Preparation of Mesoporous Basic Oxides through Assembly of Monodispersed Mg–Al Layered Double Hydroxide Nanoparticles

Kuroda, Yoshiyuki; Matsuno, Takamichi; Kamata, Keigo; Wada, Hiroaki; Shimojima, Atsushi; Kuroda, Kazuyuki

doi:10.1002/chem.201701282

Cited by 29 publications

(31 citation statements)

References 47 publications

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“…These issues significantly limit the chemical tunability and intercalation ability of LDH-based materials. Inspired by Kuroda et al work of LDH-NPs with exceptionally small size and enhanced anion exchangeability by modifying the surface using a tripodal ligand Tris [23][24][25]. In a similar manner, our group developed recently a novel approach where the host layer modified with tris(hydroxymethyl)aminomethane (Tris) prior to the intercalation of the classical Keggin cluster of Na 3 PW 12 O 40 ·15H 2 O (Na-PW 12 ) under ambient conditions without the necessity of degassing CO 2 ( Figure 4) [41].…”

Section: Host Layer Modification Methodsmentioning

confidence: 99%

“…Recently, Kuroda and co-workers prepared novel LDH nanoparticles with exceptionally small particle sizes (ca. 10 nm) by grafting a tripodal ligand of tris(hydroxymethyl) aminomethane (Tris) on the outer surface of LDH nanoparticles [23][24][25]. The Tris molecules were used as a surface-stabilizing agent by interacting with the LDH layer through multiple coordination, leading to effective control of the LDH nanoparticles' growth.…”

Section: Ldh-based Composite Materialsmentioning

confidence: 99%

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Polyoxometalate (POM)-Layered Double Hydroxides (LDH) Composite Materials: Design and Catalytic Applications

Miras

Song

2017

Catalysts

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Layered double hydroxides (LDHs) are an important large class of two-dimensional (2D) anionic lamellar materials that possess flexible modular structure, facile exchangeability of inter-lamellar guest anions and uniform distribution of metal cations in the layer. Owing to the modular accessible gallery and unique inter-lamellar chemical environment, polyoxometalates (POMs) intercalated with LDHs has shown a vast array of physical properties with applications in environment, energy, catalysis, etc. Here we describe how polyoxometalate clusters can be used as building components for the construction of systems with important catalytic properties. This review article mainly focuses on the discussion of new synthetic approaches developed recently that allow the incorporation of the element of design in the construction of a fundamentally new class of materials with pre-defined functionalities in catalytic applications. Introducing the element of design and taking control over the finally observed functionality we demonstrate the unique opportunity for engineering materials with modular properties for specific catalytic applications.Keywords: layered double hydroxides; polyoxometalates; intercalated materials Layered Double Hydroxides (LDHs)-Intro BackgroundLayered double hydroxides (LDHs) or hydrotalcite-like compounds are a large family of two-dimensional (2D) anionic clay materials made up of positively charged brucite-like layers with an interlayer region containing charge compensating anions and solvation molecules, which can be represented by the general formula -4]. As shown in Figure 1 and generally in the range of 0.20-0.33, which occupy the space between the layers compensating for the positive charge and inducing stability in the overall structure [5,6]. The M II /M III -based edge shared octahedra are used to construct 2D infinite sheets, whereas hydroxyl groups are organized on the vertices of the octahedra with the hydrogen atoms pointing toward the interlayer region, as a consequence forming a complex network of hydrogen bonds with the interlayer anions and water molecules [1,[7][8][9][10]. LDH-based materials are very attractive systems due to their robust structure,

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Section: Host Layer Modification Methodsmentioning

confidence: 99%

Section: Ldh-based Composite Materialsmentioning

confidence: 99%

Polyoxometalate (POM)-Layered Double Hydroxides (LDH) Composite Materials: Design and Catalytic Applications

