Journal ArticleDOI
Synthesis, anion exchange, and delamination of Co-Al layered double hydroxide: assembly of the exfoliated nanosheet/polyanion composite films and magneto-optical studies.
TLDR
This paper describes a systematic study on the synthesis, anion exchange, and delamination of Co-Al layered double hydroxide (LDH), with the aim of achieving fabrication and clarifying the properties of LDH nanosheet/polyanion composite films.Abstract:
This paper describes a systematic study on the synthesis, anion exchange, and delamination of Co-Al layered double hydroxide (LDH), with the aim of achieving fabrication and clarifying the properties of LDH nanosheet/polyanion composite films. Co-Al-CO3 LDH hexagonal platelets of 4 mum in lateral size were synthesized by the urea method under optimized reaction conditions. The as-prepared CO3(2-)-LDH was converted to Cl- -LDH by treating with a NaCl-HCl mixed solution, retaining its high crystallinity and hexagonal platelike morphology. LDHs intercalated with a variety of anions (such as NO3-, ClO4-, acetate, lactate, dodecyl sulfate, and oleate) were further prepared from Cl- -LDH via an anion-exchange process employing corresponding salts. Exchanged products in various anion forms were found to show different delamination behaviors in formamide. Among them, best results were observed for NO3- -LDH in terms of the exfoliating degree and the quality of the exfoliated nanosheets. The delamination gave a pink transparent suspension containing well-defined nanosheets with lateral sizes of up to 2 microm. The resulting nanosheets were assembled layer-by-layer with an anionic polymer, poly(sodium styrene 4-sulfonate) (PSS), onto quartz glass substrates to produce composite films. Magnetic circular dichroism (MCD) measurements revealed that the assembled multilayer films exhibited an interesting magneto-optical response.read more
Citations
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Journal ArticleDOI
Modification and Restacking of Layered Terbium Hydroxide 2D Crystals
TL;DR: In this paper, the dodecyl sulfate ions (DSˉ)-intercalated layered terbium hydroxide (LTbH) in formamide, can be modified by DSˉ ions and further restacked to a new layer-structured compound.
Journal ArticleDOI
Hydrothermal synthesis and tuning of size and morphology of α-Co(OH)2 and α-Co2(OH)3Cl nanostructures as precursors for nanosized Co3O4
TL;DR: In this paper, the authors investigate the hydrothermally synthesized cobalt(II) hydroxide-based materials, which will be thermally converted to generate Co 3 O 4 nanostructures; an important class of materials characterized by good electrochemical, catalytic and optical properties.
Journal ArticleDOI
Preparation of Zn2+–Ni2+–Fe3+–CO32−LDHs and study of photocatalytic activities for decomposition of Methyl Orange solution
TL;DR: In this article, a new type photocatalytic materials of Zn2+−Ni2++−Fe3+−CO32−LDHs were prepared by complexing agent-assisted homogeneous precipitation technique.
Journal ArticleDOI
Quantification and key factors in delamination of (Mg1 − yNiy)1 − xAlx(OH)2(NO3)x·mH2O
Jayakumar Karthikeyan,Helmer Fjellvåg,Ørnulv B. Vistad,Kenneth D. Knudsen,A. Olafsen Sjåstad +4 more
TL;DR: In this article, the authors identify the key parameters influencing the degree of delamination of delaminated layered double hydroxides (LDH) and identify prerequisites for achieving high yield delamination routes evaluated.
Journal ArticleDOI
Synthesis and Characterization of Ifosfamide Intercalated Layered Double Hydroxides
Hong-Qian Nie,Wan-Guo Hou +1 more
TL;DR: In this paper, two anionic surfactants, SDS and SDBS, were intercalated into Mg2Al layered double hydroxides (LDHs) using the anion exchange method.
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