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
Facile assembly for fast construction of intercalation hybrids of layered double hydroxides with anionic metalloporphyrin
Juanjuan Ma,Lin Liu,ShanZhong Li,Yonghao Chen,Meng Zhuo,Feng Shao,Feng Shao,Junyan Gong,Zhiwei Tong +8 more
TL;DR: The intercalated hybrids appear to be promising catalysts owing to their good catalytic activity and selectivity.
Journal ArticleDOI
Layer-by-layer self-assembly of polyimide precursor/layered double hydroxide ultrathin films
TL;DR: In this paper, a layer-by-layer self-assembly method was used for the preparation of polyelectrolyte multilayer films using polyimide precursor/layered double hydroxide (LDH) ultrathin films.
Journal ArticleDOI
Boosting the supercapacitive behavior of CoAl‐layered double hydroxides via tuning the metal composition and interlayer space
Journal ArticleDOI
Processing and characterization of polystyrene nanocomposites based on CoAl layered double hydroxide
TL;DR: In this article, the development of polystyrene (PS) nanocomposites through solvent blending technique with diverse contents of modified Co Al layered double hydroxide (LDH) was discussed.
Journal ArticleDOI
Novel biomolecule-assisted interlayer anion-controlled layered double hydroxide as an efficient sorbent for arsenate removal
TL;DR: In this paper, an environmentally friendly L-arginine-assisted hydrothermal method was demonstrated for the synthesis of pure nitrate-containing layered double hydroxides (LDHs) via biomolecule-assisted methods.
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