Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 585, Issue -, Pages 287-301Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.11.059
Keywords
Betel leaves extracts; Q235; SEM; AFM; Langmuir mono-layer adsorption
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Funding
- Chongqing Graduate Student Research Innovation Project [CYB19032]
- National Natural Science Foundation of China [21878029, 21676035]
- Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province [2017-14]
- Key R&D projects of Datong [218023]
- Sail plan of Guangdong, China [2015YT02D025]
- Natural Science Foundation of Chongqing [cstc2017jcyjAX0309, cstc2018jcyjAX0313, cstc2018jcyjAX0009]
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This study utilized a simple and low-cost water extraction method to obtain Betel leaves extracts (BLE), which were investigated as an environmentally-friendly inhibitor. Experimental results showed that BLE exhibited good anti-corrosion properties for Q235 steel and high efficiency under certain conditions. Morphological analysis through SEM and AFM supported the data from electrochemical experiments.
In this paper, the simple and low-cost water extraction way was used to acquisition Betel leaves extracts (BLE). The water as the extraction solvent has the characteristics of low price, environmentally friendly, and good solubility for other extraction solvents. BLE was researched as an environmental-friendly inhibitor via various experimental methods and theoretical calculations. Electrochemical experiments manifest that BLE can restrain reactions of the cathode and anode of Q235 steel. The BLE concentration was 400 mg/L, the anti-corrosion efficiency was close to 94%. The experimental data show that BLE can show high-quality anti-corrosion nature for Q235 steel immersing in 1 M hydrochloric acid (HCl) environment at a certain temperature range. The morphology maps of scanning electron microscope (SEM) and atomic force microscopy (AFM) strongly proves the data of electrochemical experiments. In addition, the BLE adsorption at the Q235 steel surface belongs to the Langmuir mono-layer adsorption. Quantum chemical calculations (QCC) and molecular dynamics simulations (MDS) effectually manifest that BLE can show decent anti corrosion character. (C) 2020 Elsevier Inc. All rights reserved.
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