Active protection coatings with layered double hydroxide nanocontainers of corrosion inhibitor

Zheludkevich, Mikhail L.; Poznyak, S.K.; Rodrigues, Luciana Machado; Raps, D.; Hack, T.; Dick, Luís Frederico Pinheiro; Nunes, Teresa; Ferreira, M.G.S.

doi:10.1016/j.corsci.2009.10.020

Cited by 483 publications

(189 citation statements)

References 33 publications

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“…Previous studies showed that unloaded Zn-Al LDH has been used to protect metallic coatings from corrosion in order to extend their service life [15,23]. In the present study, the unloaded Zn-Al LDH exhibited lower mortality, which indicates it as an ideal carrier for active compounds.…”

Section: Unloaded Nanocarriers Ldh and Sincsupporting

confidence: 50%

“…LDH are anionic clays with a typical lateral-size ranging from 20 to 40 nm [15,23], functioning as host-guest materials [24]. Both nanomaterials have already been successfully used for corrosion protection [15,[21][22][23] and more recently for fouling control, through the immobilization of different active compounds, including the above-mentioned pyrithiones, in the scope of the BYEFOULING FP7 project [25].…”

Section: Introductionmentioning

confidence: 99%

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Antimacrofouling Efficacy of Innovative Inorganic Nanomaterials Loaded with Booster Biocides

Gutner-Hoch

Freitas

Oliveira

et al. 2018

JMSE

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Abstract:The application of nano-structured compounds has been increasing rapidly in recent years, in several fields. The use of engineered nano-materials as carriers of antifouling compounds is just beginning and already reveals clear advantages compared to bulk active compounds, such as slowed and controlled release, novel functionality, and high loading capacity. This present study assesses the antifouling efficacy of two nanostructured materials, spherical mesoporous silica nanocapsules (SiNC) and Zn-Al layered double hydroxides (LDH), loaded with two commercial biocides, zinc prithione (ZnPT) and copper pyrithione (CuPT). The study used adult mussels from three geographical regions, the Atlantic Ocean, Mediterranean Sea, and the Red Sea, to examine the efficacy of the innovative compounds. The efficacy of these compounds on larvae of the bryozoan Bugula neritina from the Mediterranean Sea and the Red Sea was also examined. The results of this study demonstrated the environmentally friendly properties of unloaded LDH against the two-model systems, adult mussels or bryozoan larvae. ZnPT entrapped in LDH demonstrated the most effective antifouling compound against the two model systems. A comparison of the impact of the two compounds on macrofouling organisms from the different marine habitats examined in this study indicates a distinction associated with the organisms' different ecosystems. The Red Sea mussels and bryozoans, representing a tropical marine ecosystem, yielded the highest efficacy values among tested Atlantic Ocean and Mediterranean Sea mussels and bryozoans.

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Section: Unloaded Nanocarriers Ldh and Sincsupporting

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Antimacrofouling Efficacy of Innovative Inorganic Nanomaterials Loaded with Booster Biocides

Gutner-Hoch

Freitas

Oliveira

et al. 2018

JMSE

View full text Add to dashboard Cite

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“…Recently, attention has been given to LDH composition, ability to store different functional species and impact on the barrier properties of hybrid and organic coatings. For example, different ions (vanadates, organic inhibitors) were intercalated in LDH [117][118][119]. Localised impedance spectroscopy revealed the inhibiting effect of LDH loaded with mercaptobenzothiazole and added to epoxy coatings applied on AA2024.…”

Section: Anticorrosion Coatingsmentioning

confidence: 99%

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Richetta¹

2017

J Material Sci Eng

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The peculiar properties of layered Double Hydroxides (LDH) have progressively drawn the attention of the scientific community. The main characteristic of LDH is the ability to capture anionic species (organic and inorganic) to build different composites. This is made possible by the sandwich structure of the LDH, similar to the brucite architecture, made up of positive charged lamellas interspersed by anions. Several distant fields, ranging from medicine to physics and engineering, exhibit interest in LDH applications. To satisfy all those requirements, energy was spent to sculpt LDHs physical and chemical properties and for designing layered double hydroxides "ad hoc" for different needs and employments. Notably, among the many applications, those related to metallurgical processes and products are of particular interest. This paper presents the characteristics, the main preparation routes and reviews the applications of LDH to metallurgy with some examples taken from the experimental research of the author.

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“…This may be due to the prompt release of vanadates and the fast inhibitive action on the corrosion process at the defects. It is known that LDHs exchange the intercalated species within minutes [19], so vanadates may be available to protect the defects already when the first map is acquired after 30 minutes of immersion. The protection lasts over several days, which is evidenced by the corrosion being restricted to the defects and the level of attack remaining small during the complete testing period.…”

Section: Figurementioning

confidence: 99%

Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results

Tedim

Bastos

Kallip

et al. 2016

Electrochimica Acta

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In this work the protective effect of layered double hydroxide (LDH) films directly grown on the surface of 2024-T3 aluminium alloy is investigated using electrochemical impedance spectroscopy (EIS) and the scanning vibrating electrode technique (SVET).The SVET results focused on the localised nature of the corrosion process and are in agreement with the global response measured by EIS. Furthermore, the evolution of active corrosion protection rendered by LDH films is surveyed at microscale for the first time for long immersion periods in NaCl solution and in the presence of induced defects. The quantitative information provided by SVET is discussed and a parameter to describe the degree of corrosion localisation is introduced based on LDH systems.

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Active protection coatings with layered double hydroxide nanocontainers of corrosion inhibitor

Cited by 483 publications

References 33 publications

Antimacrofouling Efficacy of Innovative Inorganic Nanomaterials Loaded with Booster Biocides

Antimacrofouling Efficacy of Innovative Inorganic Nanomaterials Loaded with Booster Biocides

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results

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