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
g-C3N4 nanosheet@CoAl-layered double hydroxide composites for electrochemical energy storage in supercapacitors
Soheila Sanati,Zolfaghar Rezvani +1 more
TL;DR: In this paper, the authors reported the high capacitance and cyclic stability of CoAl-layered double hydroxide (CoAl-LDH) nanoflowers decorated with graphitic C3N4 nanosheets as a new electrode material for supercapacitor applications.
Journal ArticleDOI
Self-assembly of layered double hydroxide nanosheets/Au nanoparticles ultrathin films for enzyme-free electrocatalysis of glucose
Jingwen Zhao,Xianggui Kong,Wenying Shi,Mingfei Shao,Jingbin Han,Min Wei,David G. Evans,Xue Duan +7 more
TL;DR: In this article, the fabrication of layered double hydroxide nanosheets and Au nanoparticles (AuNPs) ultrathin films (UTFs) via the layer-by-layer (LBL) assembly technique was demonstrated.
Journal ArticleDOI
Large continuous, transparent and oriented self-supporting films of layered double hydroxides with tunable chemical composition
TL;DR: Highly ordered transparent self-supporting films of layered double hydroxides (LDHs) with a size of the order of cm2 have been obtained by a simple method.
Journal ArticleDOI
Biodegradable 2D Fe-Al Hydroxide for Nanocatalytic Tumor-Dynamic Therapy with Tumor Specificity.
Zhenbang Cao,Liang Zhang,Kang Liang,Soshan Cheong,Cyrille Boyer,J. Justin Gooding,Yu Chen,Zi Gu +7 more
TL;DR: This work provides the first paradigm of biodegradable 2D nanocatalytic platform with concurrently high catalytic‐therapeutic performance and biosafety for efficient tumor‐specific treatment and render a high degree of safety to the organism.
Journal ArticleDOI
Preparation of nanostructured microspheres of Zn–Mg–Al layered double hydroxides with high adsorption property
Yun-Min Zheng,Na Li,Wei-De Zhang +2 more
TL;DR: In this article, hierarchical nano/micro-structured Zn-Mg-Al layered double hydroxides (ZnMgAl-LDHs) were successfully synthesized by a one-step urea-method.
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