Diethylenetriamine functionalized graphene oxide as a novel corrosion inhibitor for mild steel in hydrochloric acid solutions

In the present work diethylenetriamine functionalized graphene oxide (DETA-GO) has been synthesized and its corrosion inhibition performance was evaluated in 1 M HCl for mild steel. The chemical structure of the synthesized DETA-GO was analyzed by FTIR and the morphology was studied using SEM, TEM,...

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Bibliographic Details
Published in:New journal of chemistry 2019, Vol.43 (5), p.2328-2337
Main Authors: Baig, Nadeem, Chauhan, D. S, Saleh, Tawfik A, Quraishi, M. A
Format: Article
Language:English
Subjects:
Cathodic protection
Chemical synthesis
Corrosion
Corrosion inhibitors
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrode polarization
Graphene
Hydrochloric acid
Low carbon steels
Morphology
Organic chemistry
Protective coatings
Steel structures
Weight loss
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Summary:In the present work diethylenetriamine functionalized graphene oxide (DETA-GO) has been synthesized and its corrosion inhibition performance was evaluated in 1 M HCl for mild steel. The chemical structure of the synthesized DETA-GO was analyzed by FTIR and the morphology was studied using SEM, TEM, and FTIR. The corrosion inhibition behavior was studied using weight loss studies, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. DETA-GO behaved as an efficient corrosion inhibitor as evident from the results of the electrochemical analysis. Electrochemical studies showed that the inhibition efficiency of DETA-GO increased with the concentration and reached 92.67% at a concentration of 25 mg L −1 . The inhibitor exhibits a mixed type nature with cathodic predominance. The protective film of the inhibitor over the mild steel surface was examined by SEM and FTIR-ATR studies. A computational study using DFT further supports the promising corrosion inhibition behavior of DETA-GO. Electrochemical and surface studies of diethylenetriamine functionalized graphene oxide as a novel corrosion inhibitor for mild steel in hydrochloric acid solutions.
ISSN:1144-0546
1369-9261
DOI:10.1039/c8nj04771e