Search results for "layered compounds"

showing 3 items of 3 documents

Self-Assembly of 1D/2D Hybrid Nanostructures Consisting of a Cd(II) Coordination Polymer and NiAl-Layered Double Hydroxides

2015

The preparation and characterization of a novel hybrid material based on the combination of a 2D-layered double hydroxide (LDH) nanosheets and a 1D-coordination polymer (1D-CP) has been achieved through a simple mixture of suspensions of both building blocks via an exfoliation/restacking approach. The hybrid material has been thoroughly characterized demonstrating that the 1D-CP moieties are intercalated as well as adsorbed on the surface of the LDH, giving rise to a layered assembly with the coexistence of the functionalities of their initial constituents. This hybrid represents the first example of the assembly of 1D/2D nanomaterials combining LDH with CP and opens the door for a plethora…

Materials sciencePolymers and PlasticsCoordination polymerLayered double hydroxidesOrganic chemistryNanotechnology02 engineering and technologyengineering.material010402 general chemistry01 natural sciencesArticleNanomaterialslcsh:QD241-441chemistry.chemical_compoundQD241-441lcsh:Organic chemistryMagnetic propertieshybrid materialslayered compoundshybrid materials; layered double hydroxides; coordination polymers; magnetic properties; layered compoundsLayered double hydroxidesGeneral ChemistryQuímica021001 nanoscience & nanotechnologylayered double hydroxidesExfoliation joint0104 chemical sciences3. Good healthCoordination polymerscoordination polymersLayered compoundschemistryHybrid systemengineeringHydroxideSelf-assemblyHybrid materialsmagnetic properties0210 nano-technologyHybrid materialPolymers
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Structural Characterisation of Complex Layered Double Hydroxides and TGA-GC-MS Study on Thermal Response and Carbonate Contamination in Nitrate- and …

2015

Layered double hydroxides (LDHs) are versatile materials used for intercalating bioactive molecules in the fields of pharmaceuticals, nutraceuticals and cosmetics, with the purpose of protecting them from degradation, enhancing their water solubility to increase bioavailability and improving their pharmacokinetic properties and formulation stability. Moreover, LDHs are used in various technological applications to improve stability and processability. The crystal chemistry of hydrotalcite-like compounds was investigated by X-ray powder diffraction (XRPD), automated electron diffraction tomography (ADT) and thermogravimetric analysis (TGA)-GC-MS to shed light on the mechanisms involved in io…

Thermogravimetric analysishydrotalcytethermal responseInorganic chemistryIntercalation (chemistry)intercationsion exchangeengineering.materialCatalysischemistry.chemical_compoundCrystallinityAdsorptionlayered compoundsOrganic chemistryTGAHydrotalciteIon exchangeChemistryOrganic Chemistryelectron diffraction; intercations; ion exchange; layered compounds; structure elucidationstructure elucidationLayered double hydroxidesstructural characterization hydrotalcyte TGA GC-MS thermal response X-ray powderGeneral ChemistryX-ray powderstructural characterizationengineeringCarbonateelectron diffractionGC-MS
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SrP3N5O: a highly condensed layer phosphate structure solved from a nanocrystal by automated electron diffraction tomography.

2011

The oxonitridophosphate SrP(3)N(5)O has been synthesized by heating a multicomponent reactant mixture that consisted of phosphoryl triamide OP(NH(2))(3), thiophosphoryl triamide SP(NH(2))(3), SrS, and NH(4)Cl enclosed in evacuated and sealed silica-glass ampoules up to 750 °C. The compound was obtained as nanocrystalline powder with needle-shaped crystallites. The crystal structure was solved ab initio on the basis of electron diffraction data by means of automated electron diffraction tomography (ADT) and verified by Rietveld refinement with X-ray powder diffraction data. SrP(3)N(5)O crystallizes in the orthorhombic space group Pnma (no. 62) with unit-cell data of a=18.331(2), b=8.086(1), …

phosphatesRietveld refinementChemistryOrganic ChemistryAb initioGeneral ChemistryCrystal structureelectron diffraction; layered compounds; oxonitrides; phosphates; strontiumoxonitridesCatalysisNMR spectra databaseCrystallographyElectron diffractionlayered compoundselectron diffractionOrthorhombic crystal systemCrystallitestrontiumPowder diffractionChemistry (Weinheim an der Bergstrasse, Germany)
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