Investigating the inhibitive effect of Davidia involucrata leaf extract as a biological eco-friendly inhibitor for copper in acidic medium

Zhang, Xin; Li, Wenpo; Zuo, Xiuli; Tan, Bochuan; Cheng, Xu; Zhang, Shengtao

doi:10.1016/j.molliq.2020.115214

Cited by 57 publications

(3 citation statements)

References 62 publications

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“…The spectra of the source chemicals and the as-synthesized CDs are provided in Figure . The peaks at 3373, 1638, and 1585 cm –1 observed in the spectrum of o -phenylenediamine correspond to stretching of NH 2 , CC, and aromatic ring. , The peak at 749 cm –1 is related to out-of-plane bending vibration of aromatic CH . In the spectrum of thiourea, 1608 and 3375 cm –1 peaks agree to shearing and stretching vibrations of NH 2 while the one at 1477 cm –1 agrees to CS stretching .…”

Section: Resultsmentioning

confidence: 86%

One-Pot Hydrothermal Synthesized Nitrogen and Sulfur Codoped Carbon Dots for Acid Corrosion Inhibition of Q235 Steel

Guo

Zhu

et al. 2022

Langmuir

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N and S codoped carbon dots having good water solubility have been successfully made by a novel hydrothermal method and characterized by FTIR, XPS, and TEM. The as-synthesized CDs were carbon particles rich in polar functional groups less than 10 nm in size. Electrochemical measurements, gravimetry, and surface analysis methods were utilized to examine the inhibition characteristics and adsorption mechanism of CDs on the carbon steel in acid pickling solutions. Electrochemical measurements verified that the CDs displayed adequate protection with high inhibition efficiency of 97.8%. The long-term weightloss experiments up to 72 h further confirmed the excellent corrosion inhibition at room temperature and 313 K. The results presented are helpful for the formulation of more effective acid pickling corrosion inhibitors.

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Section: Resultsmentioning

confidence: 86%

One-Pot Hydrothermal Synthesized Nitrogen and Sulfur Codoped Carbon Dots for Acid Corrosion Inhibition of Q235 Steel

Guo

Zhu

et al. 2022

Langmuir

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“…Meanwhile, the C-N stretching peaks have shifted from 1372.5 to 1363.6 cm -1 . Thus, the two spectra have the same number of peaks, with minor shifts in wavenumber and an increase in absorbance in the adsorbed film spectra due to the presence of corrosion products 56 . Consequently, these results confirm that MOXI adsorption is physical rather than chemical.…”

Section: Ftir Analysismentioning

confidence: 97%

Evaluation of Expired Moxifloxacin Drug as Corrosion Inhibitor for Copper in Synthetic Acid Rain (SAR) Solution

Montaser,

El-Mahdy,

Mahmoud

et al. 2024

Preprint

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This paper evaluated the possibility of using quinoline derivative (an expired Moxifloxacin) as an inhibitor for copper corrosion in synthetic acid rain (SAR) solution. Weight reduction (WR) experiments, potentiodynamic polarization (PDP) and AC impedance spectra (EIS) were employed to investigate corrosion inhibition (ƞ%) and inhibition rates. (ƞ%) increases by increasing the concentration of MOXI in all test methods. The PDP curves indicated that this expired medication exhibited mixed-type inhibitory activity. According to the EIS tests, the ƞ % was found to improve with raising the MOXI concentration and reached 94.05% at 600 ppm. On the other hand, the ƞ% was lowered by raising the temperature. The adsorbed MOXI molecules on copper obey Langmuir isotherm model. Furthermore, scanning electron microscopy (SEM), atomic force microscopy (AFM), and Fourier transform infrared spectroscopy (FT-IR) are employed to examine the surface of the copper sample. The results acquired experimentally were validated through the application of density functional theory (DFT) and molecular simulation (MC) in theoretical calculations. All the tests metthods gave similar results.

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“…Tan et al and Zuo et al investigated the inhibitive effect of different eco-friendly and mixed-type inhibitors for metals in corrosive media. The results revealed excellent corrosion inhibition performance maintained in a wide temperature range [ 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

External Corrosion Behavior of Steel/GFRP Composite Pipes in Harsh Conditions

2021

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In this study, we report on the corrosion behavior of hybrid steel/glass fiber-reinforced polymer (GFRP) composite pipes under harsh corrosive conditions for prolonged durations. Specimens were immersed in highly concentrated solutions of hydrochloric acid, sodium chloride, and sulfuric acid for durations up to one year. Detailed qualitative analysis using scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), and energy-dispersive X-ray spectroscopy (EDX) is presented. It is shown that the hybrid pipes have excellent corrosion resistance with a corrosion rate of less than 1% of the corrosion rate for conventional steel pipes. That low corrosion rate can be attributed to the formation of pores in the GFRP layer due to increased absorption and saturation moisture in the material with increased soaking time. This can be reduced or even prevented through a more controlled process for fabricating the protective layers. These promising results call for more utilization of GFRP protective layers in novel design concepts to control corrosion.

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Investigating the inhibitive effect of Davidia involucrata leaf extract as a biological eco-friendly inhibitor for copper in acidic medium

Cited by 57 publications

References 62 publications

One-Pot Hydrothermal Synthesized Nitrogen and Sulfur Codoped Carbon Dots for Acid Corrosion Inhibition of Q235 Steel

One-Pot Hydrothermal Synthesized Nitrogen and Sulfur Codoped Carbon Dots for Acid Corrosion Inhibition of Q235 Steel

Evaluation of Expired Moxifloxacin Drug as Corrosion Inhibitor for Copper in Synthetic Acid Rain (SAR) Solution

External Corrosion Behavior of Steel/GFRP Composite Pipes in Harsh Conditions

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