Aminoclay: a functional layered material with multifaceted applications

Abstract

Layered silicates provide an interesting avenue to novel materials. There has been a growing interest in recent years for the development of functional materials using tailor made clays. This review highlights one such tailor made, water dispersible aminopropyl functionalized magnesium phyllosilicate (aminoclay) of the type R 8 Si 8 Mg 6 O 16 (OH) 4 , (where R ¼ -CH 2 CH 2 NH 2 ) and its multiple applications in catalysis, biology, fuel cells and light-harvesting hybrids.

Catalytic activity of Ni complexed aminoclay towards the reduction of Cr(V), p-nitrophenol and fluorescein dye

“…This declares that the above synthesized AC is a semicrystalline material. In 2007, Datta et al (2013) clearly explained the XRD peaks of AC and its metal nanoparticle composite materials. The XRD was recorded after the complexation with Ni 2?…”

Amine functionalised nanoclay incorporated hydroxypropyl methyl cellulose nanocomposites: synthesis and characterisation

“…In the presence of water, the amino groups will undergo protonation and makes the clay layers to exfoliate easily due to repulsion. Each delaminated individual clay layer will be 30 -150 nm in size and 2-4 nm in thickness, depending on the extent of layer stacking [14]. In this study, authors reported the use of amine functionalised clay to prepare HPMC nanocomposites with better properties.…”

A simple and green strategy for preparing luminescent Tb 3+ complex-based nanocomposite with stable luminescence in water

“…Aminoclay (AC) and the Tb 3+ complexes (Tb(Sal)3·2H2O, Eu(Sal)3·2H2O, Tb(Asp)3·2H2O and Tb(Bmb)3·2H2O) were prepared through the literature method. [19,23] 2.2 Preparation of Tb(Sal)@AC 0.2312 g (0.2 mmol) AC was dissolved in 2 mL double distilled water, then 0.0276 g (0.2 mmol) Sal was added and a light-yellow hydrogel (named as Sal@AC) was formed after sonication for several minutes. The luminescent Tb(Sal)@AC hydrogel was obtained by adding 667 μL 0.1 mol·L -1 TbCl3·6H2O aqueous solution into Sal@AC hydrogel followed by sonication for several minutes and drying in air at 50 ℃ for several hours, and the powder of which can be obtained after dehydration in air at 80 ℃ for 24 hours.…”

“…We recently reported a novel method to prepare luminescent LnNCs by simply mixing deprotonated aromatic carboxylic acid, Ln 3+ ions, and aminoclay (AC, a layered magnesium phyllosilicate [19,20]) in aqueous solution [21,22]. The negatively charged carboxylate groups are expected to interact electrostatically with the positively charged AC units and can coordinate with Ln 3+ (Ln=Eu and/or Tb) in aqueous solution, resulting in hydrophilic noncovalent hybrid composites with tunable emission colors.…”