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
Polypropylene/Layered Double Hydroxide Nanocomposites: Influence of LDH Intralayer Metal Constituents on the Properties of Polypropylene
Baku Nagendra,Baku Nagendra,C. V. Sijla Rosely,C. V. Sijla Rosely,Andreas Leuteritz,Uta Reuter,E. Bhoje Gowd,E. Bhoje Gowd +7 more
TL;DR: These results demonstrated that the nanocomposites prepared using three-metal LDH showed better thermal and flame-retardant properties compared to the Nanocomposite prepared using two-metalLDH.
Journal ArticleDOI
In situ polymerization of sulfonated polyaniline in layered double hydroxide host matrix for corrosion protection
TL;DR: The hybrid material of sulfonated polyaniline/Mg Al layered double hydroxides (SPANi/LDHs) was obtained through polymerization of o-aminobenzenesulfonic acid and aniline in the galleries of LDHs as mentioned in this paper.
Journal ArticleDOI
A New Defect‐Rich CoGa Layered Double Hydroxide as Efficient and Stable Oxygen Evolution Electrocatalyst
Journal ArticleDOI
Micrometer-Thick Graphene Oxide-Layered Double Hydroxide Nacre-Inspired Coatings and Their Properties.
You-Xian Yan,Hong-Bin Yao,Li-Bo Mao,Abdullah M. Asiri,Khalid A. Alamry,Hadi M. Marwani,Shu-Hong Yu +6 more
TL;DR: Strong, colorful, and fire-retardant micrometer-thick hybrid coatings are reported, which can be constructed via an enhanced layer-by-layer assembly of graphene oxide (GO) nanosheets and layered double hydroxide (LDH) nanoplatelets.
Journal ArticleDOI
Delamination and self-assembly of layered double hydroxides for enhanced loading capacity and corrosion protection performance
TL;DR: In this paper, a new method combining delamination and self-assembly was proposed to increase the loading of the organic corrosion inhibitor 5-Methyl-1,3,4-thiadiazole-2-thiol (MTT) into LDHs.
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