Preparation of Co–Al and Ni–Al layered double hydroxide thin films by a sol–gel process with hot water treatment

Tadanaga, Kiyoharu; Miyata, Akira; Ando, Daisuke; Yamaguchi, Naoko; Tatsumisago, Masahiro

doi:10.1007/s10971-012-2692-z

Cited by 25 publications

(13 citation statements)

References 25 publications

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“…The sol-gel approach was introduced by Lopez et al [19] to increase the cation ratio. It was further extended to include transition metals Ni, Cr, and CO [20][21][22] thanks to the demonstrated properties of homogeneity, thermal stability, quite good control of stoichiometry, high porosity [23].…”

Section: Sol-gel Methodsmentioning

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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Section: Sol-gel Methodsmentioning

confidence: 99%

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

Richetta¹

2017

J Material Sci Eng

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“…[22][23][24] Moreover, the possibility of depositing well-adherent in-situ grown LDH films on metal substrates by a simple hydrothermal process [6,[25][26] could offer significant opportunities for the fabrication of functionalized 3D electrodes for advanced batteries. [29][30][31][32][33][34] Recently, we have studied the ionic conductivity of in-situ grown Zn/Al LDHs films synthesized on aluminum substrates with three different inorganic anions, NO 3 À , Cl À and F À , intercalated in the interlamellar space. [29][30][31][32][33][34] Recently, we have studied the ionic conductivity of in-situ grown Zn/Al LDHs films synthesized on aluminum substrates with three different inorganic anions, NO 3 À , Cl À and F À , intercalated in the interlamellar space.…”

Section: Introductionmentioning

confidence: 99%

Layered Double Hydroxides Containing an Ionic Liquid: Ionic Conductivity and Use in Composite Anion Exchange Membranes

et al. 2018

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Zinc-aluminum layered double hydroxide (LDH) containing an ionic liquid, 1-butyl-3-methylimidazolium hydrogen sulfate (BmimSO 4 ), has been synthesized by a co-precipitation method. This strategy enabled the intercalation of the ionic liquid (IL) into the interlamellar space of LDH with the aim of increasing the ionic conductivity and reducing its dependence on water content. Pure and IL-intercalated LDHs have been characterized by Fourier-Transform Infrared (FTIR) spectroscopy and X-ray diffraction. Electrochemical Impedance Spectroscopy (EIS) measurements showed that the addition of IL enhanced the ionic conductivity of LDH by a factor of 15 at low humidity and by a factor of 9 at high humidity conditions. As a possible application, LDHs were dispersed as a guest filler in a composite anion exchange membrane (AEM) based on polysulfone-DABCO. In this case, the addition of IL remarkably improved the ionic conductivity of the membrane from 1.0 · 10 À9 to 2.4 · 10 À7 S/ cm at low humidity. At high humidity, the membranes reached a conductivity of 25 mS/cm at 25 8C in OH form. Stability tests of composite AEM confirmed the positive effect of LDH nanoparticles. Figure 1. Chemical formulas of a) LDH and b) 1-Butyl-3-methylimidazolium hydrogen sulfate (BmimSO 4 ).

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“…With the similar process, we found that MgAl LDH, 11) NiAl LDH and CoAl LDH 13) precipitated thin films were easily obtained with the hot water treatment. In addition, ZnAl LDHs intercalated with several organic anions were found to be easily obtained by immersion of precursor thin films in the water containing organic anions.…”

Section: Formation Process Of Flowerlike Aluminamentioning

confidence: 73%

Surface morphology control of thin films prepared by solution processes and its application

Tadanaga

2013

J. Ceram. Soc. Japan

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Surface morphology of materials brings various new properties to the surface, and thus, the control of the surface morphology is very important. In this paper, surface morphology control of solgel derived films using several processes has been reviewed. Hot water treatment (bottom up process), combination of UV-irradiation and chemical etching (top down process), and micropattern formation using a hydrophobic-hydrophilic patterned surface were reported.

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Preparation of Co–Al and Ni–Al layered double hydroxide thin films by a sol–gel process with hot water treatment

Cited by 25 publications

References 25 publications

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

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

Layered Double Hydroxides Containing an Ionic Liquid: Ionic Conductivity and Use in Composite Anion Exchange Membranes

Surface morphology control of thin films prepared by solution processes and its application

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