Effective Corrosion Inhibition of Carbon Steel in Hydrochloric Acid by Dopamine-Produced Carbon Dots
Open Access
- 10 June 2021
- Vol. 13 (12), 1923
- https://doi.org/10.3390/polym13121923
Abstract
In present study, novel nitrogen doped carbon dots (NCDs) are synthesized using a green material—dopamine—as a precursor and studied as corrosion inhibitors for Q235 carbon steel in 1 M HCl solution. According to the electrochemical results, it is found that NCDs acting as a mixed-type corrosion inhibitor can effectively retard the acid corrosion of carbon steel, and their inhibition efficiency increases with the concentration increasing from 50 to 400 ppm. The highest inhibition efficiency is 96.1% in the presence of 400 ppm NCDs at room temperature. Additionally, the adsorption of NCDs obeys the Langmuir adsorption isotherm. In addition, weight loss results show that the inhibition efficiency in the presence of 400 ppm NCDs increases with prolonged exposure time and rising temperature (298–328 K), owing to the strong adsorption of NCDs on the steel surface, and the η value is 92.2% at 60 h of immersion and 86.2%, 89.1%, 90.6% and 92.9% at 298, 308, 318 and 328 K, respectively. Surface analysis by scanning electron microscope (SEM), laser scanning confocal microscope (LSCM) and X-ray photoelectron spectroscopy (XPS) further proves the formation of a protective NCD film on the steel surface.Keywords
Funding Information
- National Natural Science Foundation of China (51905278)
- Special research funding from the Marine Biotechnology and Marine Engineering Discipline Group in Ningbo University (null)
This publication has 44 references indexed in Scilit:
- New 1 H -pyrrole-2,5-dione derivatives as efficient organic inhibitors of carbon steel corrosion in hydrochloric acid medium: Electrochemical, XPS and DFT studiesCorrosion Science, 2015
- Silybum marianum extract as a natural source inhibitor for 304 stainless steel corrosion in 1.0 M HClJournal of Industrial and Engineering Chemistry, 2014
- Corrosion inhibition of mild steel in acidic solution by Tagetes erecta (Marigold flower) extract as a green inhibitorCorrosion Science, 2014
- Phenolic and non-Phenolic Fractions of the Olive Oil Mill Wastewaters as Corrosion Inhibitor for Steel in HCl mediumPortugaliae Electrochimica Acta, 2014
- Carbon Dots Prepared by Hydrothermal Treatment of Dopamine as an Effective Fluorescent Sensing Platform for the Label‐Free Detection of Iron(III) Ions and DopamineChemistry – A European Journal, 2013
- Drugs: A review of promising novel corrosion inhibitorsCorrosion Science, 2011
- Oxidant-induced dopamine polymerization for multifunctional coatingsPolymer Chemistry, 2010
- Carbon Dots as Nontoxic and High-Performance Fluorescence Imaging AgentsThe Journal of Physical Chemistry C, 2009
- The inhibitive effect of some bis-N,S-bidentate Schiff bases on corrosion behaviour of 304 stainless steel in hydrochloric acid solutionCorrosion Science, 2009
- Antibacterial drugs as corrosion inhibitors for corrosion of aluminium in hydrochloric solutionCorrosion Science, 2004