New organic-inorganic LDH composites: Synthesis, characterization and catalytic behavior in the green epoxidation of α, β-unsaturated esters

Candu, Natalia; Paul, Diana; Marcu, Ioan–Cezar; Tudorache, Mădălina; Pârvulescu, Vasile I.; Coman, Simona M.

doi:10.1016/j.ica.2017.07.027

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…They also have the capability to alter the characteristics of metal cations and to realize anion exchange while maintaining their structural characteristics . Hence, LDH materials have high application values in various fields, including biotechnology, energy storage, and chemical catalysis. − However, the low electronic conductivity, ion diffusion ability, and their volume change during the lithium insertion and delithiation processes limit the lithium ion battery performance . Nano-LDH materials can be used to overcome such weaknesses.…”

Section: Introductionmentioning

confidence: 99%

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Feng

Zhang

et al. 2020

Energy Fuels

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It still remains a major challenge to maintain the excellent lithium ion-storage performance of layered double hydroxide (LDH) for lithium ion battery anodes at high current density and long cycle times. Herein, a hybrid material was developed by anchoring Co/Ni/ LDH (CoNi-LDH) on the surface of graphene oxide (GO) to obtain good structural stability. During the growth process, the β phase with a low value (4.6 Å) of interlayer spacing was converted to the α phase with a high value (8.1 Å) of interlayer spacing and the sheet became thinner than that of CoNi-LDH alone. X-ray photoelectron spectroscopy (XPS) results demonstrate the formation of the CO chemical bond between the ultra thin CoNi-LDH and GO, which increased the structural stability and effectively reduced the charge-transfer impedance. As expected, the long-life cycling stability with a specific capacity of 440 mAh/g for 500 cycles was achieved at a high current density of 5 A/g, indicating that the structural degradation of CoNi-LDH was successfully suppressed by the introduction of GO.

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Section: Introductionmentioning

confidence: 99%

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Feng

Zhang

et al. 2020

Energy Fuels

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“…A better approach would be to develop the direct syntheses of organic anion intercalated layered metal hydroxides in order to both circumvent the need for anion exchange steps and deliver materials soluble in a broader range of solvents. [ 12 ]…”

Section: Introductionmentioning

confidence: 99%

Direct Organometallic Synthesis of Carboxylate Intercalated Layered Zinc Hydroxides for Fully Exfoliated Functional Nanosheets

Said

Roberts

Lee

et al. 2021

Adv Funct Materials

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Intercalation of organic anions into 2D materials can enable exfoliation, improve dispersion stability, increase surface area, and provide useful functional groups. In layered metal hydroxides, intercalation of bulk structures is commonly achieved by cumbersome and typically incomplete anion exchange reactions. In contrast, here, a series of carboxylate-intercalated layered zinc hydroxides (LZH-R) are synthesized directly, at room temperature, by reacting an organozinc reagent with a precise sub-stoichiometric quantity of the desired carboxylic acid and water. A range of carboxylic acids are used to make new LZH-R materials which are crystalline, soluble, and functionalized, as established by X-ray diffraction, spectroscopic, and microscopy techniques. When R is an alkyl ether carboxylate, this direct synthesis method results in the spontaneous exfoliation of the LZH-R into monolayer nanosheets with high yields (70-80%) and high solubilities in alcohols and water of up to 180 mg mL −1 . By altering the carboxylate ligand, functional groups suitable for post-synthetic modification or for detection by fluorescence are also introduced. These examples demonstrate a versatile synthetic route for functional exfoliated nanosheets.

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“…Thus, scientific effort aims to produce new functional materials that could be applied in the industry and improve the current technology. Numerous examples can be found in the literature concerning the application of organic–inorganic materials among others as sorbents [1,2,3], catalysts [4], fillers in polymer materials [5,6], carriers for drug delivery [7,8], and electrode coatings [9].…”

Section: Introductionmentioning

confidence: 99%

The Nature of Interactions and UV-Induced Response within α-Zirconium Phosphate Intercalation Compounds with Azobenzenes

et al. 2019

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Azobenzenes immobilization on a solid support enables the usage of their trans-cis isomerization ability for preparation of functional materials. The behavior of azobenzenes in the interlayer space of α-zirconium phosphate (ZrP) upon the UV–Vis irradiation was investigated. Two experimental approaches were performed: (1) co-intercalation of benzylalkylammonium surfactants and azobenzene in the interlayers of ZrP (ZBCnA), and (2) intercalation of p-aminoazobenzene (ZpA). The materials were characterized with XRD, FTIR, UV–Vis, CHN analysis, and the molecular modeling. The molecules in ZBCnA samples were sparsely packed and held by weak hydrophobic interactions. Conversely, the molecules in ZpA sample were strongly H-bonded to the ZrP, well-ordered, and densely packed. These structural features determined the samples’ photoresponsive behavior. Low density of molecules in the ZBCnA samples, allowed the effective, fast, and reversible isomerization of azobenzene. Whereas the ZpA sample did not react to the UV irradiation because of the steric hindrance of tightly packed molecules.

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New organic-inorganic LDH composites: Synthesis, characterization and catalytic behavior in the green epoxidation of α, β-unsaturated esters

Cited by 6 publications

References 22 publications

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Ni-Co Double Hydroxide Grown on Graphene Oxide for Enhancing Lithium Ion Storage

Direct Organometallic Synthesis of Carboxylate Intercalated Layered Zinc Hydroxides for Fully Exfoliated Functional Nanosheets

The Nature of Interactions and UV-Induced Response within α-Zirconium Phosphate Intercalation Compounds with Azobenzenes

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