Controllable synthesis of layered double hydroxide nanosheets to build organic inhibitor-loaded nanocontainers for enhanced corrosion protection of carbon steel

Phan, Minh Vuong; Tran, Thi Kim Thoa; Pham, Quynh Nhu; Do, Manh Huy; Nguyen, Thi Hong No; Nguyen, Minh Ty; Phan, Thanh Thao; To, Thi Xuan Hang

doi:10.1039/d3na00570d

Cited by 3 publications

(1 citation statement)

References 55 publications

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“…To achieve their multi-functionality, the active species with anticorrosive properties were preloaded into the containers and then finely dispersed in the polymer matrix . A lot of study has been reported using micro/nanocontainers for the encapsulation of corrosion inhibitors including ordered mesoporous silica, graphene oxide, , carbon nanotubes, clay, , covalent organic frameworks (COFs), layered double hydroxides, and zeolites . Due to their eco-friendliness, ion exchange capabilities, corrosion inhibiting properties, and precisely aligned pore sizes, zeolites are regarded as highly promising candidates for utilization as micro/nanocontainers in the realm of anticorrosive paints and coatings. − …”

Section: Introductionmentioning

confidence: 99%

Role of Silicoaluminophosphate as a Corrosion Inhibiting Nanocontainer and Filler in Environmentally Benign Bio-Based Hybrid Coatings

Kashyap,

Borah,

Shailesh Kumar

et al. 2024

ACS Sustainable Resour. Manage.

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Zeolites, renowned for their versatile properties, have emerged as highly promising materials across a spectrum of applications. Coupled with their remarkable thermal and chemical stabilities, these properties broaden the horizons of zeolite applications across various industrial sectors. Their multifaceted functionality positioned them as optimal materials for filler incorporation in paints and coatings technology, offering both ecological soundness and economic viability. Moreover, in pursuit of sustainability, the selection of a bio-based polymer matrix for embedding the filler is essential. This strategic choice not only mitigates volatile organic compounds (VOCs) and toxicity but also underscores a concerted effort toward eco-conscious practices. Herein, we report the development of the bio-based hybrid coatings containing a microporous zeolite material with a one dimensional channels system (i.e., SAPO-5) as the filler and nanocontainer for an anticorrosive agent (Mo). The material (Mo-SAPO-5) was prepared through hydrothermal synthesis and ex situ modification with molybdenum. Before incorporation into the coating formulations, it was characterized via a combination of various spectroscopic and analytic techniques including powder XRD, FT-IR, and N2 sorption. Subsequently, the Mo-SAPO-5 nanocontainer system was incorporated into a castor-oil-based polyurethane matrix as a filler with variable weight ratios (up to 2 wt %). The physicochemical, mechanical, and thermal properties of the free-standing PU films were thoroughly examined through a standard protocol involving FT-IR-ATR, XRD, TGA, DSC, DMTA, and UTM. Finally, the hybrid PU films were cast on a mild steel substrate and were subjected to a corrosion inhibition study by potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS) techniques, and a salt spray fog test. The studies revealed that out of all the compositions prepared, the MoS5-COPU-0.5 films (with 0.5 wt % filler) exhibited a promising anticorrosive property with the highest corrosion inhibition (C R ≈ 5.77 × 10–6 mm/year), charge transfer resistance (R ct ≈ 1.33 × 107 Ω), and phase angle (θ > 80°).

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Section: Introductionmentioning

confidence: 99%

Role of Silicoaluminophosphate as a Corrosion Inhibiting Nanocontainer and Filler in Environmentally Benign Bio-Based Hybrid Coatings

Kashyap,

Borah,

Shailesh Kumar

et al. 2024

ACS Sustainable Resour. Manage.

