Piperidin-1-yl-phosphonic acid and (4-phosphono-piperazin-1-yl) phosphonic acid: A new class of iron corrosion inhibitors in sodium chloride 3% media

Amar, H.; Benzakour, J.; Derja, Ahmed; Villemin, Didier; Moreau, Bernard; Braisaz, T.

doi:10.1016/j.apsusc.2005.07.073

Cited by 76 publications

(30 citation statements)

References 26 publications

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“…The results from Figures 6,7,9, and 10 are summarized in Figure 11. Panel (a) shows the absolute surface concentration of the two anchor groups as a function of temperature.…”

Section: Resultsmentioning

confidence: 95%

“…6 Metal corrosion can be inhibited by monolayers of phosphonate SAMs. 7 SAM-forming phosphonic acid molecules have been used as coadsorbates in dye-sensitized solar cells to improve device efficiencies by the suppression of dark current. 8 Mercaptosilane-based SAMs have been used to link CdS quantum dots to porous TiO 2 films for efficient quantum dot-sensitized solar cells.…”

Section: Introductionmentioning

confidence: 99%

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Molecular Anchors for Self-Assembled Monolayers on ZnO: A Direct Comparison of the Thiol and Phosphonic Acid Moieties

Perkins

2009

J. Phys. Chem. C

108

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Two of the most promising schemes for attaching organic molecules to metal oxides are based on the chemistry of the thiol and phosphonic acid moieties. We have made a direct comparison of the efficacy of these two molecular anchors on zinc oxide by comparing the chemical and physical properties of n-hexane derivatives of both. The surface properties of polycrystalline ZnO thin films and ZnO(0001 j )-O crystals modified with 1-hexanethiol and 1-hexanephosphonic acid were examined with a novel quartz crystal microbalance (QCM)-based flow cell reactor, angle-resolved and temperature-dependent photoelectron spectroscopy, and contact angle measurements. A means of using ammonium chloride as a probe of molecule-ZnO interactions is introduced and used to ascertain the relative quality of self-assembled monolayers (SAMs) based on thiols and phosphonic acids. QCM data shows that a phosphonic acid-anchored alkyl chain only six carbons long can provide significant corrosion protection for ZnO against Brønsted acids, reducing the etch rate relative to the bare ZnO surface by a factor of more than nine. In contrast, we find that monolayers from the analogous molecule hexanethiol are more defective as revealed by their higher ionic permeability and lower hydrophobicity. Substrate attenuation X-ray photoelectron spectroscopy (XPS) experiments were used to determine the thickness of SAMs formed by the two hexane derivatives and it was found that SAMs from phosphonic acids were approximately twice as thick as those formed by hexanethiol. The thermal stability of the two linking groups was also explored and we find that previous claims of highly stable alkanethiolate monolayers on ZnO are suspect. Taken as a whole, our results indicate that the phosphonic acid moiety is preferred over thiols for the attachment of short alkyl groups to ZnO.

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“…The results from Figures 6,7,9, and 10 are summarized in Figure 11. Panel (a) shows the absolute surface concentration of the two anchor groups as a function of temperature.…”

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Molecular Anchors for Self-Assembled Monolayers on ZnO: A Direct Comparison of the Thiol and Phosphonic Acid Moieties

Perkins

2009

J. Phys. Chem. C

108

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“…It is considered one of the factors that may affect the substrate behavior in an aggressive environment. For this, the potentiodynamic polarization curves for copper in make-up water were carried out at different temperatures range from 305 to 335 K. The choice of this temperature range was justified by the fact that iron, copper, and their alloys used in the cooling water systems where their temperature could reach 335 K (Amar et al 2006). Figure 6a presents the obtained results.…”

Section: Effect Of Temperature Solutionmentioning

confidence: 99%

Corrosion and scale studies of copper used in Moroccan industrial cooling water systems

Elhousni

Galai

ElKamraoui³

et al. 2017

Euro-Mediterr J Environ Integr

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The corrosion and scale behavior of copper in industrial cooling water system were investigated via electrochemical measurements, ionic chromatography, SEM/EDAX, and X-ray diffraction analyses. It was found that the studied water has a corrosion and scale character. The EDAX and XRD analyses indicated that the major corrosion and scale products were the CuO 2 and CaCO 3 , respectively. In addition, the middle Mueller-Hinton test was also employed to evaluate the development of microorganisms for copper in make-up water solution. It is noted that bacterial colonies appeared after immersion of samples in make-up water, indicating that this water develops bacterial colonization. Finally, the influence of some operating parameters on the corrosion and scale rate was studied. It was shown that the scale rate increases with pH, temperature, and the addition of chloride and sulfide ions. It was also found that the corrosion rate increases with temperature and chloride ions and decreases with pH and immersion time.

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“…Some examples are the hydroxyethane-diphosphonic acid, nitrilotri-phosphonic acid, 1-phosphonobutane-tricarboxylic acid. Numerous papers describe their effectiveness [12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

N-Substituted amino acids as multifunctional additives used in cooling water. Part II: N-carboxymethyl and phosphonomethyl amino acids

Telegdi

2016

Int. J. Corros. Scale Inhib.

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The aim of research was to find additives with different capacities that can control the undesired corrosion and scale formation at the same time. Amino acids with different (carboxymethyl and/or phosphonomethyl) substituents were investigated to prove their multifunctional effectiveness. The most interesting parameters were the number of -COOH and -PO 3 H 2 groups as well as the structure of the side chain in the amino acids. The experimental data proved that both the alkyl side chains (with or without additional carboxy and phosphonic groups) as well as the number of the ionizable substituents in the molecules influence the both efficacies.

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Piperidin-1-yl-phosphonic acid and (4-phosphono-piperazin-1-yl) phosphonic acid: A new class of iron corrosion inhibitors in sodium chloride 3% media

Cited by 76 publications

References 26 publications

Molecular Anchors for Self-Assembled Monolayers on ZnO: A Direct Comparison of the Thiol and Phosphonic Acid Moieties

Molecular Anchors for Self-Assembled Monolayers on ZnO: A Direct Comparison of the Thiol and Phosphonic Acid Moieties

Corrosion and scale studies of copper used in Moroccan industrial cooling water systems

N-Substituted amino acids as multifunctional additives used in cooling water. Part II: N-carboxymethyl and phosphonomethyl amino acids

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