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science & technology 2020-04, Vol.43, p.144-153
Main Authors: Ye, Yuwei, Jiang, Zilong, Zou, Yangjun, Chen, Hao, Guo, Shengda, Yang, Qiumin, Chen, Liyong
Format: Article
Language:English
Subjects:
Adsorption film
Carbon dots
Corrosion protection
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An eco-friendly and effective corrosion inhibitor (N-CDs) was acquired by hydrothermal method in methacrylic acid and ethyl(methyl)amine precursors. Afterwards, the weight loss and electrochemistry measurement were chosen to appraise the corrosion inhibition behavior of as-prepared N-CDs for Q235 steel in Cl− contained solutions. The change rules of EIS and Tafel data displayed that the as-prepared N-CDs revealed a high-efficiency protection for steel in all test environments. Meanwhile, the inhibition efficiency of steel reached up to 93.93 % (1 M HCl) and 88.96 % (3.5 wt% NaCl) at 200 mg/L of N-CDs. Furthermore, the N-CDs could form the adsorption film on steel surface to avoid the strong attack of Cl−. By analysis, the adsorption mechanism of as-prepared N-CDs on steel surface was physicochemical interaction, which strictly complied with the Langmuir adsorption model in both solutions.
ISSN:1005-0302
1941-1162
DOI:10.1016/j.jmst.2020.01.025