Mg–Al layered double hydroxides (LDHs) and their derived mixed oxides grown by laser techniques

Matei, A.; Bı̂rjega, R.; Nedelcea, A.; Vlad, A.; Colceag, D.; Ionita, Maria Daniela; Luculescu, C.; Dinescu, M.; Zăvoianu, Rodica; Pavel, Octavian Dumitru

doi:10.1016/j.apsusc.2010.11.051

Cited by 32 publications

(16 citation statements)

References 11 publications

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“…XRD patterns ( Figure 3 ) for the films deposited via combined PLD-MAPLE method reveal the deposition of a (00 l ) oriented LDH structure similar to our previous results [ 10 , 11 , 12 , 13 , 14 , 15 ] and to the present single PLD depositions. The lattice c parameter and the coherence length along the c-axis, D 003 , are included in Table 2 .…”

Section: Resultssupporting

confidence: 87%

“…Two Nd:YAG pulsed lasers working in IR or UV were used to irradiate the complex target. Based on our previous experiments [ 10 , 11 , 12 , 13 , 14 , 15 , 16 ], we established the best set of deposition conditions in the range of 0.5–0.6 J/cm 2 for MAPLE (266 nm wavelength, 10 Hz) and 1.5–3 J/cm 2 for PLD (266 or 1064 nm wavelength, 3 Hz), depending on the used wavelength. All depositions took place in vacuum (1 × 10 −4 mbar—starting pressure), with an increase of the pressure during irradiation, due to the solvent evaporation.…”

Section: Methodsmentioning

confidence: 99%

“…are possible applications for LDHs as thin films. For all these applications, a crystalline controlled structure is needed [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques

et al. 2020

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We report on the investigation of stearic acid-layered double hydroxide (LDH) composite films, with controlled wettability capabilities, deposited by a combined pulsed laser deposition (PLD)-matrix-assisted pulsed laser evaporation (MAPLE) system. Two pulsed lasers working in IR or UV were used for experiments, allowing the use of proper deposition parameters (wavelength, laser fluence, repetition rate) for each organic and inorganic component material. We have studied the time stability and wettability properties of the films and we have seen that the morphology of the surface has a low effect on the wettability of the surfaces. The obtained composite films consist in stearic acid aggregates in LDH structure, exhibiting a shift to hydrophobicity after 36 months of storage.

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Section: Resultssupporting

confidence: 87%

Section: Methodsmentioning

confidence: 99%

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Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques

et al. 2020

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“…Our research group reported a new way to obtain LDHs thin films by pulsed laser deposition (PLD) and matrix assisted pulsed laser evaporation (MAPLE) [16][17][18]. We also reported on the ability of LDH thin films deposited via laser techniques to retain Ni or Co from aqueous M a n u s c r i p t solutions [17,18].…”

Section: Introductionmentioning

confidence: 94%

Detection of copper ions from aqueous solutions using layered double hydroxides thin films deposited by PLD

Vlad

Bı̂rjega

Matei

et al. 2015

Applied Surface Science

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“…Layered double hydroxides (LDHs) are widely used for a variety of applications, such as flame retardants, antacids, fillers for polymer composites, drug delivery, stabilizing agents in PVC, and in optical devices They exhibit surface basicity, whereby they are used as solid‐base catalysts for a wide range of base‐catalyzed reactions . They are also used for environmental amelioration on account of their excellent affinity and anion‐uptake properties for chromates, arsenates, fluorides, bromides, and phosphates .…”

Section: Introductionmentioning

confidence: 99%

Electronic‐Structure Calculations of Cation‐Ordered II‐III Layered Double Hydroxides: Origin of the Distortion of the Metal‐Coordination Symmetry

2017

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Cation ordering brings down the crystal symmetry and introduces distortion into the coordination polyhedra around the divalent cations. In particular, edge sharing of the differently sized [M(OH)6] polyhedra causes a non‐uniform distension of the array of hydroxy ions. The question arises as to whether this distortion has its origin in the Jahn–Teller distortion of metal coordination or a 2D “Peierls”‐type distortion of the array of hydroxy ions. To address this question, DFT calculations were performed on the sulfate‐intercalated [Cu–Cr], [Zn–Cr], and [Zn–Al] layered double hydroxides (LDHs). An analysis of the density of states shows that the distortion of the Cu2+ coordination polyhedron is due to the Jahn–Teller effect, whereas the Zn2+ coordination polyhedron in [Zn–Al] LDH likely suffers a “Peierls”‐type distortion. In the [Zn–Cr] LDH, electronic‐structure calculations do not predict any distortion in the metal coordination, which is in agreement with experimental results that show only a slight departure from ideal symmetry.

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Mg–Al layered double hydroxides (LDHs) and their derived mixed oxides grown by laser techniques

Cited by 32 publications

References 11 publications

Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques

Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques

Detection of copper ions from aqueous solutions using layered double hydroxides thin films deposited by PLD

Electronic‐Structure Calculations of Cation‐Ordered II‐III Layered Double Hydroxides: Origin of the Distortion of the Metal‐Coordination Symmetry

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