Discotic anthraquinones as novel corrosion inhibitor for mild steel surface

[Display omitted] •Synthesis of anthraquinone-based liquid crystal (RTAQ) utilizing condensation followed by O-alkylation reactions.•A superhydrophobic layer is formed by RTAQ on mild steel (MS) surfaces.•Electrochemical studies are used to check the effectiveness of the prepared RTAQ.•This liquid c...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of molecular liquids 2022-02, Vol.347, p.118194, Article 118194
Hauptverfasser: A S, Sowmyashree, Somya, Amita, Kumar, Sandeep, Rao, Srilatha, Kudur Jayaprakash, Gururaj
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:[Display omitted] •Synthesis of anthraquinone-based liquid crystal (RTAQ) utilizing condensation followed by O-alkylation reactions.•A superhydrophobic layer is formed by RTAQ on mild steel (MS) surfaces.•Electrochemical studies are used to check the effectiveness of the prepared RTAQ.•This liquid crystal exhibited 83.96% defensive actions against corrosion of MS in HCl medium.•The electron transfer site of the RTAQ was computed using analytical Fukui functions. Liquid crystals are primarily known for their application in electro-optical devices and their application potential in preventing corrosion has rarely been explored. This report elucidates the application of a room temperature anthraquinone based discotic liquid crystal 1,5-dihydroxy-2,3,6,7-tetrakis(3,7-dimethyloctyloxy)-9,10-anthraquinone 3 (RTAQ) as a corrosion inhibitor on mild steel surfaces. It also attempts to bring out the importance of mesogenic organization towards inhibiting corrosion for metals. The aforementioned RTAQ exhibits, cathodic type of inhibition. The inhibition efficiency obtained for RTAQ was found to be 83.96% at a higher concentration of the inhibitor. The results obtained from quantum studies are in good agreement with the experimental studies.
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2021.118194