Surface spectroscopy and structural analysis of nanostructured multifunctional (Zn, Al) layered double hydroxides

Richetta, M.; Digiamberardino, L.; Mattoccia, A.; Medaglia, P. G.; Montanari, Roberto; Pizzoferrato, R.; Scarpellini, D.; Varone, Alessandra; Kačiulis, S.; Mezzi, A.; Soltani, P.; Orsini, Andrea

doi:10.1002/sia.5973

Cited by 39 publications

(18 citation statements)

References 24 publications

(32 reference statements)

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“…As already explained, in the solvent, the CMC cluster dissociated to 2 Cs + and 1 [Mo 6 Cl i 8 Cl a 6 ] 2ions and the Cs + cation can be kept by the exchangeable anion adsorbed on the LDH or Cl-from CMC, which was removed through the washing step. The binding energies of Zn 2p and Al 2p are respectively assigned by the two peaks at 1022.3 eV (2p 3/2 ) and 1045.4 eV (2p 1/2 ) and a peak of 74.7 eV that agrees with a previous study[48]. The dodecyl sulfate component is confirmed by the appearance of the binding energy of the S2p at the peak of 169.1 eV.It is important to verify the difference in the binding energy of the Mo and Cl components in the Mo 6 cluster after intercalated into the LDH.…”

supporting

confidence: 90%

Zn-Al layered double hydroxide-based nanocomposite functionalized with an octahedral molybdenum cluster exhibiting prominent photoactive and oxidation properties

Nguyen

Matsui

Shirahata

et al. 2020

Applied Clay Science

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A new layered double hydroxide (LDH)-based nanocomposite functionalized with an octahedral molybdenum atom cluster (MC) exhibiting prominent photoactive and oxidation properties was synthesized. Zn-Al LDH and Zn-Al LDH intercalated dodecyl sulfate compounds (abbreviated as LDH-1 and LDH-2 respectively) were prepared by the co-precipitation method in an aqueous solution. The MCs were simply introduced into the LDH-2 by an anion exchangeable method in dimethylformamide under ambient conditions. The extension of the basal spacing of the LDH-1 from 0.9 nm to about 5 nm by intercalating dodecyl sulfate and Mo 6 cluster was confirmed by several complementary technics. The octahedral structure of the Mo 6 cluster was retained after promising candidate as a heterogenized homogeneous catalyst for removing organic pollutants.

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supporting

confidence: 90%

Zn-Al layered double hydroxide-based nanocomposite functionalized with an octahedral molybdenum cluster exhibiting prominent photoactive and oxidation properties

Nguyen

Matsui

Shirahata

et al. 2020

Applied Clay Science

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“…In a previous work of Richetta et al [34] (Zn-Al) LDH nanostructures were grown on Al foils. A nutrient solution composed of a 1:1 ratio of zinc chloride ZnCl 2 and hexamethylenetetramine (C 6 H 12 N 4 ) at 5 mM concentration was employed for the hydrothermal growth of LDH.…”

Section: Co-precipitationmentioning

confidence: 99%

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Richetta¹

2017

J Material Sci Eng

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The peculiar properties of layered Double Hydroxides (LDH) have progressively drawn the attention of the scientific community. The main characteristic of LDH is the ability to capture anionic species (organic and inorganic) to build different composites. This is made possible by the sandwich structure of the LDH, similar to the brucite architecture, made up of positive charged lamellas interspersed by anions. Several distant fields, ranging from medicine to physics and engineering, exhibit interest in LDH applications. To satisfy all those requirements, energy was spent to sculpt LDHs physical and chemical properties and for designing layered double hydroxides "ad hoc" for different needs and employments. Notably, among the many applications, those related to metallurgical processes and products are of particular interest. This paper presents the characteristics, the main preparation routes and reviews the applications of LDH to metallurgy with some examples taken from the experimental research of the author.

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“…Those studies were mainly addressed applications of LDHs as anticorrosion coatings or functionalized electrodes for electrical batteries and capacitors. More recently, our group has demonstrated that controlled films can also be grown an aluminum thin films, which were previously sputtered or evaporated on any surface [33,107]. In this way, LDHs films made of lamellar-like nanoplatelets, can be grown selectively on specific areas, with submicrometric-level resolution (about ±0.5 m), by prepatterning the aluminum layer with conventional photolithographic techniques (Figure 3).…”

Section: Controlled Film Depositionmentioning

confidence: 99%

Layered Double Hydroxides: Tailoring Interlamellar Nanospace for a Vast Field of Applications

Richetta¹,

Medaglia²,

Mattoccia³

et al. 2017

J Material Sci Eng

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Fifty-eight years ago Fenman, during an American Physical Society meeting at the California Institute of Technology, anticipated the problem of modifying and governing the world of the infinitely small. what is possible in principle… We are not doing it simply because we haven't yet gotten around to it." Useless to say how profound his sensibility for science was. We've just begun to walk in this enormous field, toward the assembly of devices atom by atom. What we did till now is still rudimentary. Anyhow we believe that Layered Double Hydroxides could play a role in manufacturing these nanometric equipments.Layered Double Hydroxides (LDHs) are 2D ionic lamellar nano-materials belonging to the group of anionic clays. Their structure consists of positively charged brucite-like layers and intercalated anions. The layered structure, together with the flexibility to intercept different anionic species in variable compositions, both inorganic and organic, has attracted increasing interest. In order to meet specific requirements in very distant fields, considerable efforts were made to tailor the physical/chemical properties of LDHs and to design engineered LDH for several applications, ranging from anticorrosion coatings, flame-retardants, catalysis, to water treatment/purification, and biomedical applications. Furthermore they have been applied in energy harvesting and conversion, thanks to the possibility of substituting the composing metals with transition metals.Within the framework of this contribution, we first briefly review the development of synthesis processes ( §1). In Paragraph 2, examples of the LDHs applications are reported. We will than focus on our laboratory experimental activities, showing the growth of the structures either on printed circuit tracks for applications of LDHs as gas sensors and biosensors. One more application is in nanostructured-modified textiles.

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Surface spectroscopy and structural analysis of nanostructured multifunctional (Zn, Al) layered double hydroxides

Cited by 39 publications

References 24 publications

Zn-Al layered double hydroxide-based nanocomposite functionalized with an octahedral molybdenum cluster exhibiting prominent photoactive and oxidation properties

Zn-Al layered double hydroxide-based nanocomposite functionalized with an octahedral molybdenum cluster exhibiting prominent photoactive and oxidation properties

Characteristics, Preparation Routes and Metallurgical Applications of LDHs: An Overview

Layered Double Hydroxides: Tailoring Interlamellar Nanospace for a Vast Field of Applications

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