Miras

Song

2017

Catalysts

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“…For instance, micelle-forming surfactant such as dodecyl sulfonate was utilized to induce discrete mesopores ~5 nm [ 47 ]. Pluronic polymers such as F127 and P123 were utilized to produce mesopores and high specific surface area [ 10 , 48 , 49 ]. However, to the best of our knowledge, there have been few reports on bio-templating method to produce porous LDO from LDH.…”

Section: Introductionmentioning

confidence: 99%

Development of Mesopore Structure of Mixed Metal Oxide through Albumin-Templated Coprecipitation and Reconstruction of Layered Double Hydroxide

Jung

Kim

2021

Nanomaterials

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Mixed metal oxide (MMO) with relatively homogeneous mesopores was successfully obtained by calcination and reconstruction of albumin-templated layered double hydroxide (LDH). The aggregation degree of albumin-template was controlled by adjusting two different synthesis routes, coprecipitation and reconstruction. X-ray diffraction patterns and scanning electron microscopic images indicated that crystal growth of LDH was fairly limited during albumin-templated coprecipitation due to the aggregation. On the hand, crystal growth along the lateral direction was facilitated in albumin-templated reconstruction due to the homogeneous distribution of proteins moiety. Different state of albumin during LDH synthesis influenced the local disorder and porous structure of calcination product, MMO. The N2 adsorption-desorption isotherms demonstrated that calcination on reconstructed LDH produced MMO with large specific surface area and narrow distribution of mesopores compared with calcination of coprecipitated LDH.

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“…Mesoporous metal oxides (MMOs) have been of great interest over the past decades for comprehensive applications including energy storage, selective oxidation, adsorption, and gas sensor . Most of these applications are strongly relied on their superior physical, chemical properties, and the combination of their advanced structural properties such as high specific surface areas, large pore volumes, and narrow pore size distributions .…”

Section: Introductionmentioning

confidence: 99%

A Polymer‐Oriented Self‐Assembly Strategy toward Mesoporous Metal Oxides with Ultrahigh Surface Areas

Xiong

Gao

et al. 2019

Advanced Science

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Mesoporous metal oxides (MMOs) have attracted comprehensive attention in many fields, including energy storage, catalysis, and separation. Current synthesis of MMOs mainly involve use of surfactants as templates to generate mesopores and organic reagents as solvents to hinder hydrolysis and condensation of inorganic precursors, which is adverse to adjusting the interactions between surfactants and inorganic precursors. The resulting products have uncontrollable pore structure, crystallinity, and relatively lower surface areas. Here, a facile and general polymer‐oriented self‐assembly strategy to synthesize a series of MMOs (e.g., TiO 2 , ZrO 2 , NbO 5 , Al 2 O 3 , Ta 2 O 5 , HfO 2 , and SnO 2 ) by using cationic polymers as porogens and metal alkoxides as metal oxide precursors in a robust aqueous synthesis system are reported. Nitrogen adsorption analysis and transmission electron microscopy confirm that the obtained MMOs have ultrahigh specific surface areas and large pore volumes (i.e., 733 m 2 g −1 and 0.485 cm 3 g −1 for mesoporous TiO 2 ). Moreover, the structural parameters (surface area, pore size, and pore volume) and crystallinity can be readily controlled by tuning the interactions between cationic polymers and precursors. The as‐synthesized crystalline mesoporous TiO 2 exhibits promising performance in photocatalytic water splitting of hydrogen production and a high hydrogen production rate of 3.68 mol h −1 g −1 .

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Preparation of Mesoporous Basic Oxides through Assembly of Monodispersed Mg–Al Layered Double Hydroxide Nanoparticles

Cited by 29 publications

References 47 publications

Polyoxometalate (POM)-Layered Double Hydroxides (LDH) Composite Materials: Design and Catalytic Applications

Polyoxometalate (POM)-Layered Double Hydroxides (LDH) Composite Materials: Design and Catalytic Applications

Development of Mesopore Structure of Mixed Metal Oxide through Albumin-Templated Coprecipitation and Reconstruction of Layered Double Hydroxide

A Polymer‐Oriented Self‐Assembly Strategy toward Mesoporous Metal Oxides with Ultrahigh Surface Areas

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