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Zn-Layered Double Hydroxide Intercalated with Graphene Oxide for Methylene Blue Photodegradation and Acid Red Adsorption Studies

Al-Ammari,

Al-Malwi,

Abdel-Fadeel

et al. 2024

Catalysts

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This study focuses on the synthesis of a novel layered double hydroxide and its application in two environmental remediation processes. Graphene oxide, a two-dimensional material, has potential applications in this field. However, its tendency to agglomerate restricts its usability. Our objective was to increase the morphology and performance of layered double hydroxide (LDH) by combining GO with hydrotalcite. The LDH/GO nanohybrids were utilized as photocatalysts for the degradation of methylene blue (MB) dye and were investigated as sorbents for acid red (A.R) dye in water. In order to achieve this objective, ZnAl-NO3 LDH was synthesized using the co-precipitation method, with a Zn:Al ratio of ~3. Subsequently, the LDH was intercalated with varying ratios of as-received graphene oxide. An array of analytical techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) measurements, N2 physisorption, scanning electron microscopy–energy-dispersive X-ray analysis (SEM-EDX), and diffuse reflectance UV–vis spectra (DR UV-vis), were employed to examine the physicochemical properties of the synthesized LDH. These techniques confirmed that the obtained material is zinc-aluminum hydrotalcite intercalated with GO. The addition of graphene oxide (GO) to the layered double hydroxide (LDH) structure improved the performance of the hydrotalcite. As a result, the composite ZnAl-LDH-10 shows significant potential in the field of photocatalytic degradation of MB. Additionally, the incorporation of GO enhanced the absorption of light in the visible region of the spectra, leading to improved elimination of A.R compared to LDH without GO or other ratios of GO.

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Composite Anion Exchange Membranes Containing a Long-Side Chain Ionomer and Exfoliated Lamellar Double Hydroxides

Narducci,

Syahputra,

Di Vona

et al. 2024

Membranes

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Anion Exchange Membranes (AEMs) are promising materials for electrochemical devices, such as fuel cells and electrolyzers. However, the main drawback of AEMs is their low durability in alkaline operating conditions. A possible solution is the use of composite ionomers containing inorganic fillers stable in a basic environment. In this work, composite anion exchange membranes are prepared from poly (2,6-dimethyl-1,4-phenylene oxide) with quaternary ammonium groups on long-side chains (PPO-LC) and exfoliated Mg/Al lamellar double hydroxide (LDH) as inorganic filler added in different percentages (2, 5, and 10%). The mechanical stiffness of the membranes increases significantly by the addition of exfoliated LDH up to 5%. The ionic conductivity is measured as a function of the temperature in fully humidified conditions and as a function of relative humidity (RH). The maximum conductivity is observed for 5% LDH. The average activation energy for conductivity amounts to 0.20 ± 0.01 eV in fully humidified conditions and >50% RH. Thermogravimetric analysis of membranes before and after alkaline degradation tests (2 M KOH @ 80 °C, 48 h) reveals that the sample with 5% LDH has improved stability (19% vs. 36% of degradation). The stability tests are also investigated, measuring the ionic conductivity and the water uptake. A protective effect of LDH on the alkaline degradation of quaternary ammonium groups is clearly evidenced and opens the way to the use of different compounds and exfoliation methods in the LDH family.

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Controllable synthesis of layered double hydroxide nanosheets to build organic inhibitor-loaded nanocontainers for enhanced corrosion protection of carbon steel

Abstract: The coalescence of hydroxide layers is diminished by hydraulic shear forces, leading to the even distribution of LDH nuclei, which promote the growth of individual crystals along the horizontal plane and result in nanosheet particles.

Cited by 3 publications

References 55 publications

Role of Silicoaluminophosphate as a Corrosion Inhibiting Nanocontainer and Filler in Environmentally Benign Bio-Based Hybrid Coatings

Role of Silicoaluminophosphate as a Corrosion Inhibiting Nanocontainer and Filler in Environmentally Benign Bio-Based Hybrid Coatings

Zn-Layered Double Hydroxide Intercalated with Graphene Oxide for Methylene Blue Photodegradation and Acid Red Adsorption Studies

Composite Anion Exchange Membranes Containing a Long-Side Chain Ionomer and Exfoliated Lamellar Double Hydroxides

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