Mannich bases: Chemical structure, chemistry, coordination bonding and application in aqueous phase corrosion protection

Ganjoo, Richika; Verma, Chandrabhan; Thakur, Abhinay; AlFantazi, Akram; Assad, Humira; Sharma, Shveta; Dubey, Shikha; Kumar, Ashish

doi:10.1016/j.jiec.2023.10.056

Cited by 7 publications

(1 citation statement)

References 107 publications

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“…Corrosion protection methods primarily include the utilization of coatings, cathodic protection (CP), and corrosion inhibitors. − Coatings are prone to degradation over time, and their performance is often below standard values after a period of use . CP comprises two protection methods: sacrificial anode cathodic protection (SACP) and impressed current cathodic protection (ICCP) .…”

Section: Introductionmentioning

confidence: 99%

Review of TiO₂-Based Heterojunction Coatings in Photocathodic Protection

Xu,

Li,

Wen

et al. 2024

ACS Appl. Nano Mater.

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Photocathodic protection coating is an emerging anticorrosion technology that combines the protective characteristics of coating and cathodic protection. TiO 2 is stable and easy to prepare; however, it suffers from a low sunlight utilization rate and low photoelectric conversion efficiency. The construction of TiO 2 -based heterojunction coatings provides an effective solution to these challenges. This work summarizes the synthesis methods of TiO 2based heterojunction coatings, explores the charge-transfer mechanisms associated with various types of heterojunction coatings (e.g., type II heterojunction, p−n junction, Schottky junction, and Z-scheme heterojunction), and reviews the characterization methods used for heterojunction analysis. Finally, the application prospects and future research directions of TiO 2 -based heterojunction coatings are proposed. This study will help researchers understand the fabrication process and application of TiO 2 -based heterojunction coatings in photocathodic protection.

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Section: Introductionmentioning

confidence: 99%

Review of TiO₂-Based Heterojunction Coatings in Photocathodic Protection

Xu,

Li,

Wen

et al. 2024

ACS Appl. Nano Mater.

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Condensed Fukui function and experimental evaluation of the corrosion inhibition properties of some antipyrinyl‐imidazotriazole and their derivatives for copper in an acidic environment

Elsayed,

Barghout,

Ragab

et al. 2024

J Chinese Chemical Soc

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The effectiveness of synthesized antipyrinyl‐imidazotriazole and its derivatives as inhibitors for the corrosion of copper alloy in 0.5 M H2SO4 solution was tested using weight loss, electrochemical impedance spectroscopy (EIS) and potentiodyanmic polarization techniques. The generated results confirmed that the tested compounds have strong inhibition efficiencies for the protection of the corrosion of copper alloy in 0.5 M H2SO4. Maximum inhibition efficiencies (IEs) evaluated from electrochemical measurements at inhibitor's concentrations of 0.040 g/L were 85% (5‐(4‐Antipyrinyl)‐3H‐imidazo[1,2‐b][1,2,4]triazole), 60% (6‐Antipyrinyl‐imidazo[2,1‐b]thiazole) and 72% (2‐Antipyrinyl‐7‐ethoxy‐imidazo[2,1‐b]benzothiazole). It was observed that the inhibition efficiency was strongly influenced by the flow rate of the solution and was reduced to 79 (5‐(4‐Antipyrinyl)‐3H‐imidazo[1,2‐b][1,2,4]triazole), 60% (6‐Antipyrinyl‐imidazo[2,1‐b]thiazole), and 44% (2‐Antipyrinyl‐7‐ethoxy‐imidazo[2,1‐b]benzothiazole) at an agitation speed of 400 rpm. EI from weight loss was comparable with those from PDP of mixed‐type inhibition style and EIS of diffusion model. The low inhibition efficiency for 6‐Antipyrinyl‐imidazo[2,1‐b]thiazole was significantly enhanced from 60% to 90% through a synergistic effect of 0.0001 M KI. The Temkin and Frumkin isotherms indicate the physical adsorption of inhibitors on copper surface. Condensed Fukui function calculations reveal a common center for electrophilic attacks in the three molecules: the nitrogen in the bridged pyrrole rings (labeled as N11).

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Comprehensive Analysis of the Effect of New Efficient and High Temperature Resistant Imidazoline Derivatives on the Corrosion Inhibition Performance of Q235: Experimental and Theoretical Studies

Wang,

Fan,

Song

et al. 2024

Surface & Interface Analysis

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Background: Imidazoline derivatives were widely used in the field of metal corrosion protection due to the low toxicity and excellent corrosion inhibition performance. In order to further reduce synthesis costs and improve corrosion inhibition performance, oleic acid, diethylenetriamine, and anisaldehyde were used as raw materials to synthesize imidazole Schiff corrosion inhibitors (HM), and the corrosion inhibition mechanism on Q235 in 1.0 mol/L HCl solution was studied rigorously. Method: The corrosion inhibition ability was verified using weight loss and electrochemical experiments. Scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and X‐ray photoelectron spectroscopy (XPS) were used to detect and analyze the protective film formed on the surface of Q235 after weight loss. Density functional theory (DFT) demonstrated the adsorption sites and reaction activity of the corrosion inhibitor, Molecular Dynamics (MD) further validated the corrosion inhibition mechanism. Significant Findings: Imidazoline corrosion inhibitor could form a stable protective film on the surface of Q235. With the concentration increased of HM, the corrosion inhibition efficiency increased gradually, and with the temperature increased, the corrosion inhibition efficiency decreased gradually. At the optimal concentration, the corrosion inhibition rate could reach 98.98%. HM belonged to a mixed type corrosion inhibitor that mainly suppresses the cathode and could spontaneously adsorb on the metal surface, following the Langmuir isotherm for adsorption.

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Mannich bases: Chemical structure, chemistry, coordination bonding and application in aqueous phase corrosion protection

Cited by 7 publications

References 107 publications

Review of TiO₂-Based Heterojunction Coatings in Photocathodic Protection

Review of TiO₂-Based Heterojunction Coatings in Photocathodic Protection

Condensed Fukui function and experimental evaluation of the corrosion inhibition properties of some antipyrinyl‐imidazotriazole and their derivatives for copper in an acidic environment

Comprehensive Analysis of the Effect of New Efficient and High Temperature Resistant Imidazoline Derivatives on the Corrosion Inhibition Performance of Q235: Experimental and Theoretical Studies

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Mannich bases: Chemical structure, chemistry, coordination bonding and application in aqueous phase corrosion protection

Cited by 7 publications

References 107 publications

Review of TiO2-Based Heterojunction Coatings in Photocathodic Protection

Review of TiO2-Based Heterojunction Coatings in Photocathodic Protection

Condensed Fukui function and experimental evaluation of the corrosion inhibition properties of some antipyrinyl‐imidazotriazole and their derivatives for copper in an acidic environment

Comprehensive Analysis of the Effect of New Efficient and High Temperature Resistant Imidazoline Derivatives on the Corrosion Inhibition Performance of Q235: Experimental and Theoretical Studies

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Product

Resources

About

Review of TiO₂-Based Heterojunction Coatings in Photocathodic Protection

Review of TiO₂-Based Heterojunction Coatings in Photocathodic Protection