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
More filters
Journal ArticleDOI
AgCl and BiOCl composited with NiFe-LDH for enhanced photo-degradation of Rhodamine B
Daiqin Huang,Jianfeng Ma,Liangmin Yu,Deren Wu,Kai Wang,Meirong Yang,Dimitrios Papoulis,Sridhar Komarneni +7 more
TL;DR: In this article, the photo-catalytic activity of AgCl-BiOCl-NiFe-LDH composites was evaluated for the decolorization of RhB under the visible light irradiation, which showed that 97.8% of the dye was degraded in 60min.
Journal ArticleDOI
Lattice Engineering to Simultaneously Control the Defect/Stacking Structures of Layered Double Hydroxide Nanosheets to Optimize Their Energy Functionalities.
Najin Kim,Tae Ha Gu,Dongyup Shin,Xiaoyan Jin,Hyeyoung Shin,Min Gyu Kim,Hyungjun Kim,Seong Ju Hwang +7 more
TL;DR: An effective lattice engineering method to simultaneously control the defect structure and the porosity of layered double hydroxides (LDHs) was developed by adjusting the elastic deformation and chemical interactions of the nanosheets during the restacking process as mentioned in this paper.
Journal ArticleDOI
Glycine-assisted hydrothermal synthesis of nanostructured Co x Ni 1−x –Al layered triple hydroxides as electrode materials for high-performance supercapacitors
TL;DR: In this paper, a facile hydrothermal method using glycine as a chelating agent was used to synthesize Nanostructured triple hydroxides with 3:2 molar ratio and a maximum specific capacitance of 1,375 F 1 g−1 at a current density of 0.5 A g− 1 and a good high rate capability.
Journal ArticleDOI
Alignment of layered double hydroxide platelets
Yan Zhang,Julian R.G. Evans +1 more
TL;DR: In this paper, a new generation of ordered, mineral-reinforced polymer nanocomposites is emerging for which assembly of platelets into planar-random array provides the reinforcement structure.
Journal ArticleDOI
Phosphorus-containing organic-inorganic hybrid nanoparticles for the smoke suppression and flame retardancy of thermoplastic polyurethane
TL;DR: In this article, a novel organic-inorganic hybrid nanoparticles named phosphoryl polyethyleneimine amide-layered double hydroxide (PPEIA-LDH) were prepared via a simple reaction process.
References
More filters
Journal ArticleDOI
Hydrotalcite-type anionic clays: Preparation, properties and applications.
Journal ArticleDOI
Room-Temperature Ferromagnetism in Transparent Transition Metal-Doped Titanium Dioxide
Yuji Matsumoto,Makoto Murakami,T. Shono,Tetsuya Hasegawa,Tomoteru Fukumura,Masashi Kawasaki,Parhat Ahmet,Toyohiro Chikyow,Shin-ya Koshihara,Hideomi Koinuma +9 more
TL;DR: The observation of transparent ferromagnetism in cobalt-doped anatase thin films with the concentration of cobalt between 0 and 8% is reported, indicating the existence of ferromagnetic long-range ordering.
Journal ArticleDOI
Magnetic and electric properties of transition-metal-doped ZnO films
TL;DR: In this article, a 3d transition metal-doped ZnO films (n-type Zn1−xMxO) were formed on sapphire substrates using a pulsed-laser deposition technique, and their magnetic and electric properties were examined.
Journal ArticleDOI
Anion-exchange properties of hydrotalcite-like compounds
TL;DR: Ion exchange isotherms between hydrotalcite-like (HT) ions were determined and the spacing and width of the 003 reflection were measured as a function of HT composition as mentioned in this paper.
Related Papers (5)
Recent advances in the synthesis and application of layered double hydroxide (LDH) nanosheets.
Qiang Wang,Dermot O'Hare +1 more