Undoped and Eu3+ Doped Magnesium-Aluminium Layered Double Hydroxides: Peculiarities of Intercalation of Organic Anions and Investigation of Luminescence Properties

Smalenskaite, A.; Pavasaryte, Lina; Yang, Thomas C.-K.; Kareiva, Aivaras

doi:10.3390/ma12050736

Cited by 16 publications

(14 citation statements)

References 32 publications

(36 reference statements)

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“…Figure 4b shows that AZO thin films generally exhibit dense surfaces [21], but show a rough surface structure after aqueous solution treatment. The solution-treated samples shows the plate-like structural characteristic of LDH, and we confirmed the formation of hexagonally-shaped plate-like particles of LDH at 100 k magnification [22].…”

Section: Resultssupporting

confidence: 69%

Zn-Al Layered Double Hydroxide Thin Film Fabricated by the Sputtering Method and Aqueous Solution Treatment

2020

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Zn-Al layered double hydroxides (LDHs) were synthesized herein via a simple process. First, Al-doped ZnO film was deposited onto a glass substrate using the facing target sputtering system. Successful synthesis of the Zn–Al LDH was achieved via a treatment process using an aqueous solution which contains NO3− anions. X-ray diffraction analysis confirmed that it was consistent with the previous Zn–Al LDH synthesis experiment data, and the calculated d-value was 9.1 Å. Scanning electron microscopy observations revealed that the as-synthesized sample had a plate-like structure.

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Section: Resultssupporting

confidence: 69%

Zn-Al Layered Double Hydroxide Thin Film Fabricated by the Sputtering Method and Aqueous Solution Treatment

2020

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“…The surface of the substrate is covered with a monolithic layer of agglomerated plate-like particles that are 5–10 µm in size. However, the SEM micrographs obtained at a higher magnification clearly show that these plate-like particles are composed of hexagonally shaped nanoparticles that are characteristic of LDH structures [6]. An almost identical surface morphology was observed for the LDH coatings on the stainless-steel substrate.…”

Section: Resultsmentioning

confidence: 99%

“…The diffraction lines of Mg 3 Al LDH thin films are sharper and more intense for the sample obtained from the silicon, confirming higher crystallinity of synthesized Mg 3 Al LDH. In both cases, the single-phase crystalline LDHs have formed [4,5,6].…”

Section: Resultsmentioning

confidence: 99%

“…Layered double hydroxides (LDHs) are compounds composed of positively charged brucite-like layers, with an interlayer gallery containing charge-compensating anions and water molecules. The metal cations occupy the centres of shared oxygen octahedra whose vertices contain hydroxide ions that connect to form infinite two-dimensional sheets [1,2,3,4,5,6]. A chemical formula of Mg-Al LDH can be expressed as [Mg 2+ 1-x Al 3+ x (OH) 2 ] x+ (A m- ) x/m ]·nH 2 O, where A m− is an intercalated anion.…”

Section: Introductionmentioning

confidence: 99%

“…LDHs have been studied for their potential application to the removal of anions and also toxic metal ions from contaminated waters [20,21,22,23,24,25,26]. In recent years, inorganic–organic hybrid luminescence materials have been widely investigated due to their novel properties of forming stable compounds with lanthanides in the interlayer space of LDHs [4,6,27,28,29]. The LDH layers were demonstrated to offer anticorrosion protection [30,31,32,33,34].…”

Section: Introductionmentioning

confidence: 99%

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Sol–Gel Synthesis and Characterization of Coatings of Mg-Al Layered Double Hydroxides

Smalenskaite

Kaba

Grigoravičiūtė-Puronienė

et al. 2019

Materials

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In this study, new synthetic approaches for the preparation of thin films of Mg-Al layered double hydroxides (LDHs) have been developed. The LDHs were fabricated by reconstruction of mixed-metal oxides (MMOs) in deionized water. The MMOs were obtained by calcination of the precursor gels. Thin films of sol–gel-derived Mg-Al LDHs were deposited on silicon and stainless-steel substrates using the dip-coating technique by a single dipping process, and the deposited film was dried before the new layer was added. Each layer in the preparation of the Mg-Al LDH multilayers was separately annealed at 70 °C or 300 °C in air. Fabricated Mg-Al LDH coatings were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and atomic force microscopy (AFM). It was discovered that the diffraction lines of Mg3Al LDH thin films are sharper and more intensive in the sample obtained on the silicon substrate, confirming a higher crystallinity of synthesized Mg3Al LDH. However, in both cases the single-phase crystalline Mg-Al LDHs have formed. To enhance the sol–gel processing, the viscosity of the precursor gel was increased by adding polyvinyl alcohol (PVA) solution. The LDH coatings could be used to protect different substrates from corrosion, as catalyst supports, and as drug-delivery systems in medicine.

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Sol–gel synthesis of calcium phosphate-based biomaterials—A review of environmentally benign, simple, and effective synthesis routes

Ishikawa

Kareiva

2020

J Sol-Gel Sci Technol

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In this review article the available results about application of sol-gel synthesis method for the preparation of different calcium phosphates and composite materials are summarized. The attention is paid to calcium phosphate-containing compounds which show the biological properties and could be used as potential phosphate bioceramics in medicine. It was demonstrated that the sol-gel synthesis method is a powerful tool for the synthesis of calcium hydroxyapatite and other phosphates, and different calcium phosphate-based composites at mild synthetic conditions resulted in high reproducibility, high phase purity, and desired morphology. Thus, the sol-gel synthesis method enables the researchers to develop biomaterials with superior features in terms of biomedical applications.

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Undoped and Eu3+ Doped Magnesium-Aluminium Layered Double Hydroxides: Peculiarities of Intercalation of Organic Anions and Investigation of Luminescence Properties

Cited by 16 publications

References 32 publications

Zn-Al Layered Double Hydroxide Thin Film Fabricated by the Sputtering Method and Aqueous Solution Treatment

Zn-Al Layered Double Hydroxide Thin Film Fabricated by the Sputtering Method and Aqueous Solution Treatment

Sol–Gel Synthesis and Characterization of Coatings of Mg-Al Layered Double Hydroxides

Sol–gel synthesis of calcium phosphate-based biomaterials—A review of environmentally benign, simple, and effective synthesis routes

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