Acceso abierto

Corrosion inhibition of iron surfaces with phosphatidic acid

Ahmed Sameer Al-Badran
Ahmed Sameer Al-Badran
 y 
Adam Mechler
Adam Mechler
   | 25 jul 2019
The EuroBiotech Journal's Cover Image
Acerca de este artículo
Artículo anterior
Artículo siguiente
Cite
Article Category: Research Article
Publicado en línea: 25 jul 2019
Páginas: 128 - 134
DOI: https://doi.org/10.2478/ebtj-2019-0015
Palabras clave
© 2019 Ahmed Sameer Al-Badran, Adam Mechler, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Figure 1

Representative QCM frequency sensogram of the corrosion experiment showing dissolution of iron at 25 °C using 0.01 M acetic acid solution. Ultrapure water was flushed through the chamber at 13 min to stop corrosion.
Representative QCM frequency sensogram of the corrosion experiment showing dissolution of iron at 25 °C using 0.01 M acetic acid solution. Ultrapure water was flushed through the chamber at 13 min to stop corrosion.

Figure 2

A typical QCM sensogram of a DMPA deposition and corrosion inhibitory test as changes of frequency (Δf; solid blue line) and energy dissipation (ΔD; dash red line multiplied by 10-6) against the time.
A typical QCM sensogram of a DMPA deposition and corrosion inhibitory test as changes of frequency (Δf; solid blue line) and energy dissipation (ΔD; dash red line multiplied by 10-6) against the time.

Figure 3

Representative QCM sensogram showing the removal of the top membrane leaflet by acetic acid on the DMPA coated iron chip.
Representative QCM sensogram showing the removal of the top membrane leaflet by acetic acid on the DMPA coated iron chip.

Figure 4

Contact angles of a water droplet on (A) uncoated iron oxide and (B) lipid coated iron oxide surface.
Contact angles of a water droplet on (A) uncoated iron oxide and (B) lipid coated iron oxide surface.

Figure 5

Fitted XPS spectrum of Fe 2p3/2 for the mixed iron oxide surface layer of the iron coated QCM chip using CasaXPS software (plotted in OriginPro). For fitting the method by by Biesinger et al (33) was used where the peak positions, FWHM and relative peak intensities were maintained constant for each series of peaks representing the specific oxidation states of iron; only the peak heights of the entire series were varied in the fitting.
Fitted XPS spectrum of Fe 2p3/2 for the mixed iron oxide surface layer of the iron coated QCM chip using CasaXPS software (plotted in OriginPro). For fitting the method by by Biesinger et al (33) was used where the peak positions, FWHM and relative peak intensities were maintained constant for each series of peaks representing the specific oxidation states of iron; only the peak heights of the entire series were varied in the fitting.

Figure 6

The mechanism of surface coating by liposome deposition. Bilayer coating forms spontaneously upon contact. The top leaflet of the bilayer may be removed upon acid treatment, however the bottom leaflet remains stable on the surface.
The mechanism of surface coating by liposome deposition. Bilayer coating forms spontaneously upon contact. The top leaflet of the bilayer may be removed upon acid treatment, however the bottom leaflet remains stable on the surface.

Figure 7

The condensation reaction mechanism of the lipid on the iron oxide surface. The hydroxyl group of the iron attaches to the phosphoryl group and the consequence of this step is chemical binding of the lipid to the metal oxide.
The condensation reaction mechanism of the lipid on the iron oxide surface. The hydroxyl group of the iron attaches to the phosphoryl group and the consequence of this step is chemical binding of the lipid to the metal oxide.

The XPS parameters: peak position (eV), FWHM, and the intensities for fitting the Fe 2p3/2; data from (33). Ave is the average value of the respective α and γ components of Fe2O3 and FeOOH.

CompoundPeak (eV)FWHM%
Fe706.60.88100.0
FeO(1)708.41.424.2
FeO(2)709.71.630.1
FeO(3)710.91.614.5
FeO(4)712.12.925.6
FeO(5)715.42.55.6
Ave. Fe2O3 (1)709.81.126.8
Ave. Fe2O3 (2)710.81.324.7
Ave. Fe2O3 (3)711.61.318.9
Ave. Fe2O3 (4)712.71.410.1
Ave. Fe2O3 (5)713.72.010.0
Ave. FeOOH(1)710.31.427.0
Ave. FeOOH(2)711.31.326.5
Ave. FeOOH(3)712.21.420.6
Ave. FeOOH(4)713.31.411.3
Ave. FeOOH(5)714.11.96.3
eISSN:
2564-615X
Idioma:
Inglés
Calendario de la edición:
4 veces al año
Temas de la revista:
Life Sciences, other, Medicine, Biomedical Engineering, Physics, Nanotechnology, Biophysics
RSS Feed de revista