Exploring the inhibitive performance of amino-dicarbonitrile derivative for Q235 steel protection in Cl 3 CCOOH solution: effect of temperature and synergism with iodide ions
Source abstract
Abstract
Abstract The inhibitory performance of amino-dicarbonitrile derivative (ANC) for the protection of Q235 steel corrosion in trichloroacetic acid (Cl 3 CCOOH) solution was investigated using various methods. The surface adsorption of ANC was screened by SEM, AFM, and XPS methods. Based on the data, it can be concluded that ANC effectively inhibits Q235 steel in 0.5 M Cl 3 CCOOH solution, with 94.3 % inhibition efficiency ( η %) at 100 mg/L. The Freundlich model describes how ANC adsorbs on the surface of Q235 steel. Anodic and cathodic reactions are both retarded by ANC, a mixed type inhibitor. The depressed capacitive loop observed is the Nyquist diagram. The double layer capacitance decreases but the charge transfer resistance rises noticeably with the addition of ANC. The AFM and SEM micrographs provide unambiguous confirmation of the effective inhibition of ANC. The XPS result shows that ANC molecules functional groups are attached to the iron atoms.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Concrete Corrosion and Durability · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of New Energy and Materials , Southwest Petroleum University , Chengdu , Sichuan 610500 , China
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University , Chengdu , Sichuan 610500 , China
Department of Chemistry , Nagaland University , Lumami , Zunheboto 798627 , Nagaland , India
Department of Chemistry , College of Science, King Khalid University , P.O. Box 9004 , Abha , Saudi Arabia
Department of Chemistry , College of Science, Taif University , P.O. Box 11099 , Taif 21944 , Saudi Arabia
Core Research Facilities, King Fahd University of Petroleum & Minerals , Dhahran 31261 , Saudi Arabia
Funding
Deanship of Scientific Research, King Khalid University
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